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Agent Name Catechol
Alternative Name Pyrocatechol
CAS Number 120-80-9
Formula C6-H6-O2
Major Category Other Chemicals
Synonyms 1,2-Benzenediol; 1,2-Dihydroxybenzene; 2-Hydroxyphenol; Benzene, o-dihydroxy-; C.I. 76500; C.I. Oxidation Base 26; CI 76500; CI Oxidation Base 26; Catechin (phenol); Catechol (phenol); Durafur developer C; Fouramine PCH; Fourrine 68; Katechol [Czech]; Oxyphenic acid; PYROCATECHOL; Pelagol Grey C; Phthalhydroquinone; Pyrocatechin; Pyrocatechine; Pyrocatechinic acid; Pyrocatechuic acid; Pyrokatechin [Czech]; Pyrokatechol [Czech]; o-Benzenediol; o-Dihydroxybenzene; o-Dioxybenzene; o-Diphenol; o-Hydroquinone; o-Hydroxyphenol; o-Phenylenediol; ortho-Benzenediol; ortho-Dihydroxybenzene; ortho-Dioxybenzene; ortho-Hydroquinone; ortho-Hydroxyphenol; ortho-Phenylenediol; [ChemIDplus] UN2811
Category Phenols
Description Colorless, crystalline solid with a faint odor; Note: Discolors to brown in air & light; [NIOSH]
Sources/Uses Used in the photography, rubber, dye, and oil industries as an antioxidant; also used to produce cosmetics and pharmaceuticals; [ACGIH]
Comments Repeated doses of catechol may induce methemoglobinemia in experimental animals. [HSDB] Potential skin sensitizer; Inhalation of high concentrations can cause CNS depression; [ICSC] The solid form will burn skin. [CHRIS]
Exposure Assessment
Skin Designation (ACGIH) Yes
TLV (ACGIH) 5 ppm
Vapor Pressure 0.03 mm Hg
Explanatory Notes Flash point = 127 deg C;
Flammability (NFPA) 1: must be preheated
Adverse Effects
Methemoglobinemia Methemoglobinemia, Secondary
Dermatotoxin Skin Burns
Skin Sensitizer Yes
Neurotoxin Other CNS Neurotoxin
IARC Carcinogen Possible Carcinogen
Links to Other NLM Databases
Health Studies Human Health Effects from Hazardous Substances Data Bank: CATECHOL  
Toxicity Information Search TOXNET
Chemical Information Search ChemIDplus
Biomedical References Search PubMed
Related Information in Haz-Map
Diseases Occupational diseases associated with exposure to this agent:
Processes Industrial Processes with risk of exposure:
Activities Activities with risk of exposure:





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Last updated: September, 2008