briquettes with heavy irritant odor. Sp. gr. (solid) 1.48, melting
point is 52.8ºC, boiling
point is 200ºC (760mmHg), also readily sublimates. It is
soluble in alcohol, ether, acetone and slightly soluble in petroleum ether,
carbon tetrachloride. It is soluble in water, forming maleic acid.
Usage：Manufacture of unsaturate polyester resin, alkyd
resin, insulated paint, plasticicer, maleic acid, malic acid and tartaric acid,
etc. It can be used antiseptic agent, also serve as the raw materials of
medicine, pesticide, paint, glass steel and so on.
Packing：In plastic woven bag, lined with a polyethylene
bag, N.W.25kg each.