2-Acetylpyridine is an organic compound with the formula CH3COC5H4N. It is a viscous colorless liquid that is widely used as a flavoring substance. It is found in malt and produced by the Maillard reaction and by nixtamalization. It contributes to the flavor of corn tortillas, popcorn, and beer. ; The compound is prepared by acylation of 2-bromopyridine via the Grignard reagent.

Appearance and properties: transparent colorless to slightly brown liquid

Density: 1.08 g/mL at 25 °C(lit.)

Boiling point: 188-189 °C(lit.)

Melting point: 8-10 °C

Flash point: 164 °F

Refractive index: n20/D 1.521(lit.)

Storage conditions: Keep away from heat, sparks,  and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry,  well-ventilated area away from incompatible substances.

Vapor pressure: 0.481mmHg at 25°C

Usage:GB 2760--1996 Approved for use as an edible spice. Used as a tobacco flavor to add aroma to tobacco. Organic synthesis, pharmaceutical industry, rubber industry.