Butyl nitrite

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Butyl nitrite
Butyl nitrite 3d structure.png
Clinical data
ATC code
  • none
CAS Number
PubChem CID
CompTox Dashboard (EPA)
ECHA InfoCard100.008.057 Edit this at Wikidata
Chemical and physical data
Molar mass103.12 g·mol−1
3D model (JSmol)
Boiling point78.0 °C (172.4 °F)

Butyl nitrite is an alkyl nitrite made from n-butanol. Butyl nitrite is used recreationally as poppers.


Synonyms include 1-butyl nitrite, n-butyl nitrite and nitrous acid butyl ester.

It can be prepared by reacting nitrous acid (generated in situ by reacting a metal nitrite with a mineral acid) with n-butanol.

Butyl nitrite is highly flammable. May cause toxic effects if inhaled or absorbed through skin. Contact with this material may irritate or burn skin and eyes.[1]


Butyl nitrite is one of the compounds used as poppers, an inhalant drug that induces a brief euphoria. Among the inhalant's common street names are "liquid rush" (or just "rush") and "locker room." It is sometimes marketed as "liquid incense."