Synonyms:Gallice acid ethyl ester.EG. Chemical name：Ethyl -3,4,5-trihydroxybenzoate Mol．Form and Mol．Wt：C9H10O5=198.2 CAS 831-61-8 Description：A white or alumst white, crystalline powder; odourless. Slightly soluble in water freely soluble in ethanol and in ether, practically insoluble in arachis oil. Specification: Meeting the requirement of BP1998 edition Main testing indexes: Melting point: 151~154℃ Chloride: max 330ppm Loss on drying: max 1.0% Sulphated ash: max0.1% Uses: It is used as antioxidant of medicinal and biochemical preparations. Packaging: A net weight of 500g, packed in plastic bags, out packed with paperboard cases, A net weight of (40bags×500g).