methyl Tetrahydrophthalsäureanhydrid

Methyl tetrahydrophthalic anhydride Brief intro. Methyl tetrahydrophthalic anhydride is MeTHPA for short. CAS#: 26590-20-5; molecular formula: C9H10O3; molecular weight: 166.18; specific weight: 1.15; soluble in benzene, acetone etc., can absorb moisture. Technical specification Item SHY9601 SHY9602 SHY-9603 Appearance light yellow transparent liquid colorless transparent liquid Color (Pt-Co) <300# <200# <100# Density g/cm320 1.21±0.05 1.21±0.05 Crystallization point -15 -15 Viscosity pa.s(25) 0.0350.050 0.035 0.050 Acid value mgKOH/g 660-685 660-685 Anhydride content % >40.5 >40.5 Heating loss %(120) <2.0 <2.0 Use: SHY9601/9602/9603 are curing agents for epoxy resins, and mainly used in electronics, electric work and encapsulation industries. It is the major base metal for mutual inductors, insulated paint, high-voltage electrical apparatus and glass reinforced plastics. Storage & transportation: Closed tight, protect against moisture; shelf life at room temperature is 1 yr. If absorbed moisture, it will generate precipitation.Then heat it at around 140 for recovery, and its property will not be affected.