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 |
SHY—9601 |
SHY—9602 |
SHY-9603 |
Appearance |
light yellow transparent liquid |
colorless transparent liquid |
Color (Pt-Co) |
<300# |
<200# |
<100# |
Density g/cm3 20℃ |
1.21±0.05 |
1.21±0.05 |
Crystallization point ℃﹤ |
-15 |
-15 |
Viscosity pa.s(25℃) |
0.035—0.050 |
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:
SHY—9601/9602/9603 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.
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