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Acetic Acid (Vinegar) (CH₃COOH) — Properties, Uses & Safety

🏠 Everyday & Household

Overview

The main component of vinegar, a weak carboxylic acid widely used in food preservation and as a household cleaner.

IUPAC Name: acetic acid
CAS Number: 64-19-7
PubChem CID: 176
Molecular Formula: CH₃COOH
Molar Mass: 60.05 g/mol
State at STP: liquid
Appearance: Colorless liquid with sharp vinegar odor

Physical Properties

Melting Point: 16.6 °C
Boiling Point: 117.9 °C
Density: 1.049 g/cm³
ΔH°f: -484.5 kJ/mol
ΔG°f: -389.9 kJ/mol

Composition

Element	Count	Mass %
C	2	40%
H	4	6.71%
O	2	53.29%

Safety Information

GHS Hazard Codes

H226H314

GHS Pictograms

flamecorrosion

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