Isobutyl nitrite

Isobutyl nitrite^[1]
Names
	Preferred IUPAC name 2-Methylpropyl nitrite
	Other names Isobutyl nitrite
Identifiers
CAS Number	542-56-3 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:46643 ;
ChemSpider	10493 ;
ECHA InfoCard	100.008.018
PubChem CID	10958;
UNII	GW9WAB6QOM ;
CompTox Dashboard (EPA)	DTXSID3020750 ;
	InChI InChI=1S/C4H9NO2/c1-4(2)3-7-5-6/h4H,3H2,1-2H3 Key: APNSGVMLAYLYCT-UHFFFAOYSA-N ; InChI=1/C4H9NO2/c1-4(2)3-7-5-6/h4H,3H2,1-2H3 Key: APNSGVMLAYLYCT-UHFFFAOYAF;
	SMILES O=NOCC(C)C;
Properties
Chemical formula	C4H9NO2
Molar mass	103.11976
Appearance	Colorless liquid
Odor	Almond-like
Density	0.87 g/mL
Boiling point	67 °C (153 °F; 340 K)
Solubility in water	Slightly soluble
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Highly flammable
Legal status	AU: S4 (Prescription only); BR: Class C1 (Other controlled substances);
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) 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, poppers.

^ Merck Index, 11th Edition, 5032.
^ CDC - NIOSH Pocket Guide to Chemical Hazards
^ Therapeutic Goods (Poisons Standard—October 2024) Instrument 2024 (Cth)
^ Anvisa (2023-03-31). "RDC Nº 784 - Listas de Substâncias Entorpecentes, Psicotrópicas, Precursoras e Outras sob Controle Especial" [Collegiate Board Resolution No. 784 - Lists of Narcotic, Psychotropic, Precursor, and Other Substances under Special Control] (in Brazilian Portuguese). Diário Oficial da União (published 2023-04-04). Archived from the original on 2023-08-03. Retrieved 2023-08-16.