1. Appearance, Colorless transparent crystal; 2. Purity, 58-60%, for industry use only; 3. Property, soluble in water and ether, insoluble in micro-ethanol. Use, Organic synthesis of Photographic esterification agent, as well as pharmaceutical, medical, printing and dyeing mordant, buffer, chemical reagents, anti-corrosion meat, pigments, tanning, and etc. Can be used to manufacture various chemical products such as furans acrylic, etc Packing