Agent Name

2,3,5-Trimethylhydroquinone

CAS Number

700-13-0

Formula

C9-H12-O2

Major Category

Other Classes

Synonyms

2,3,5-Trimethylquinol; 2,3,5-Trimethyl-1,4-benzenediol; 2,3,6-Trimethylhydroquinone; Pseudocumohydroquinone; psi-Cumohydroquinone; Trimethylhydroquinone; 1,4-Benzenediol, 2,3,5-trimethyl-; Hydroquinone, trimethyl-; [ChemIDplus] 1,4-Dihydroxy-2,3,5-trimethylbenzene; Trimethyl-p-hydroquinone; Trimethylhydrochinon; [IUCLID] 3,6-Dihydroxypseudocumol; TMHQ; [RTECS] 2,3,5-Trimethylbenzene-1,4-diol; [ToxPlanet: ECHA REACH Registrations] 3,6-Dihydroxypseudocumene; [Sigma-Aldrich MSDS] UN3077

Category

Phenols

Description

Beige powder; [Sigma-Aldrich MSDS]

Sources/Uses

"Reducing agent." [ChemIDplus] Used to make fine chemicals; [ExPub: ECHA REACH Registrations]

Comments

Causes burns or irritation to rabbit skin; A severe eye irritant in rabbits; A skin sensitizer in guinea pig skin painting test; [IUCLID] Danger of skin sensitization; [MAK] Causes corneal damage, other cardiac changes, and emphysema in inhalation lethal-concentration studies of rats; [RTECS] An irritant that may cause serious eye injury; May cause skin sensitization; Harmful by inhalation; [Sigma-Aldrich MSDS] See "Hydroquinone."

Exposure Assessment
Vapor Pressure

0.000204 mm Hg

Lethal Concentration

LC50 (rat) = 1,500 mg/m3/4hr

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Environmentally hazardous substances, solid, n.o.s."

Adverse Effects
Skin Sensitizer

Yes

Links to Other NLM Databases
Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent: