C9H12O3
168.19 g/mol
Industrial ChemicalDanger
Methylhexahydrophthalic anhydride
CAS25550-51-0EC256-356-4
Category
Industrial Chemical
Compound Class
Ester
Primary Use
Epoxy resin hardener
Methylhexahydrophthalic anhydride is a cyclic dicarboxylic anhydride used as a curing agent in epoxy resin systems. It also serves as an allergen in occupational settings.
Epoxy resin hardenerPolyester and alkyd resin manufacturingPlasticizer production
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
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Methanolysis reagent and base catalyst
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industrial solvent and intermediate
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chemical intermediate
ReferenceSame Category
Titanium nitride
CAS25583-20-4
Ceramic coating for surface hardening
Referencesame scaffold
1,2,4-Cyclohexanetricarboxylic anhydride
CAS53611-01-1
pharmaceutical intermediate
Referencesame scaffold
Hexahydrophthalic anhydride
CAS85-42-7
curing agent for epoxy resins
Referencesame scaffold
4-methylhexahydrophthalic anhydride
CAS19438-60-9
Hardener and dispersing agent
Safety Reference
Danger
H317May cause an allergic skin reaction
H318Causes serious eye damage
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation
Regulatory Compliance1
- EU REACH SVHCEURegulation
Customs Tariff Classification
The international HS code for Methylhexahydrophthalic anhydride (CAS 25550-51-0) is 2917.20.
HS code (international, 6-digit)
2917.20
EU CN code (8-digit)
2917 20 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
7a-methyl-4,5,6,7-tetrahydro-3aH-2-benzofuran-1,3-dione
InChIKey
VYKXQOYUCMREIS-UHFFFAOYSA-N
SMILES
CC12CCCCC1C(=O)OC2=O
Synonyms (21)
- MHHPA
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