Isobutyl nitrite

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Isobutyl nitrite[1]
Isobutyl-nitrite-2D-skeletal.png Isobutyl nitrite 3d structure.png
CAS number 542-56-3 YesY
PubChem 10958
ChemSpider 10493 YesY
ChEBI CHEBI:46643 YesY
Jmol-3D images Image 1
Molecular formula C4H9NO2
Molar mass 103.11976
Appearance Colorless liquid
Odor Almond-like[2]
Density 0.87 g/mL
Boiling point 67 °C (153 °F; 340 K)
Solubility in water Slightly soluble
Main hazards Highly flammable
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Isobutyl nitrite, C4H9NO2, is an alkyl nitrite, an ester of isobutanol and nitrous acid. Its chemical structure is (CH3)2CH-CH2-ONO.

Isobutyl nitrite is a pungent colorless liquid. It acts as a vasodilator, and is used as an inhalant recreational drug.


Isobutyl nitrite is one of the compounds used as poppers, an inhalant drug that induces a brief euphoria. It is also used as part of the antidote package for cyanide poisoning.[medical citation needed]


Isobutyl nitrite is poisonous to people with glucose-6-phosphate dehydrogenase deficiency.[medical citation needed]