Methylhexahydrophthalic Anhydride H-317

Name: Methylhexahydrophthalic anhydride, MHHPA, Methyl-1,2-cyclohexanedicarboxylic anhydride, mixture of isomers.
Product No: B1031     CAS No:  25550-51-0    Formula:  C9H12O3    Formula Weight: 168.19
Properties: Soluble in benzene, acetone, etc. Sensitive to moisture. specific gravity 1.162.
Application: MHHPA is a thermo-setting epoxy resin curing agent mainly used in electric and electron field. With the many advantages, e.g. low melting point, low viscosity of the mixtures with alicyclic epoxy resins, long applicable period, high heat-resistance of the cured material and excellent electrical properties at high temperature, MHHPA is widely used for impregnating electrical coils, casting electricity components and sealing semiconductors, e.g. outdoor insulators, capacitors, light emitting diodes and digital displays.
Package: Packed in 25 kg plastic drums or 220kg iron drums.
Transport: Hazard Class 8, Packing Group II.
Cautions: Store in cool, dry places and keep away from fire and moisture.





Colorless liquid


Iodine Value 


Viscosity ( 25)


Free Acid 

1.0 %

Freezing Point