... ether and acetone.4 and melting point about 171 °C.5, boric acid in the water solubility with temperature and increase ... gradually dehydration generating partial boric acid, 150 ~ 160 °C when coke boric acid, 300 °C generated boric acid anhydride (B2O3).6 ... , oral - rats LD50:2660 mg/kg, Oral - mice LD50:34.5 mg/kg.Gently only,UseFor glass, enamel, pharmaceutical, cosmetic industries ...