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Molecular Formula C9H10O3
Introduction Methyl tetra-Hydro Phthalic Anhydride (MTHPA) has been used in the curing agents for epoxy resins, solvent-free paints, laminated boards epoxy adhesives and so on. When used in the curing agent for epoxy resins, there are many excellent performances such as long-term storage at room temperature, low freezing point, low volatility and low toxicity.

Also widely used in motors, dry-type transformers, high voltage switches, transformers, line-output transformers, appliances capacitors, integrated circuits impregnation, casting and winding.

Sales Specification

ITEMS SPECIFICATION Typical COA
Appearance Colorless to light yellow transparent liquid Light yellowish transparent liquid
Color, Pt-Co 50max 22
Ctystallizing point -15℃max -16℃
Viscosity, 25℃ 40 mpa.s max 42.27 mpa.s
Acid Value 660.0-685.0 mgKOH/g 664.1 mgKOH/g
Anhydride Group 40.5%min 42.27%
Density, 20℃ 1.21±0.05 g/cm3 1.198 g/cm3
Free Acid 0.50%max 0.04%
Packing Available in 220kg steel drums, 1100KGS/IBC, bulk, etc.
Storage This product should be kept away from light, airtight, moisture and fire source during storage
Shelf Life 12 months from production date.

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