Agent Name

Di-tert-butyl peroxide

Alternative Name

Bis(1,1-dimethylethyl)peroxide

CAS Number

110-05-4

Formula

C8-H18-O2

Major Category

Other Classes

Synonyms

Bis(1,1-dimethylethyl)peroxide; Bis(t-butyl)peroxide; Bis(tert-butyl) peroxide; Cadox; Cadox TBP; DTBP; Di-t-butyl peroxide; Di-tert-Butyl hydroperoxide; Di-tert-butyl peroxyde [Dutch]; Di-tert-butylperoxid [German]; Interox DTB; Kayabutyl D; Perbutyl D; Perossido di butile terziario [Italian]; Peroxide, bis(1,1-dimethylethyl); Peroxyde de butyle tertiaire [French]; Trigonox B; t-Butyl peroxide; tert-Butyl peroxide; [ChemIDplus] UN3107

Category

Peroxides, Organic

Description

Clear, water-white or yellow liquid; Insoluble in water; [HSDB] Faintly yellow clear liquid; Insoluble in water; [MSDSonline]

Sources/Uses

Used as an initiator for high-temperature, high-pressure polymerizations of ethylene and halogenated ethylenes; in the synthesis of polyketones; as a finishing catalyst for polystyrene; as a polymerization catalyst for acrylonitrile polymers and resins (including olefins, styrene, styrenated alkyds, and silicones); as curing agent for styrenated alkyds and silicone rubbers; as ignition accelerator for diesel fuels; and as a cross-linking agent (rubber and resins); [HSDB]

Comments

Caused muscle weakness and ataxia after intraperitoneal lethal-dose studies of rats; Mild irritant effect when administered into eyes of rabbits; [RTECS] Fire hazard; Strong oxidizer; [Hawley] A skin and mucous membrane irritant; Corrosive to eyes; [HSDB] An eye and respiratory tract irritant; [ICSC] May cause irritation; [MSDSonline]

Exposure Assessment
Vapor Pressure

25.1 mm Hg

Lethal Concentration

LC50 (rat) > 4,100 ppm/4h

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Oragnic peroxide type E, liquid."

Flammability (NFPA)

2: High ambient temperature required

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Processes

Industrial Processes with risk of exposure: