Nitrous oxide

$498
Product name: Nitrous oxide
CAS: 10024-97-2
MF: N2O
MW: 44.01
EINECS:233-032-0
MDL Number:MFCD00011492
Synonyms:hemioxyded’azote ;Hyponitrous acid anhydride;hyponitrousacidanhydride ;Nitral;Nitrogen oxide (N2O);nitrogenhypoxide ;nitrogenoxide(n2o) ;nitrousoxide,compressed

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Sigma-Aldrich

Package

227g

ManufacturerSigma-Aldrich
Product number295590
Product descriptionNitrous oxide 99%
Packaging227g
Price$498
Updated2026-04-30
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Manufacturer	Product number	Product description	Packaging	Price	Updated	Buy
Sigma-Aldrich	295590	Nitrous oxide 99%	227g	$498	2026-04-30	Buy

Properties

Melting point :−91 °C(lit.)
Boiling point :−88 °C(lit.)
Density :1.23 g/cm3 (-89 ºC)
vapor density :1.53 (15 °C, vs air)
vapor pressure :51.7 mm Hg ( 21 °C)
FEMA :2779 | NITROUS OXIDE
refractive index :1.380
solubility :At 20 °C and at a pressure of 101 kPa, 1 volume dissolves in about 1.5 volumes of water.
form :colorless gas
pka :-16.68±0.53(Predicted)
color :colorless
Odor :odorless
Water Solubility :slightly soluble H2O; soluble alcohol, ether, conc H2SO4 [HAW93]
Specific Heat Capacity :Cp(gas): 0.88 J/(g·K), at 25℃
Merck :13,6687
BRN :8137358
Henry's Law Constant :2.4×10^-4 mol/(m³Pa) at 25℃, Burkholder et al. (2019)
Dielectric constant :1.6(0℃)
Stability :Oxidant, strongly supports combustion. May react violently with some materials. Thermal decomposition yields toxic products. Incompatible with aluminium, boron oxides, hydrazine, strong reducing agents.
Cosmetics Ingredients Functions :FRAGRANCE
PROPELLANT LogP :0.43
CAS DataBase Reference :10024-97-2(CAS DataBase Reference)
EPA Substance Registry System :Nitrous oxide (10024-97-2)

Safety Information

Symbol(GHS):

Signal word:

Danger

Hazard statements:

Code	Hazard statements	Hazard class	Category	Signal word	Pictogram	P-Codes
H270	May cause or intensify fire; oxidizer	Oxidising gases	Category 1	Danger		P220, P244, P370+P376, P403
H280	Contains gas under pressure; may explode if heated	Gases under pressure	Compressed gas Liquefied gas Dissolved gas	Warning		P410+P403

Precautionary statements:

P220	Keep/Store away from clothing/…/combustible materials.
P244	Keep reduction valves free from grease and oil.
P370+P376	in case of fire: Stop leak if safe to Do so.
P410+P403	Protect from sunlight. Store in a well-ventilated place.

Description

dinitrogen monoxide’s (N2O) common name is nitrous oxide.Nitrous oxide is a colorless, nonfl ammable, nontoxic gas with a slightly sweet odor and taste. Nitrous oxide is produced by the thermal decomposition of ammonium nitrate at approximately 240°C: NH4NO3(g) → N2O(g) + 2H2O(g).Nitrous oxide is an important greenhouse gas. Its atmospheric residence time is 120 years. A molecule of N2O has 310 times the potential for absorbing heat compared to a molecule of CO2. Nitrous oxide is stable and unreactive on the earth’s surface, but it can be transported to the stratosphere where it absorbs energy and is converted into reactive forms of nitrogen such as nitric oxide and the nitrate radical contributing to ozone destruction.

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