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Topic summary

Peracetic acid

Peracetic acid
Names Preferred IUPAC name
Ethaneperoxoic acid
Other names
Peroxyacetic acid
Acetic peroxide
Acetyl hydroperoxide
Proxitane
Percidine
Identifiers
3D model (JSmol)
Abbreviations PAA ChEBI
ChEMBL
ChemSpider
ECHA InfoCard100.001.079EC Number
  • 201-186-8
KEGG
RTECS number
  • SD8750000
UNII
UN number3107 3105
  • InChI=1S/C2H4O3/c1-2(3)5-4/h4H,1H3
    Key: KFSLWBXXFJQRDL-UHFFFAOYSA-N
  • InChI=1/C2H4O3/c1-2(3)5-4/h4H,1H3
    Key: KFSLWBXXFJQRDL-UHFFFAOYAD
  • CC(=O)OO
Properties CH3CO3H Molar mass76.05 g/mol Appearance Colorless liquid Density1.0375 g/mL Melting point0 °C (32 °F; 273 K) Boiling point105 °C (221 °F; 378 K) 25 C @ (1.6 kPa) Acidity (pKa) 8.2 1.3974 (589 nm, 20 °C) Viscosity3.280 cPPharmacology QG51AD03 (WHO) Hazards GHS labelling: DangerH226, H242, H302, H312, H314, H332, H400P210, P220, P233, P234, P240, P241, P242, P243, P260, P264, P270, P271, P273, P280, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P321, P322, P330, P363, P370+P378, P391, P403+P235, P405, P411, P420, P501NFPA 704 (fire diamond)
3
2
2
OX
Flash point40.5 °C (104.9 °F; 313.6 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Peracetic acid (also known as peroxyacetic acid, or Percidine) is an organic compound with the formula CH3CO3H. This peroxy acid is a colorless liquid with a characteristic acrid odor reminiscent of acetic acid. It can be highly corrosive.

Peracetic acid is a weaker acid than the parent acetic acid, with a pKa of 8.2.

Wikipedia source