Peracetic Acid (CAS 79-21-0) Sigma-Aldrich

Peracetic Acid molecular structure — Molecular structure

The Sigma-Aldrich catalog lists 4 grades and pack sizes of Peracetic Acid (CAS 79-21-0). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS	79-21-0
Molecular formula	C2H4O3
Molecular weight	76.05 g/mol
IUPAC name	ethaneperoxoic acid
Synonyms	Peroxyacetic acid · Ethaneperoxoic acid · Estosteril · Acetyl hydroperoxide · Peroxoacetic acid · Acetic peroxide

Safety & Hazards (GHS) Danger

Flammable

Corrosive

Acute toxic

Environmental hazard

H242 Heating may cause a fire
H301 Toxic if swallowed
H310 Fatal in contact with skin
H314 Causes severe skin burns and eye damage
H330 Fatal if inhaled
H400 Very toxic to aquatic life
H410 Very toxic to aquatic life with long lasting effects
H226 Flammable liquid and vapor
H302 Harmful if swallowed
H312 Harmful in contact with skin
H332 Harmful if inhaled

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand	Product / grade	Code
Sigma	PERACETIC ACID SOLUTION,CA.39%IN ACETIC	77240-100ML 77240-500ML	Request Quote
Sigma	PERACETIC ACID, 36-40 WT. % SOLUTION IN	433241-100ML 433241-500ML	Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.