Boric acid manufacturer of boric acid properties

White powder crystal or three oblique surface scaly crystallization with luster. Has a soapy feel, no smell. Soluble in water, alcohol, glycerin, ethers and essential oil. No smell. Tiny acid after the bitter taste with sweet. Contact with the skin has a soapy. No change in the air show. Along with the water vapor volatile. Heating to 100 ~ 105 ℃ when lose a molecule of water to form a metaborate, in 104 ~ 160 ℃ heating duration time into focal boric acid, higher temperature of water is formed. 0. 1 mol/L solution pH of 5. 1. 1 g 18 ml soluble in cold water, 4 ml 18 ml cold boiling water, ethanol, glycerin 6 ml boiling ethanol and 4 ml. Solubility in water can increases with hydrochloric acid, citric acid and tartaric acid to join. Relative density 1. 4347. Melting point 184 ℃ ( Decomposition) 。 The boiling point of 300 ℃. The median lethal dose ( In rats, through the mouth) 5. 14G/kG。 Stimulating. Serious cause of death, when death is toxic, internal and minimum: adult oral 640 mg/kg, 8 of the skin. 6 g/kg, intravenous 29 mg/kg; Baby oral 200 mg/kg. 10 mg/m3 maximum allowable concentration in the air.