Boric acid 
 White crystalline powder or flake triclinic axis, shiny crystals, a creamy feel, no odor. Soluble in water, alcohol, glycerol, ethers and essential oils in a weak acid solution. Large for the glass (optical glass, acid glass, heat-resistant glass, glass fiber insulation materials) industry, to improve the heat glass, transparent performance, increase mechanical strength, shorten the melting time. Property: Boric acid is actually a boron oxide hydrate (B2O3 ? 3H2O. The proportion of 1.435 (15 ℃). Boric acid solubility in water increases with increasing temperature, and that with the evaporation of water vapor; in the solubility of inorganic acid to smaller than the solubility in water. heated to 70 ~ 100 ℃ gradually in dehydrated borate, 150 ~ 160 ℃ generated when coke boric acid, 300 ℃ generated when the acid anhydride (B2O3). boric acid in the enamel, ceramic in to enhance gloss enamel products, and color fastness, glazes and pigments is also one of the ingredients. in the pharmaceutical industry, the metallurgical industry as additive, solvent, especially boron steel with high hardness and good ductility rolling to replace the nickel steel. Boric acid has antiseptic, do preservatives, such as wood preservative. In metal welding, leather, photographic and other industries as well as dyes, fire resistant fabric, synthetic gems, capacitors are used in the manufacture of cosmetics, it can also make insecticide agent and catalyst. trace element boron in agriculture as fertilizer, fertilizer for many crops, can increase the oil content of rapeseed. by the boric acid can produce a variety of boron, widely used in national defense and other industrial sectors and research institutes.