Molecular formula: BaCl2.2H2O Molecular weight: 244 Properties: White rhombic flaky crystal , specific gravity:3.10 , melting point:96.2 , boiling point:1560 . Stable in the air ,toxic to human beings and animals.Product classification:According to the purity of product ,divided into two levels :first grade?99.0%,two grade ?98.0% .