Barium Sulphate (Natural, Precipitated)CAS No.: 7727-43-7Molecular Formular: BaSO4, Molecular Weight: 233.39Property: orthorhombic colorless crystals or a white amorphous powder. Almost insoluble in water, ethanol and acid, dissolve in hot concentrated sulfuric acid.Usage: mainly used in the paint, ink, poster paint, cosmetics, polymer resin as fillers and chloroethane weight agent. Not only as filler in rubber products, but also as a reinforcing agent. Clarifying agent in glass making, erection defoaming effect and increase gloss. Inorganic industry for the manufacture of other barium salts such as barium hydroxide, barium carbonate, barium chloride and other raw materials. Industrial production of wood grain printing plate for printing paint primer and modulation. Organic synthesis as the production of green pigment and color lakes, physical packing.Packing: 25kg or 1000kg packed in plastic woven bag with lining.1. PRECIPITATED GRADEBARIUM SULPHATE PRECIPITATED (SUPERFINE GRADE)THE INSPECTION IS BASED ON GB/T2899-2008Items StandardBaSO4(as per dry)98% minWater Soluble0.30% maxMoisture0.30% maxFineness(Residue on sieve of 325um)0.20% maxOil absorption10%-30%Volatility at 105℃,%≤0.30% maxIron(Fe)0.004% maxPH value (100g/L suspension)6.5-9.0Whiteness94.0% minParticle Size distribution≤10um80% min≤5um60% min≤2um25 % min2. BARITE POWDERTHE INSPECTION IS BASED ON GB/T2899-82ItemsStandardBaSO498% minVolatility at 105℃,%≤0.30% maxWater Soluble0.03% maxIron(Fe)0.003% maxFineness (Residue on sieve of 45um,)0.30% maxOil absorption10%-18%Moisture0.15% maxPH value (100g/L suspension)6.0-7.0Whitenesswe could do as customer required (100 mesh–5000 mesh)