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Methyl Tetrahydrophthalic Anhydride

Methyl Tetrahydrophthalic Anhydride (MTHPA) is mainly used as an epoxy resin curing agent in electronics, electrical insulation, sealing, and composite material applications. It is widely used in casting, impregnation, lamination, filament winding, and pultrusion.
Alias: Methyl Tetrahydrophthalic Anhydride
CAS No.: 11070-44-3
Molecular Formula: C4H8O
Molecular Weight: 166
Product Specifications
Product GradeJH701/JH702/JH701BJH706
AppearanceLight yellow transparent liquidLight yellow transparent liquid
Color(Pt-Co)≤40#≤80#
Crystallizing Point≤-15≤-15
Acid Value660.0-685.0660.0-685.0
Anhydride Content≥41≥41
mpa.s(25℃) Viscosity≤50 (Our test value: 32) (Kinematic Viscosity: 43)50-80 (Our test value: 51) (Kinematic Viscosity: 61)
g/cm³（(20℃) Density1.210±0.051.210±0.05
Free AcidTypical ≤0.10Typical ≤0.10
Applications
Mainly used as an epoxy resin curing agent in transformers, insulating varnishes, high-voltage electrical equipment, laminates, printed circuit boards, switchgear, FRP filament-wound products, and related electrical insulation materials.

Coatings

Cleaning Agents

Resin Processing