Physical 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 Chalcogens Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ... Color is an important part of the visual arts. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences and alloys. ...
Thermochemistry ... AMU redirects here, but may also refer to the Arab Maghreb Union The unified atomic mass unit (u), or dalton (Da), is a small unit of mass used to express atomic masses and molecular masses. ... The melting point of a solid is the temperature at which it changes state from solid to liquid. ... The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. ... The degree Celsius (also known as Centigrade)) (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701–1744), who first proposed a similar system in 1742. ... 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. ... The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. ... The degree Celsius (also known as Centigrade)) (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701–1744), who first proposed a similar system in 1742. ... Density (symbol: Ï - Greek: rho) is a measure of mass per unit of volume. ... The international prototype, made of platinum-iridium, which is kept at the BIPM under conditions specified by the 1st CGPM in 1889. ... The metre (Commonwealth English) or meter (American English) (symbol: m) is the SI base unit of length. ... JUNIOR Odor receptors on the antennae of a Luna moth An odor (American English) or odour (Commonwealth English) is the object of perception of the sense of olfaction. ...
Safety 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... The joule (symbol: J) is the SI unit of energy, or work. ... The mole and its simple conversions into different units of measurements. ... 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... In chemistry, the standard molar entropy is the entropy content of one mole of substance, under conditions of standard temperature and pressure. ... The joule (symbol: J) is the SI unit of energy, or work. ... The mole and its simple conversions into different units of measurements. ... The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. ...
Ingestion
Hazardous due to decomposition to toxic gases
Inhalation
Hazardous due to decomposition to toxic gases
Skin
May burn and stain skin yellow due to decomposition to NO2
Disclaimer and references This page refers to the data given in chemical compound property tables. ...
The chemical compounddinitrogen trioxide (chemical formula: N2O3) is a pale blue liquid, and is unstable above 3°C (37° F) at standard pressure. It melts at -102°C (-152°F) and boils/decomposes at 3°C (37°F). The liquid at 2°C has the density 1.4 g/cm3. A chemical compound is a chemical substance formed from two or more 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. ... A liquid will assume the shape of its container. ... The degree Celsius (also known as Centigrade)) (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701–1744), who first proposed a similar system in 1742. ... Fahrenheit is a temperature scale named after the German physicist Gabriel Fahrenheit (1686–1736), who proposed it in 1724. ... Temperature and air pressure can vary from one place to another on the Earth, and can also vary in the same place with time. ... The gram or gramme, symbol g, is a unit of mass. ... A cubic centimetre (cm3) is an SI derived unit of volume, equal to the volume of a cube with side length of 1 centi metre. ...
Dinitrogen trioxide is produced by mixing equal parts of nitric oxide (NO) and nitrogen dioxide (NO2), and cooling the mixture below -21°C (-6°F). The gases react, forming the blue liquid N2O3. Dinitrogen trioxide is only stable in the liquid and solid phases, and decomposes back to NO and NO2 when heated above 3°C. 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. ... The chemical compound nitrogen dioxide (NO2) is a red or orange/brown gas with a characteristic sharp, biting odor. ... 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 is the anhydride of the unstable nitrous acid (HNO2), and produces it when mixed into water. If the nitrous acid is not then used up quickly, it decomposes into nitric oxide and nitric acid. Nitrite salts are sometimes produced by adding N2O3 to solutions of bases.
External links
National Pollutant Inventory - Oxides of nitrogen fact sheet
When a mixture of equal parts of nitric oxide and nitrogen dioxide, NO2, is cooled to -21 C (-6 F), the gases form dinitrogentrioxide, a blue liquid consisting of N2O3 molecules.
Dinitrogen pentoxide, N2O5, is a white solid formed by the dehydration of nitric acid by phosphorus(V) oxide.
Dinitrogentrioxide is the anhydride of nitrous acid, HNO2, and dinitrogen pentoxide is the anhydride of nitric acid, HNO3.
Dinitrogentrioxide is only stable in the liquid and solid phases, and decomposes back to NO and NO when heated above 3°C. The chemical compoundnitric 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.
Dinitrogen pentoxide, N2O5, is a white solid formed by the dehydration of nitric acid by phosphorus(V) oxide.
Dinitrogentrioxide is the anhydride of nitrous acid, HNO2, and dinitrogen pentoxide is the anhydride of nitric acid, HNO3.
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