FACTOID # 83: More than half of Indonesia's primary school teachers are under 30years of age .
 
 Home   Encyclopedia   Statistics   Countries A-Z   Flags   Maps   Education   Forum   FAQ   About 
 
 
 
WHAT'S NEW
RECENT ARTICLES
More Recent Articles »
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > E942
Nitrous oxide
Nitrous oxide - space-filling model

Nitrous oxide's bond lengths and bond orders
Nitrous oxide's canonical forms
Image File history File links Download high-resolution version (1100x807, 150 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Nitrous oxide Nitrogen oxide ... Image File history File links Download high-resolution version (1100x454, 46 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Nitrous oxide Talk:Nitrous oxide ... Image File history File links Download high-resolution version (1100x205, 12 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Nitrous oxide Talk:Nitrous oxide ...

General
Molecular formula N2O
Molar mass 44.0128 g/mol
Appearance colourless gas
CAS number [10024-97-2]
Properties
Density and phase 1222.8 kg m−3 (liquid)
Solubility in water
Melting point −90.86 °C (182.29 K)
Boiling point −88.48 °C (184.67 K)
Structure
Molecular shape linear
Dipole moment 0.166 D
Thermodynamic data
Std enthalpy of
formation
ΔfHo298
+82.05 kJ/mol
Hazards
MSDS External MSDS
EU classification Oxidising (O)
NFPA 704

A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... Molar mass is the mass of one mole of a chemical element or chemical compound. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... Density (symbol: ρ - Greek: rho) is a measure of mass per volume. ... In the physical sciences, a phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i. ... It has been suggested that Solid solubility be merged into this article or section. ... Water is an odourless substance that is essential to all known forms of life and is known as the universal solvent. ... The melting point of a crystalline solid is the temperature at which it changes state from solid to liquid. ... The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid at a given pressure. ... four sp³ orbitals three sp² orbitals In chemistry, hybridisation or hybridization (see also spelling differences) is the concept of mixing atomic orbitals to form new hybrid orbitals suitable for the qualitative description of atomic bonding properties. ... // The Earths magnetic field, which is approximately a dipole. ... The debye (symbol: D) is a non-SI and non-CGS unit of electrical dipole moment. ... The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy that accompanies the formation of 1 mole of a substance in its standard state from its constituent elements in their standard states (the most stable form of the element at 1 atmosphere... A material safety data sheet or MSDS is a form containing data regarding the properties of a particular substance. ... Council Directive 67/548/EEC of 27 June 1967 on the approximation of laws, regulations and administrative provisions relating to the classification, packaging and labelling of dangerous substances (as amended) is the main source of European Union law concerning chemical safety. ... NFPA 704 is a standard maintained by the U.S. National Fire Protection Association. ... Image File history File links NFPA_704. ...

0
2
0
OX
R-phrases R8
S-phrases S38
Supplementary data page
Structure and
properties
n, εr, etc.
Thermodynamic
data
Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS
Related compounds
Related nitrogen oxides Nitric oxide
Nitrogen dioxide
Dinitrogen trioxide
Dinitrogen tetroxide
Dinitrogen pentoxide
Related compounds Nitric acid
Nitrous acid
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references

Nitrous oxide, also known as dinitrogen oxide or dinitrogen monoxide, is a chemical compound with chemical formula N2O. Under room conditions, it is a colourless non-inflammable gas, with a pleasant, slightly-sweet odor. It is used in surgery and dentistry for its anaesthetic and analgesic effects, where it is commonly known as laughing gas due to the euphoric effects of inhaling it. It is also used as an oxidizer in internal combustion engines. In this use it is known as nitrous, or NOS after a well-known brand which has become a genericized trademark. Nitrous oxide is present in the atmosphere where it acts as a powerful greenhouse gas. R-phrases are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous substances and preparations. ... S-phrases are defined in Annex IV of European Union Directive 67/548/EEC: Safety advice concerning dangerous substances and preparations. ... The refractive index (or index of refraction) of a material is the factor by which the phase velocity of electromagnetic radiation is slowed in that material, relative to its velocity in a vacuum. ... The dielectric constant εr (represented as or K in some cases) is defined as the ratio: where εs is the static permittivity of the material in question, and ε0 is the vacuum permittivity. ... Ultraviolet-Visible Spectroscopy or Ultraviolet-Visible Spectrophotometry (UV/ VIS) involves the spectroscopy of photons (spectrophotometry). ... IR spectrum of a thin film of liquid ethanol. ... Nuclear Magnetic Resonance Spectroscopy most commonly known as NMR Spectroscopy is the name given to the technique which exploits the magnetic properties of nuclei. ... Basic schematic of a mass spectrometer Mass spectrometry (also known as mass spectroscopy (deprecated)[1] or in common speech mass-spec) is an analytical technique used to measure the mass-to-charge ratio of ions. ... The term nitrogen oxide is a general term and can be used to refer to any of these oxides (oxygen compounds) of nitrogen, or to a mixture of them: Nitric oxide (NO), nitrogen(II) oxide Nitrogen dioxide (NO2) Dinitrogen monoxide (N2O) (Nitrous oxide) Dinitrogen trioxide (N2O3) Dinitrogen tetroxide (N2O4) Dinitrogen... The chemical compound nitric oxide is a gas with chemical formula NO. It is an important signaling molecule in the body of mammals including humans, one of the few gaseous signaling molecules known. ... [1] R-phrases , S-phrases , , , , , Supplementary data page Structure and properties n, εr, etc. ... The chemical compound dinitrogen trioxide (chemical formula: N2O3) is a pale blue liquid, and is unstable above 3°C (37° F) at standard pressure. ... Nitrogen tetroxide (or dinitrogen tetroxide) is the chemical compound N2O4. ... Dinitrogen pentoxide is the binary nitrogen oxide N2O5, also known as nitrogen pentoxide. ... The chemical compound nitric acid (HNO3), otherwise known as aqua fortis or spirit of nitre, is an aqueous solution of hydrogen nitrate (anhydrous nitric acid). ... Nitrous acid (molecular formula HNO2) is a weak monobasic acid known only in solution and in the form of nitrite salts. ... In chemistry, the standard state of a material is its state at 1 bar (100 kilopascals) and 25 degrees Celsius (298. ... A chemical compound is a chemical substance consisting of two or more different chemically bonded chemical elements, with a fixed ratio determining the composition. ... A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless Atomic mass 14. ... General Name, Symbol, Number oxygen, O, 8 Chemical series Nonmetals, chalcogens Group, Period, Block 16, 2, p Appearance colorless (gas) very pale blue (liquid) Atomic mass 15. ... A symbol for flammable chemicals Flammability is the ease with which a substance will ignite, causing fire or combustion. ... A gas is one of the four major phases of matter (after solid and liquid, and followed by plasma, that subsequently appear as a solid material is subjected to increasingly higher temperatures. ... A cardiothoracic surgeon performs a mitral valve replacement at the Fitzsimons Army Medical Center. ... A Dentist and Dental Assistant perform surgery on a patient. ... Anesthesia (AE), also anaesthesia (BE), is the process of blocking the perception of pain and other sensations. ... An analgesic (colloquially known as a painkiller) is any member of the diverse group of drugs used to relieve pain (achieve analgesia). ... An oxidizing agent is a substance that oxidizes another substance in electrochemistry or redox chemical reactions in general. ... A Nissan 240SX equipped with nitrous oxide injection purges the nitrous oxide supply line before making a dragstrip pass Nitrous is a slang term for nitrous oxide (N2O), commonly used by drag racing classes like Pro Street, Top Sportsman, and Pro Mod. ... A genericized trademark (Commonwealth English genericised trade mark), sometimes known as a generic trade mark, generic descriptor or proprietary eponym, is a trademark or brand name which is often used as the colloquial description for a particular type of product or service as a result of widespread popular or cultural... Layers of Atmosphere (NOAA) Air redirects here. ... Top: Increasing atmospheric CO2 levels as measured in the atmosphere and ice cores. ...

Contents

Chemistry

The structure of the nitrous oxide molecule is a linear chain of a nitrogen atom bound to a second nitrogen atom, which in turn is bound to an oxygen atom. It can be considered a resonance hybrid of N≡N+−O and N=N+=O. In chemistry, a molecule is an aggregate of two or more atoms in a definite arrangement held together by chemical bonds [1] [2] [3] [4] [5]. Chemical substances are not infinitely divisible into smaller fractions of the same substance: a molecule is generally considered the smallest particle of a pure... Resonance structures of Benzene Resonance structures are diagrammatic tools used predominately in organic chemistry to symbolize resonant bonds between atoms in molecules. ...


Nitrous oxide, N2O, should not be confused with the other oxides of nitrogen such as nitric oxide NO and nitrogen dioxide NO2. The chemical compound nitric oxide is a gas with chemical formula NO. It is an important signaling molecule in the body of mammals including humans, one of the few gaseous signaling molecules known. ... [1] R-phrases , S-phrases , , , , , Supplementary data page Structure and properties n, εr, etc. ...


Nitrous oxide is isoelectronic with carbon dioxide. Two or more molecular entities (atoms, molecules, ions) are described as isoelectronic if they have the same number of valence electrons and the same structure (number and connectivity of atoms), but may differ in the elements involved. ... Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms. ...


It can be prepared by heating ammonium nitrate in the laboratory and can be used to produce nitrites by mixing it with boiling alkali metals, and to oxidize organic compounds at high temperatures. This article or section does not cite its references or sources. ... // Definition The nitrite ion is NO2−. A nitrite compound is one that contains this group, either an ionic compound, or an analogous covalent one. ... The alkali metals are the series of elements in Group 1 (IUPAC style) of the periodic table (excluding hydrogen in all but one rare circumstance): lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr). ... Benzene An organic compound is any member of a large class of chemical compounds whose molecules contain carbon, with the exception of carbides, carbonates, carbon oxides and elementary carbon. ...


The CAS number of nitrous oxide is 10024-97-2 and its UN number is 1070. CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences and alloys. ... UN numbers or UN IDs are four-digit numbers that identify hazardous substances and products (such as explosives and poisonous materials) of commercial importance. ...


History

The gas was discovered by Joseph Priestley in 1772, who called it phlogisticated nitrous air (see phlogiston). Humphry Davy in the 1790s tested the gas on himself and some of his friends, including the poets Samuel Taylor Coleridge and Robert Southey. They soon realised that nitrous oxide considerably dulled the sensation of pain, even if the inhaler were still semi-conscious. And so it came into use as an anaesthetic, particularly by dentists, who do not typically have access to the services of an anesthesiologist and who may benefit from a patient who can respond to verbal commands. Joseph Frederick Priestley is often credited for the discovery of oxygen. ... The phlogiston theory is a now discredited 17th century hypothesis regarding combustion. ... Sir Humphry Davy. ... Samuel Taylor Coleridge, English poet, 1795 Samuel Taylor Coleridge (October 21, 1772 – July 25, 1834) (pronounced ) was an English poet, critic, and philosopher who was, along with his friend William Wordsworth, one of the founders of the Romantic Movement in England and one of the Lake Poets. ... Robert Southey, English poet Robert Southey (August 12, 1774 – March 21, 1843) was an English poet of the Romantic school, one of the so-called Lake Poets, and Poet Laureate. ... An anesthesiologist (American English), or anaesthetist (British English), is a medical doctor trained to administer anesthesia. ...


Manufacture

Nitrous oxide is most commonly made by fusing and "boiling" ammonium nitrate to form steam, nitrous oxide, nitrogen, ammonium nitrate 'fog' and small amounts of very toxic higher oxides of nitrogen; (NO2, NO, etc): This article or section does not cite its references or sources. ...

NH4NO3 → N2O + 2H2O, ΔH = −36.8 kJ:

The addition of various phosphates favors formation of a purer gas. This reaction occurs at around 240 °C, a temperature where ammonium nitrate is a moderately sensitive explosive and a very powerful oxidizer (perhaps on the order of fuming nitric acid). At temperatures much above 240 °C the exothermic reaction may run away, perhaps up to the point of detonation. The mixture must be cooled to avoid such a disaster. In practice, the reaction involves a series of tedious adjustments to control the temperature to within a narrow range, which it will not naturally tend to stay in. Professionals have destroyed whole neighborhoods by losing control of such commercial processes. Examples include the Ohio Chemical debacle in Montreal, 1966 and the Air Products & Chemicals, Inc. disaster in Delaware City, Delaware, 1977. Above is a ball-and-stick model of the inorganic hydrogenphosphate anion (HPO42−). Colour coding: P (orange); O (red); H (white). ... The degree Celsius (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701–1744), who first proposed a similar system in 1742. ... This article is concerned solely with chemical explosives. ... An oxidizing agent is a substance that oxidizes another substance in electrochemistry or redox chemical reactions in general. ... The chemical compound nitric acid (HNO3), otherwise known as aqua fortis or spirit of nitre, is an aqueous solution of hydrogen nitrate (anhydrous nitric acid). ... In chemistry, an exothermic reaction is one that releases heat. ... A weapons cache is detonated at the East River Range on Bagram Airfield, Afghanistan Detonation is a process of supersonic combustion that involves a shock wave and a reaction zone behind it. ... Downton from Mount Royal, winter Motto: Concordia Salus Coordinates: Country Canada Province Quebec Founded 1642 Established 1832 City Mayor Gérald Tremblay Area    - City 366. ... Delaware City is a city in New Castle County, Delaware, United States. ...


The direct oxidation of ammonia may someday rival the ammonium nitrate pyrolysis synthesis of nitrous oxide mentioned above. This capital-intensive process, which originates in Japan, uses a manganese dioxide-bismuth oxide catalyst. (Suwa et al. 1961; Showa Denka Ltd.) Ammonia is a compound of nitrogen and hydrogen with the formula NH3. ... Simple sketch of pyrolysis chemistry Pyrolysis usually means the chemical decomposition of organic materials by heating in the absence of oxygen or any other reagents, except possibly steam. ... Manganese(IV) oxide (MnO2) is a chemical compound also known as manganese dioxide or manganese oxide. ... Bismite is a bismuth oxide mineral, Bi2O3. ...

2NH3 + 2O2 → N2O + 3H2O:

Higher oxides of nitrogen are formed as impurities. Note that uncatalyzed ammonia oxidation (i.e. combustion or explosion) goes primarily to N2 and H2O. The Ostwald process oxidizes ammonia to nitric oxide (NO), using platinum; this is the beginning of the modern synthesis of nitric acid from ammonia (see above). In chemistry and biology, catalysis is the acceleration (increase in rate) of a chemical reaction by means of a substance, called a catalyst, that is itself not consumed by the overall reaction. ... The Ostwald process is chemical process for producing nitric acid, which was developed by Wilhelm Ostwald (patented 1902). ... The chemical compound nitric oxide is a gas with chemical formula NO. It is an important signaling molecule in the body of mammals including humans, one of the few gaseous signaling molecules known. ... General Name, Symbol, Number platinum, Pt, 78 Chemical series transition metals Group, Period, Block 10, 6, d Appearance grayish white Atomic mass 195. ...


Nitrous oxide can be made by heating a solution of sulfamic acids and nitric acids. A lot of gas was made this way in Bulgaria (Brozadzhiew & Rettos, 1975). Sulfamic acid, also known as amidosulfonic acid amidosulfuric acid, aminosulfonic acid, and sulfamidic acid, is a molecular compound with the formula H3NSO3. ... The chemical compound nitric acid (HNO3), otherwise known as aqua fortis or spirit of nitre, is an aqueous solution of hydrogen nitrate (anhydrous nitric acid). ...

HNO3 + NH2SO3H → N2O + H2SO4 + H2O:

There is no explosive hazard in this reaction if the mixing rate is controlled. However, as usual, toxic higher oxides of nitrogen form.


Colorless solutions of hydroxylamine hydrochloride and sodium nitrite can also be used to produce N2O. Hydroxylamine is a reactive chemical with formula NH2OH. It can be considered a hybrid of ammonia and water due to parallels it shares with each. ... Sodium nitrite, with chemical formula NaNO2, is used as a color fixative and preservative in meats and fish. ...

(NH3OH+Cl-) + NaNO2 → N2O + NaCl + H2O:

If the nitrite is added to the hydroxylamine solution, the gas produced is pure enough for inhalation, and the only remaining byproduct is salt water. However, if the hydroxylamine solution is added to the nitrite solution (nitrite is in excess), then toxic higher oxides of nitrogen form are produced.


Uses

Inhalant effects — laughing gas

8g canister of nitrous oxide
Enlarge
8g canister of nitrous oxide

Nitrous oxide (N2O) is a dissociative that can cause analgesia, euphoria, dizziness, flanging of sound, and, in some cases, slight hallucinations and mild aphrodisiac effect. 8g canister of nitrous oxide Nitrous oxide (N2O) is a dissociative that can cause analgesia, euphoria, dizziness, flanging of sound, and, in some cases, slight hallucinations including dissociation, and mild aphrodisiac effect. ... Image File history File links Download high-resolution version (1782x1719, 569 KB)[edit] Summary (Turkeyphant) [edit] Licensing I, the creator of this work, hereby grant the permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1. ... Image File history File links Download high-resolution version (1782x1719, 569 KB)[edit] Summary (Turkeyphant) [edit] Licensing I, the creator of this work, hereby grant the permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1. ... Dissociative drugs are a class of psychedelic drugs characterized by intense feelings of depersonalization, derealization, and analgesia. ... For other uses of painkiller, see painkiller (disambiguation) An analgesic (colloquially known as painkiller) is any member of the diverse group of drugs used to relieve pain. ... Look up euphoria in Wiktionary, the free dictionary. ... Flanging is a time-based audio effect that occurs when two identical signals are mixed together, but with one signal time-delayed by a small and gradually changing amount, usually smaller than 20 ms (milliseconds). ... An aphrodisiac is an agent which acts on the mind and causes the arousal of the mood of sexual desire. ...


Aerosol propellant

The gas is licensed for use as a food additive (also known as E942), specifically as an aerosol spray propellant. Its most common uses in this context are in aerosol whipped cream canisters and as an inert gas used to displace staleness-inducing oxygen when filling packages of potato chips and other similar snack foods. Food additives are substances added to food to preserve flavour or improve its taste and appearance. ... Aerosol spray can Aerosol spray is the name given to a type of canister containing liquid under pressure from pressurized vapor in equilibrium with another liquid, which often also dissolves the payload (see propellant below). ... Cream is a dairy product that is composed of the higher-fat layer skimmed from the top of raw milk before homogenization. ... Saratoga chips Potato chips (British English or Hiberno-English: crisps) are slim slices of potatoes deep fried or baked until crisp. ...


The gas is extremely soluble in fatty compounds. In aerosol whipped cream, it is dissolved in the fatty cream until it leaves the can, when it becomes gaseous and thus creates foam. Used in this way, it produces whipped cream four times the volume of the liquid, whereas whipping air into cream only produces twice the volume. If air were used as a propellant, under increased pressure the oxygen would accelerate rancidification of the butterfat, while nitrous oxide inhibits such degradation. Rancidification is the decomposition of fats and other lipids by hydrolysis and/or oxidation. ...


Rocket motors

Nitrous oxide can be used as an oxidizer in a rocket engine. This has the advantages over other oxidizers that it is non-toxic and, due to its stability at room temperature, easy to store and relatively safe to carry on a flight. European Union Chemical hazard symbol for oxidizing agents Dangerous goods label for oxidising agents An oxidizing agent is a compound that oxidizes another substance in electrochemistry or redox chemical reactions. ... A Redstone rocket, part of the Mercury program The traditional definition of a rocket is a vehicle, missile or aircraft which obtains thrust by the reaction to the ejection of fast moving fluid from within a rocket engine. ...


Nitrous oxide has been the oxidizer of choice in several hybrid rocket designs (using solid fuel with a liquid or gaseous oxidizer). The combination of nitrous oxide with hydroxyl-terminated polybutadiene fuel has been used by SpaceShipOne and others. It is also notably used in amateur and high power rocketry with various plastics as the fuel. An episode of MythBusters featured a hybrid rocket built using a paraffin/powdered carbon mixture (and later salami) as its solid fuel and nitrous oxide as its oxidizer. A hybrid rocket propulsion system is a rocket engine composed of a solid propellant lining a combustion chamber into which a liquid or gaseous propellant is injected so as to undergo a strong exothermic reaction to produce hot gas that is emitted through a De Laval nozzle for propulsive purposes. ... Hydroxyl-terminated polybutadiene (HTPB) is a polymer of butadiene terminated at each end with a hydroxyl functional group. ... SpaceShipOne is small, having a three-person cabin and short but wide wings. ... A model rocket. ... High power rocketry is a hobby similar to model rocketry, with the major difference that the rockets flown are significantly larger. ... Household items made out of plastic. ... MythBusters is an American pop science television program on the Discovery Channel starring special effects experts Adam Savage and Jamie Hyneman, who use their skills and expertise to test the validity of various rumors and urban legends in popular culture. ... Paraffin is a common name for a group of alkane hydrocarbons with the general formula CnH2n+2, where n is greater than about 20, discovered by Carl Reichenbach. ... This article or section does not cite its references or sources. ...


Nitrous oxide can also be used in a monopropellant rocket. In the presence of a heated catalyst, N2O will decompose exothermically into nitrogen and oxygen, at a temperature of approximately 1300° Celsius. In a vacuum thruster, this can provide a monopropellant specific impulse (Isp) of as much as 180s. While noticeably less than the Isp available from hydrazine thrusters (monopropellant or bipropellant with nitrogen tetroxide), the decreased toxicity makes nitrous oxide an option worth investigating. A monopropellant rocket (or monoprop rocket) is a rocket that uses a single chemical as its power source and propellant. ... It has been suggested that this article or section be merged into Catalysis. ... Celsius is, or relates to, the Celsius temperature scale. ... The specific impulse (commonly abbreviated Isp) of a propulsion system is the impulse (change in momentum) per unit mass of propellant. ... Hydrazine is the chemical compound with formula N2H4. ... F-1 rocket engine (The kind used by the Saturn V.) A bipropellant rocket engine is a rocket engine that uses two fluid propellants stored in separate tanks that are injected into, and undergo a strong exothermic reaction, in a rockets combustion chamber. ... Nitrogen tetroxide (or dinitrogen tetroxide) is the chemical compound N2O4. ...


Internal combustion engine

Main article: Nitrous

In racing, nitrous oxide (often just "nitrous" in this context) is sometimes injected into the intake manifold (or prior to the intake manifold; some systems directly inject it into the cylinder) to increase power: even though the gas itself is not flammable, it delivers more oxygen than atmospheric air by breaking down at elevated temperatures, thus allowing the engine to burn more fuel and air. Additionally, since nitrous oxide is stored as a liquid, the evaporation of liquid nitrous oxide in the intake manifold causes a large drop in intake charge temperature. This results in a denser charge, and can reduce detonation, as well as increase power available to the engine. A Nissan 240SX equipped with nitrous oxide injection purges the nitrous oxide supply line before making a dragstrip pass Nitrous is a slang term for nitrous oxide (N2O), commonly used by drag racing classes like Pro Street, Top Sportsman, and Pro Mod. ... A race is a competition of speed. ... General Name, Symbol, Number oxygen, O, 8 Chemical series Nonmetals, chalcogens Group, Period, Block 16, 2, p Appearance colorless (gas) very pale blue (liquid) Atomic mass 15. ... The heat of vaporization is a physical property of substances. ... In automotive engineering, an intake manifold or inlet manifold is a part of an engine that supplies the fuel/air mixture to the cylinders. ... It has been suggested that this article or section be merged into Engine knocking. ...


The same technique was used during World War II by Luftwaffe aircraft with the GM 1 system to boost the power output of aircraft engines. Originally meant to provide the Luftwaffe standard aircraft with superior high-altitude performance, technological considerations limited its use to extremely high altitudes. Accordingly, it was only used by specialized planes like high-altitude reconnaissance aircraft, high-speed bombers and high-altitude interceptors. Combatants Major Allied powers: United Kingdom Soviet Union United States Republic of China and others Major Axis powers: Nazi Germany Italy Japan and others Commanders Winston Churchill Joseph Stalin Franklin Roosevelt Harry Truman Chiang Kai-Shek Adolf Hitler Benito Mussolini Hideki Tojo Casualties Military dead: 17,000,000 Civilian dead... This article does not cite its references or sources. ... GM-1 was a system for injecting nitrous oxide into aircraft engines that was used by the Luftwaffe in World War II to boost the high-altitude performance of their aircraft. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... A military aircraft used for monitoring enemy activity, usually carrying no armament. ... A Schnellbomber (German, literally fast bomber) was a specialized high-speed bomber aircraft. ... The MiG-25 is a Russian interceptor that was the mainstay of the Soviet air defence. ...


One of the major problems of using nitrous oxide in a reciprocating engine is that it can produce enough power to destroy the engine. Power increases of 100–300% are possible, and unless the mechanical structure of the engine is reinforced, the engine may not survive this kind of operation.


It is very important with nitrous oxide augmentation of internal combustion engines to maintain temperatures and fuel levels so as to prevent preignition, or detonation (sometimes referred to as knocking or pinging). A colorized automobile engine The internal combustion engine is a heat engine in which the burning of a fuel occurs in a confined space called a combustion chamber. ... It has been suggested that this article or section be merged into Engine knocking. ... It has been suggested that Detonation internal combustion engine be merged into this article or section. ...


Safety

The major safety hazards of nitrous oxide come from the fact that it is a compressed liquified gas, and a dissociative anaesthetic. Dissociative drugs are a class of psychedelic drugs characterized by intense feelings of depersonalization, derealization, and analgesia. ... Anesthesia (AE), also anaesthesia (BE), is the process of blocking the perception of pain and other sensations. ...


While normally inert in storage and fairly safe to handle, nitrous oxide can decompose energetically and potentially detonate if initiated under the wrong circumstances. Liquid nitrous oxide acts as a good solvent for many organic compounds; liquid mixtures can form somewhat sensitive explosives. Contamination with fuels has been implicated in a handful of rocketry accidents, where small quantities of nitrous / fuel mixtures detonated, triggering the explosive decomposition of residual nitrous oxide in plumbing. Decomposition is the reduction of bodies and other formerly living organisms into simpler forms of matter; and most particularly to the fate of the body, after death. ... Detonation is a process of supersonic combustion that involves a shock wave and a reaction zone behind it. ... An organic compound is any of a large class of chemical compounds whose molecules contain carbon, with exception of carbides, carbonates and carbon oxides. ...


Nitrous oxide in an atmosphere

Greenhouse gas trends.
Greenhouse gas trends.

Unlike the other Nitrogen oxides, nitrous oxide is a major greenhouse gas; per unit of weight, nitrous oxide has 296 times the effect of carbon dioxide (CO2) for producing global warming [1]. Nitrous oxide is thus part of efforts to curb greenhouse gas emissions, such as the Kyoto Protocol. Behind carbon dioxide and methane, which has 23 times the greenhouse warming potential of carbon dioxide (over 100 years), nitrous oxide is the third most important gas that contributes to global warming. (The other nitrogen oxides contribute to global warming indirectly, by contributing to tropospheric ozone production during smog formation). Global trends in major greenhouse gases. ... Global trends in major greenhouse gases. ... The term nitrogen oxide is a general term and can be used to refer to any of these oxides (oxygen compounds) of nitrogen, or to a mixture of them: Nitric oxide (NO), nitrogen(II) oxide Nitrogen dioxide (NO2) Dinitrogen monoxide (N2O) (Nitrous oxide) Dinitrogen trioxide (N2O3) Dinitrogen tetroxide (N2O4) Dinitrogen... Top: Increasing atmospheric CO2 levels as measured in the atmosphere and ice cores. ... Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms. ... Global mean surface temperatures 1856 to 2005 Mean surface temperature anomalies during the period 1995 to 2004 with respect to the average temperatures from 1940 to 1980 Global warming is the observed increase in the average temperature of the Earths atmosphere and oceans in recent decades. ... Kyoto Protocol Opened for signature December 11, 1997 in Kyoto, Japan Entered into force February 16, 2005. ... Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms. ... Methane is a significant and plentiful fuel which is the principal component of natural gas. ...


Nitrous oxide also attacks ozone in the stratosphere, aggravating the excess amount of UV striking the earth's surface in recent decades (various freons and related halogenated organics also consume ozone in the stratosphere). In the pre-industrial atmosphere nitrous oxide was (and remains) the main natural regulator of stratospheric ozone. Atmosphere diagram showing stratosphere. ... The haloalkane (also known as halogenoalkanes) are a group of chemical compounds, consisting of alkanes, such as methane or ethane, with one or more halogens linked, such as chlorine or fluorine, making them a type of organic halide. ...


Nitrous oxide is naturally emitted by bacteria in soils and oceans. Agriculture is the main source of human-produced nitrous oxide: cultivating soil, the use of nitrogen fertilizers, and animal waste handling can all stimulate naturally occurring bacteria to produce more nitrous oxide. Industrial sources make up only about 20% of all anthropogenic sources, and include the production of nylon and nitric acid and the burning of fossil fuel in internal combustion engines. Fertilizers or fertilisers are compounds given to plants with the intention of promoting growth; they are usually applied either via the soil, for uptake by plant roots, or by foliar spraying, for uptake through leaves. ... Nylon represents a family of synthetic polymers, a thermoplastic material, first produced on February 28, 1935 by Gerard J. Berchet of Wallace Carothers research group at DuPont. ...


Human activity is thought to account for somewhat less than 2 teragrams (this is multiplied by about 300 when calculated as a ratio to carbon dioxide) of nitrogen oxides per year, nature for over 15 teragrams [2]. The global anthropogenic nitrous oxide flux is about 1 petagram of carbon dioxide carbon-equivalents per year; this compares to 2 petagrams of methane carbon dioxide carbon-equivalents per year, and to an atmospheric loading rate of about 3.3 petagrams of carbon dioxide carbon-equivalents per year. tera- (symbol: T) is a prefix in the SI system of units denoting 1012, or 1 000 000 000 000. ...


External links

  • Paul Crutzen Interview Freeview video of Paul Crutzen Nobel Laureate for his work on decomposition of ozone talking to Harry Kroto Nobel Laureate by the Vega Science Trust.
  • National Pollutant Inventory - Oxides of nitrogen fact sheet
  • Nitrous Oxide Specs Extremely thorough Nitrous Oxide Facts
  • Links to external chemical sources.


v  d  e
E numbers    
Colours (E100-199) • Preservatives (E200-299) • Antioxidants & Acidity regulators (E300-399) • Thickeners, stabilisers & emulsifiers (E400-499) • pH regulators & anti-caking agents (E500-599) • Flavour enhancers (E600-699) • Miscellaneous (E900-999) • Additional chemicals (E1100-1599)

Waxes (E900-909) • Synthetic glazes (E910-919) • Improving agents (E920-929) • Packaging gases (E930-949) • Sweeteners (E950-969) • Foaming agents (E990-999)

Argon (E938) • Helium (E939) • Dichlorodifluoromethane (E940) • Nitrogen (E941) • Nitrous oxide (E942) • Butane (E943a) • Isobutane (E943b) • Propane (E944) • Oxygen (E948) • Hydrogen (E949)


For the mathematical constant see: E (mathematical constant). ... The color of food is considered important in its enjoyment. ... A preservative is a natural or synthetic chemical that is added to products such as foods, pharmaceuticals, paints, biological samples, etc. ... This article or section is in need of attention from an expert on the subject. ... Acidity regulators, or pH control agents, are food additives added to change or maintain pH (acidity or basicity). ... Thickening agents, or thickeners, are substances which, when added to the mixture, increase its viscosity without substantially modifying its other properties, like eg. ... The tail of a Lufthansa airliner (Airbus A319) in flight, showing the horizontal stabilizer Mathematics: see Group action. ... An emulsion is a mixture of two immiscible substances. ... . The initial letter is shown capitalized due to technical restrictions. ... Anticaking agents are used in such things as table salt to keep the product from forming lumps, making it better for packaging, transport and for the consumer. ... Flavour enhancers are commonly added to commercially produced food products (eg. ... Wax has traditionally referred to a substance that is secreted by bees (beeswax) and used by them in constructing their honeycombs. ... Glazing agents, or polishing agents, are food additives providing shiny appeareance or protective coating to foods. ... Flour treatment agents (also called improving agents) are food additives added to flour in order to improve its properties. ... A packaging gas is a gas used for packaging of sensitive materials in modified atmosphere. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... A foaming agent is a material that will decompose to release a gas under certain conditions (typically high temperature), which can be used to turn a liquid into a foam. ... General Name, Symbol, Number argon, Ar, 18 Chemical series noble gases Group, Period, Block 18, 3, p Appearance colorless Atomic mass 39. ... General Name, Symbol, Number helium, He, 2 Chemical series noble gases Group, Period, Block 18, 1, s Appearance colorless Atomic mass 4. ... Disclaimer and references Dichlorodifluoromethane (R-12), usually sold under the brand name Freon-12, is a chlorofluorocarbon halomethane used as a refrigerant and aerosol spray propellant until its manufacture was discontinued in 1995, due to concerns about damage to the ozone layer. ... General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless Atomic mass 14. ... Butane, also called n-butane, is the unbranched alkane with four carbon atoms, CH3CH2CH2CH3. ... Butane is an alkane hydrocarbon with the molecular formula C4H10. ... Propane is a three-carbon alkane, normally a gas, but compressible to a liquid that is transportable. ... General Name, Symbol, Number oxygen, O, 8 Chemical series Nonmetals, chalcogens Group, Period, Block 16, 2, p Appearance colorless (gas) very pale blue (liquid) Atomic mass 15. ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ...

General anesthetics (N01A) edit
Ethers:

Diethyl ether, Vinyl ether, Desflurane, Enflurane, Isoflurane, Methoxyflurane, Sevoflurane In modern medical practice, general anaesthesia (AmE: anesthesia) is a state of total unconsciousness resulting from general anaesthetic drugs. ... Anesthesia (AE), also anaesthesia (BE), is the process of blocking the perception of pain and other sensations. ... A section of the Anatomical Therapeutic Chemical Classification System. ... Ether is the general name for a class of chemical compounds which contain an ether group — an oxygen atom connected to two (substituted) alkyl groups. ... Diethyl ether, also known as ether and ethoxyethane, is a clear, colorless, and highly flammable liquid with a low boiling point and a characteristic smell. ... Desflurane is a highly flourinated ether used for maintenance of general anaesthesia. ... Structural formula of enflurane Enflurane (2-chloro-1,1,2,-trifluoroethyl-difluomethyl ether) is a halogenated ether that was commonly used for inhalational anesthesia during the 1970s and 1980s. ... Structural formula of isoflurane Isoflurane (1-chloro-2,2,2-trifluoroethyl difluoromethyl ether) is a halogenated ether used for inhalation anesthesia. ... Methoxyflurane (C3H4Cl2F2O) is an inhalation anesthetic used in the 1960s, but withdrawn because of detrimental effects on the kidneys. ... Sevoflurane (2, 2, 2-trifluoro-1-(trifluoromethyl) ethyl ether), also called fluoromethyl, is a halogenated ether used for induction and maintenance of general anesthesia. ...

Haloalkanes:

Chloroform, Halothane, Trichloroethylene The haloalkane (also known as halogenoalkanes) are a group of chemical compounds, consisting of alkanes, such as methane or ethane, with one or more halogens linked, such as chlorine or fluorine, making them a type of organic halide. ... Chloroform, also known as trichloromethane and methyl trichloride, is a chemical compound with formula CHCl3. ... Halothane vapour is an inhalational general anaesthetic. ... The chemical compound trichloroethylene is a chlorinated hydrocarbon commonly used as an industrial solvent. ...

Barbiturates:

Hexobarbital, Methohexital, Narcobarbital, Thiopental Barbiturates are drugs that act as central nervous system (CNS) depressants, and by virtue of this they produce a wide spectrum of effects, from mild sedation to anesthesia. ... Hexobarbital is a barbituate. ... Methohexital is a short-acting intravenous anaesthetic induction agent, that is, used to commence anaesthesia. ... Sodium thiopental (also called sodium pentothal (™ of Abbott Laboratories), thiopental (or thiopentone) sodium) is a rapid-onset, short-acting barbiturate general anesthetic. ...

Opioids:

Alfentanil, Anileridine, Fentanyl, Phenoperidine, Remifentanil, Sufentanil An opioid is any agent that binds to opioid receptors, found principally in the central nervous system and gastrointestinal tract. ... Alfentanil (Alfenta) is a parenteral short-acting opioid painkiller, used for anaesthesia in surgery. ... Anileridine (Leritine®) is a synthetic opioid and strong analgesic medication. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Phenoperidine is an opiod general anesthetic. ... Remifentanil is a potent ultra short-acting synthetic opioid analgesic drug. ... Sufentanil is a drug that belongs to the class of drugs known as the opioid analgesic drugs. ...

Others:

Alfaxalone, Minaxolone, Droperidol, Esketamine, Etomidate, Hydroxybutyric acid, Ketamine, Nitrous oxide, Propanidid, Propofol, Xenon Droperidol (Dropletan®) is an antidopaminergic drug used as an antiemetic and antipsychotic. ... Etomidate is a short acting intravenous anaesthetic agent used for the induction of general anaesthesia and for sedation for short procedures such as reduction of dislocated joints and cardioversion. ... GHB redirects here. ... Ketamine is a general dissociative anaesthetic for human and veterinary use. ... Propanidid is a phenylacetate general anesthetic. ... Propofol is an intravenous anesthetic agent used for the induction of general anesthesia in adult patients and pediatric patients older than 3 years of age; maintenance of general anesthesia in adult patients and pediatric patients older than 2 months of age; and intensive care unit (ICU) sedation for intubated, mechanically... General Name, Symbol, Number xenon, Xe, 54 Chemical series noble gases Group, Period, Block 18, 5, p Appearance colorless Atomic mass 131. ...



 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Lesson Plans | Student Area | Student FAQ | Reviews | Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m