isobutyl nitrite isobutyl nitrite isobutyl nitrite, c4h9no2, is an alkyl nitrite, an ester of isobutanol and nitrous acid. its chemical structure is (ch3)2ch-ch2-ono. isobutyl nitrite names preferred iupac name 2-methylpropyl nitrite other names isobutyl nitrite identifiers cas number 542-56-3 y 3d model (jsmol) interactive image chebi chebi:46643 y chemspider 10493 y echa infocard 100.008.018 pubchem cid 10958 unii gw9wab6qom y comptox dashboard (epa) dtxsid3020750 inchi inchi=1s/c4h9no2/c1-4(2)3-7-5-6/h4h,3h2,1-2h3 ykey: apnsgvmlaylyct-uhfffaoysa-n yinchi=1/c4h9no2/c1-4(2)3-7-5-6/h4h,3h2,1-2h3key: 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 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). y verify (what is yn ?) infobox references isobutyl nitrite is a pungent colorless liquid. it acts as a vasodilator, and is used as an inhalant recreational drug, poppers. applications isobutyl nitrite is one of the compounds used as poppers, an inhalant drug that induces a brief euphoria. also, it is used as part of the antidote package for cyanide poisoning. safety may cause headaches, dizziness and fainting. isobutyl nitrite is poisonous to people with glucose-6-phosphate dehydrogenase deficiency.