Nitrous Oxide
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General Characteristics Health Hazards Material Recommendations

A colorless, nonflammable, liquefied and odorless gas.

A simple asphyxiant and an anesthetic, a mild oxidizer.

 Normal Materials can be used.
TLV-TWA Flammable Limits DOT Class / Label
50 ppm Nonflammable 2.2 / Nonflammable
Molecular Weight Specific Gravity Specific Volume
44.0 1.53 @ 70 F 8.7 cu.ft./lb @ 70 F
CGA Valve Outlet CAS Registry No. UN Number
326 10024-97-2 1070
National Stock Number (NSN)
Applicable to Nitrous Oxide		 MIL Spec / Fed Specs
MSDS for Nitrous Oxide

Grade
Part #		 Purity Minimum Cylinder
Size		 Volume
LBS		 Pressure
@ 70 F psig		 Comments
Research
431870 		99.999% Min. 044 60 745

None

Supercritical Fluid
SFC/SFE
474600 		SFC A31 40 745

 
Atomic Absorption
431800 		99.5%
Liquid Phase
 044
016		 60
18
745
745

None

Technical
404100 		99.0% Min.
Liquid Phase		 044
016
007 		60
18
5		 745
745
745

None
Uses: Nitrous Oxide, N2O, also called DINITROGEN MONOXIDE, or LAUGHING GAS, one of several oxides of nitrogen, a colourless gas with pleasant, sweetish odour and taste, which when inhaled produces insensibility to pain preceded by mild hysteria, sometimes laughter. Nitrous oxide was discovered by the English chemist Joseph Priestley in 1772; another English chemist, Humphry Davy, later named it nitrous oxide and showed its physiological effect. The principal use of nitrous oxide is as an anesthetic in surgical operations of short duration; prolonged inhalation causes death. The gas is also used as a propellant in food aerosols. It is prepared by the action of zinc on dilute nitric acid, by the action of hydroxylamine hydrochloride (NH2OH HCl) on sodium nitrite (NaNO2), and, most commonly, by the decomposition of ammonium nitrate (NH4NO3).