Agent Name

Tetrahydromethylphthalic anhydride

CAS Number

11070-44-3

Formula

C9-H10-O3

Major Category

Plastics & Rubber

Synonyms

1,3-Isobenzofurandione, tetrahydromethyl-; [ChemIDplus] Tetrahydromethyl-1,3-isobenzofuranedione; Methyltetrahydrophthalic anhydride; [eChemPortal: SIDSUNEP]

Category

Acid Anhydrides, Cyclic

Sources/Uses

Used mainly as a hardener for epoxy resins; [eChemPortal: SIDSUNEP]

Comments

Sensitizing substance; [MAK] "Several occupational sensitization cases by inhalation at processing sites were reported. Respiratory sensitization by this substance mediated by IgE have been reported (Nielsen, J. et al.1992, Yokota, K. et al. 1998, Yokota, K. et al. 1999)." [eChemPortal: SIDSUNEP] May cause skin and respiratory sensitization after prolonged contact; May cause serious damage to eyes; [eChemPortal: ESIS] Danger of sensitization of airways; [MAK] See "ACID ANHYDRIDES."

Exposure Assessment
Vapor Pressure

0.003 mm Hg

Explanatory Notes

"The Japan society for occupational health recommended 50 ug/m3 as a limit for this substance exposure during an 8 hr work shift." [eChemPortal: SIDSUNEP]

Adverse Effects
Asthma

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:

Processes

Industrial Processes with risk of exposure: