Item	Data
	Grade A	Grade B	Qualified
(H3BO3)%     Content      ≥	99.6-100.8	99.4-100.8	99.0
Matters insoluble in water %  ≤	0.01	0.04	0.06
Na2SO4 %   ≤	0.10	0.20	0.30
Chloride(Cl)%      ≤	0.05	0.10	0.15
Iron(Fe)%     content   ≤	0.002	0.003	0.005
NH3%       ≤	0.30	0.50	0.70
Heavy metals (Pb)%    ≤	0.001	--	--

Properties: White or colorless, smooth crystals or powder, soluble in water, alcohol and glycerin.

Uses: It is chemical used for making ceramics, glazes, cements, wicks, food preservatives, special glasses; also for leather dressing compounds for preparation of hides prior to tanning; artificial precious stones; as flux in metallurgical industry, fire-proofing compositions and linings for safes; also for pigments; enamel paints, paper glazes, cosmetics, soaps, textiles, medicines, etc.

Packing:  NW:25Kg.Inner liner with double moisture proof films. Outside packing : various kinds of specification & form such as knitting bag and paper bag.