Methyltetrahydrophthalic Anhydride( MTHPA ) CAS No. 11070-44-3 HS Code: 29172090 UN No.: N/A EC NO: 247-830-1 Molecular Structure: Molecular Formula: C9H10O3 Molecular Weight: 116.17 MSDS : Available on request FP: 140 Property: Clear yellow liquid, no impurity.Soluble in benzene,acetone,etc. Sensative in moisture. 1.High purity and light luster:Can be used to prepare colorful epoxy resin solidifier; 2.Low viscosity:It´s easy to be casted and sealed,while casting,plenty of fillers are acceptable,thus can improve the quality of the finished products. 3.Good stability:The duration is longer and the freezing point is much lower.It can be stored at room temperature for long time. 4.Low volatility:Low toxic. It´s just 2.5% of amine solidifier in toxicity.Low loss on drying. Specification: Item Specifications Actural Results Appearance Light yellow transparent liquid, no impurity Light yellow transparent liquid, no impurity Color and luster(Pt-Co), < 300# 300# Density g/cm3,20 1.21±0.05 1.21 Crystallization Point, < -15 -15 Viscosity Pa.S(25) 0.035-0.050 0.037 Acid value,mg,KOH/g 660-685 677 Acid anhydride,%,≥ 41.5 42.7 Heating loss,%,(120),≤ 1.5 1.5 Packing: 25kg plastic drum or 220kg iron drum or upon customers´ demand. 17.6MT/20´FCL Applications: Epoxy resin curing agents, solvent free paints, laminated boards, epoxy adhesives, etc. With the many advantages, e.g. long-term storage at room temperature, low freezing point, small volatilization and low toxicity, MTHPA is widely used in electric machines, dry-type transformers, high voltage switches, mutual inductance equipments, horizontal output transformers, household appliances capacitors, power capacitors and resistances, and the impregnating, casting and wrapping of integrated circuits.
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