Molecular formula C8H10O3
Molecular weight 154.17
CAS NO. 85-42-7
UN NO. /
CN NO. /
Chemical name Hexahydrophthalic anhydride
Prepared By ICASON PM REVISION：2010
Approved By PRODUCTION SPECIFICATION
HHPA is a white solid,soluble in benzene and acetone, moisture adsorption.Compared with THPA, hexahydrophthalic anhydride has light color and luster, low viscosity, small volatility, low toxicity, small loss on heating, stable performance, long using life, low freezing point and can be long-term stored at room temperature.
It is mainly used to the synthesis of polyester resin and normal temperature curing alcohol acid resin, also use as epoxy resin coating curing accelerator, which can improve curing speed.
Testing Item Limit
Colour and lustre.（platinum-cobalt ） <30#
Iodine value% <1.0
Acid valuemgKOH/g 710～740
Free acid % <1.0
Melting point℃ 32-34
Specific gravity 1.18
Package and Storage：
220kg NW,Iron barrel.
In transportation process, it should avoid moisture, fire and water. It should be stored in dry and ventilated warehouse.