Methylhexahydrophthalic anhydride

Synonyms

1,3-Isobenzofurandione, hexahydromethyl-; Hexahydromethylphthalic anhydride; 1,2-Cyclohexanedicarboxylic anhydride, methyl-; [ChemIDplus] Methylhexahydrophthalic acid anhydride; Hexahydromethylphthalic acid anhydride; MHHPA; [ICSC]

Category

Acid Anhydrides, Cyclic

Description

Colorless liquid; [ICSC] Clear liquid; Irritating odor when hot; [Dixie Chemical MSDS]

Sources/Uses

Cyclic acid anhydrides: Used to make polyester and alkyd resins, plasticizers, and as epoxy resin hardeners; [Reference #1]

Comments

Slowly decomposed by water forming acids; A skin and severe eye irritant; May cause skin and respiratory sensitization; [ICSC] Cyclic acid anhydrides can cause irritation and sensitization by dermal, mucous membrane, and inhalation from occupational exposure; The most common allergic diseases reported are rhinoconjunctivitis and asthma, allergic contact dermatitis is rare; [Reference #1] Reacts slowly with water; May cause severe eye irritation, corneal injury, and burns; Prolonged skin contact may cause severe irritation and burns; May cause skin and respiratory sensitization; Chronic inhalation exposure may cause bronchitis and asthma; [Dixie Chemical MSDS] See "ACID ANHYDRIDES." See "Hexahydrophthalic anhydride."

Reference Link #1

Biomedical References

0.007 mm Hg

Yes

Yes

Skin burns

Diseases

Occupational diseases associated with exposure to this agent:

• Asthma, occupational
• Contact dermatitis, allergic

Processes

Industrial Processes with risk of exposure:

• Plastic Composites Manufacturing