| Nitrogen tetroxide | IUPAC name
Dinitrogen tetroxide | | General | | Chemical formula | N2O4 | | Molecular weight | 92.011 amu | | Appearance | Yellow-brown liquid; vapor is reddish-brown | | CAS number | 10544-72-6 | | MSDS link | N2O4_MSDS_pdf (http://www.airliquide.com/safety/msds/en/090_AL_EN.pdf) | | Physical properties | | Density and phase at STP | 1.45 g/cm3 (?) | | Solubility | reacts with water | | Specific gravity | 1.44 (liquid at 20°C) | | Crystal structure | ? | pH (10% solution with water)
(pKa) | ? | Acidity constant
(pKa) | ? | | Thermal decomposition | ? K (? °C) | | Phase behavior | | Melting point | 261.928 K (-11.2 °C) | | Boiling point | 310.15 K (21.1 °C) | | Triple point | ? K (? °C)
? bar | | Critical point | ? K (? °C)
? bar | Heat of fusion
(ΔfusH) | ? kJ/mol | Entropy of fusion
(ΔfusS) | ? J/mol·K | Heat of vaporization
(ΔvapH) | ? kJ/mol | | Safety | | Ingestion | ? | | Inhalation | Corrosive & toxic | | Skin | Corrosive | | Eyes | Corrosive | | Flash point | ? °C | | Autoignition temperature | n/a °C | | Explosive limits | ? - ?% | OSHA Permissible Exposure Limit
(PEL) | 5 ppm | NIOSH Immediate Danger to Life and Health
(IDLH) | 20 ppm | | Precautions | - Hazards:
- Personal protection:
- Skin: Prevent skin contact
- Eyes: Prevent eye contact
- Wash skin: When contaminated
- Remove: When wet or contaminated
- Change: No recommendation
- Provide: Eyewash, Quick drench
- Combustible material, water, chlorinated hydrocarbons, carbon disulfide, ammonia [Note: Reacts with water to form nitric acid.]
| | Solid properties | Standard enthalpy change of formation
(ΔfH0solid) | ? kJ/mol | Standard molar entropy
(S0solid) | ? J/mol·K | Heat capacity
(Cp) | ? J/mol·K | | Density | ? g/cm3 | | Liquid properties | | ΔfH0liquid | ? kJ/mol | | S0liquid | ? J/mol·K | | Cp | ? J/mol·K | | Density | ? g/cm3 | | Gas properties | | ΔfH0gas | ? kJ/mol | | S0gas | ? J/mol·K | | Cp | ? J/mol·K | | Except where noted, all data was produced under conditions of standard temperature and pressure. IUPAC nomenclature is a systematic way of naming organic chemical compounds. ...
A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ...
The molecular mass of a substance (less accurately called molecular weight and abbreviated as MW) is the mass of one molecule of that substance, relative to the unified atomic mass unit u (equal to 1/12 the mass of one atom of carbon-12). ...
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Nitrogen tetroxide (or Dinitrogen tetroxide) (N2O4) is a hypergolic propellant often used in combination with a hydrazine-based rocket fuel. The combination was used to fuel the Titan rockets used in the Gemini missions, and is still used today in the second stage engines of Delta II rockets. By the late 1950s it became the storable oxidizer of choice for rockets in both the USA and USSR. [1] (http://www.friends-partners.org/partners/mwade/props/rocindex.htm) Hypergolic rocket fuels spontaneously ignite when their two components come into contact with each other. ...
A propellant is a material that is used to move an object by applying a motive force. ...
Hydrazine is a chemical compound with formula N2H4 used as a rocket fuel. ...
A Redstone rocket, part of the Mercury program A rocket is a vehicle, missile or aircraft which obtains thrust by the reaction to the ejection of fast moving exhaust gas from within a rocket engine. ...
For information on the band, see Fuel (band). ...
Titan is a family of U.S. expendable rockets. ...
Project Gemini insignia Project Gemini was the second human spaceflight program in which the United States of America sent humans into space, between Projects Mercury and Apollo, during the years 1963-1966. ...
A Delta II rocket launches from Cape Canaveral carrying a GPS satellite The Boeing IDS Delta II family of launch vehicles has been in service since 1989 and has successfully launched 115 projects (through August, 2004) including the last six NASA missions to Mars: Mars Global Surveyor in 1996 Mars...
Millennia: 1st millennium - 2nd millennium - 3rd millennium Events and trends Technology United States tests the first fusion bomb. ...
Nitrogen dioxide is made by the catalytic oxidation of ammonia: steam is used as a diluent to reduce the combustion temperature. Most of the water is condensed out, and the gases are further cooled; the nitric oxide which was produced is oxidised to nitrogen dioxide, and the remainder of the water is removed as nitric acid. The gas is essentially pure nitrogen tetroxide, which is condensed in a brine-cooled liquefier. In chemistry and biology, catalysis (in Greek meaning to annul) is the acceleration of the rate of a chemical reaction by means of a substance, called a catalyst, that is itself unchanged chemically by the overall reaction. ...
The most fundamental reactions in chemistry are the redox processes. ...
Ammonia is a chemical compound with the formula N H3. ...
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. ...
The chemical compound nitric acid (HNO3), otherwise known as aqua fortis, is a colorless, corrosive liquid, a toxic acid which can cause severe burns. ...
Nitrogen tetroxide is a brownish yellow liquid which is easily vaporized. It is a powerful oxidizer, and is highly toxic and corrosive. However, it is not affected by mechanical shock and does not react with air. Nitrogen tetroxide is always in equilibrium with nitrogen dioxide (NO2) and some nitrogen dioxide will be present in any quantity of nitrogen tetroxide (higher temperatures push the equilibrium towards nitrogen dioxide). The most fundamental reactions in chemistry are the redox processes. ...
The chemical compound nitrogen dioxide (NO2) is a red or orange/brown gas with a characteristic sharp, biting odor. ...
Nitrogen tetroxide is sometimes a component of smog. For the rock band named Smog, see Smog (band). ...
External link
- NIOSH Pocket Guide to Chemical Hazards (http://www.cdc.gov/niosh/npg/npgd0454.html): Nitrogen tetroxide
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