... acid powder Molecular Formula: H3BO3Molecular Weight: 61.83 ItemIndicatorsExcellent productFirst-class productQualifiedboric acid(H3BO3) 99.6-99.8%99.3-99.4%≥99.0% ... 70Heavy Metal(Pb) ≤0.001-------- Appearance:White crystal powder or three oblique axial plane of the scaly and shiny ... woven bag, net weight 50 kg. Properties: white crystalline powder. There are creamy feel, no smell, soluble in water, ...