... and acetone.4 and melting point about 171 °C.5, boric acid in the water solubility with temperature ... °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 ... in our products please contact me Orthoboric acid 99.5% Technical Grade