Peroxybenzoic acid, t-butyl ester

Synonyms

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

Category

Curing Agents (Aromatic)

Description

Colorless liquid; mp = 8.5 deg C; [Hawley] Colorless to slightly yellow liquid; mp = 8 deg C; [HSDB]

Sources/Uses

Used as polymerization initiator (polyethylene, polystyrene, polyacrylates, and polyesters) and curing agent (unsaturated polyesters and silicon rubber); Also used as a chemical intermediate; [HSDB]

Comments

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

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."

Other CNS neurotoxin

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

Processes

Industrial Processes with risk of exposure:

• Plastic Composites Manufacturing