Peroxybenzoic acid, t-butyl ester

Agent Name
Peroxybenzoic acid, t-butyl ester
Alternative Name
tert-Butyl peroxybenzoate
CAS Number
Major Category
Plastics & Rubber
Peroxybenzoic acid, t-butyl ester formula graphical representation
tert-Butyl peroxybenzoate; Benzenecarboperoxoic acid, 1,1-dimethylethyl ester; Benzoyl tert-butyl peroxide; Chaloxyd TBPB; Esperox 10; Novox; Perbenzoate de butyle tertiaire [French]; Perbenzoic acid, tert-butyl ester; Perbutyl Z; Peroxybenzoic acid, tert-butyl ester; Trigonox C; t-Butyl perbenzoate; t-Butyl peroxy benzoate; terc.Butylester kyseliny peroxybenzoove [Czech]; terc.Butylperbenzoan [Czech]; tert-Butyl perbenzoate; tert-Butyl peroxy benzoate; [ChemIDplus] UN3103
Curing Agents (Aromatic)
Colorless liquid; mp = 8.5 deg C; [Hawley] Colorless to slightly yellow liquid; mp = 8 deg C; [HSDB]
Used as polymerization initiator (polyethylene, polystyrene, polyacrylates, and polyesters) and curing agent (unsaturated polyesters and silicon rubber); Also used as a chemical intermediate; [HSDB]
An oxidizer; [Hawley] A strong oxidizer; Explosive; Fire and explosion hazard on contact with organic materials; [CAMEO] In animal experiments, effects included somnolence and seizures after inhalation and liver changes after ingestion; [RTECS] Injection into chicken eggs caused a small increase in embryo malformations; [REPROTOX] Oxidizer that can cause fire on contact with combustible substances; An irritant; [MSDSonline]
Biomedical References

Exposure Assessment

Lethal Concentration
LC (rat) > 57 mg/m3/4h
Explanatory Notes
VP = 0.33 mm Hg at 50 deg C; [ChemIDplus] The Guide in the Emergency Response Guidebook is for "Organic peroxide type C, liquid."

Adverse Effects

Other CNS neurotoxin
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Diseases, Processes, and Activities Linked to This Agent


Industrial Processes with risk of exposure: