acetic acid

Acetic acid is a chemical compound with the formula C₂H₄O₂ and a molecular weight of 60.05. It has a melting point of 62 and a boiling point of 244. The substance exhibits a density of 1.05, a vapor pressure of 100, and a surface tension of 27.1. Its refractive index is 1.372, and it has a pKa of 4.756.

Safety data for acetic acid includes a flash point of 103 and an autoignition temperature of 427. The lower flammable limit is 4, while the upper flammable limit is 19.9. The immediately dangerous to life or health concentration is 123. Exposure limits include a time-weighted average of 25 and a short-term limit of 37. Toxicity measures list a median lethal dose of 4960 and a minimal lethal dose of 600.

The compound has a partition coefficient water/octanol of -0.17 and an ionization energy of 10.66. It contains one hydrogen bond donor and two hydrogen bond acceptors. Acetic acid is referenced by 1,778 other encyclopedia articles.