... purity of our Boric acid is over 99.5% 2.CAS: 10043-35-3 3.H3BO3 1.specification:ItemIndexContent≥ 99.5%Appearancewhite powdered ... be done in agriculture, pesticides, and trace element fertilizers. Boric acid is produced diboride matrix material, and its metal welding, ... extracting gently to change into meta-boric acid; 150-160ºC, as pyro-boric acid:300ºC, as boric anhydride(B2O3). 4.Packaging: PE ...