Barium sulfate CAS NO.7727-43-7

Barium sulfate 98% Detailed Description CAS No.: 7727-43-7 Molecular Formula: BaSO4 Molecular Weight: 233.39 Properties: Colorless orthorhom…

Barium sulfate 98% Detailed Description CAS No.: 7727-43-7 Molecular Formula: BaSO4 Molecular Weight: 233.39 Properties: Colorless orthorhombic system crystalline or white amorphous powder, relative density 4.5015, melting point 1580, nontoxic, almost insoluble in water, ethanol and acid, soluble in hot and concentrated sulfuric acid. Dried, it is easy to conglomerate. Spec. Super-fine barium sulfate powder The specification of each grade: Super Fine Barium Sulfate Powder (AY-45um) 1) Median diameter 17um-18um 2) Moisture. 0.2% (max.) 3) reside on 325 mesh sieve 0.02% (max.) 4) Whiteness 96% - 98% 5) Soluble salt 0.15% (max.) 6) pH value 6 - 8 7) BaSO4 purity 98% 8) Ignition loose. 0.5% (max) 9) D97(um) 38um 10) Heavy metals (as Pb) 5PPm (max) 11) Oil absorption 9.0g/100g 12) True specific gravity 4.42 g/cm3 Product features: manufacturing technique different from common barium sulphate precipitated by using sulphuric acid process.Product have less metal impurities.Have no harzard gas during process. It's odourless when process or mix with other chemicals on high temperature. high brightness,low specific conductivity, suitable for battery filling use,very good dispersibility,it’s hard to agglomeration or precipitate .Have narrow and homogeneous particle size distribution,particles appearance similar to sphericity. Application/Uses: 1. used in powder coating: Enhance coating brightness,reduce cost by decreasing TiO2 use volume. semi-finished products have good well-distributed particle size,in favor of controling powder particle size distribution. Good compatibility with resin, hard to agglomeration or precipitate Increase glossiness and mechanical hardness of powder coating. Recommend product formulation as follows:epoxide resin 30g, polyester resin 30g,titanium dioxide 15g,Ultrafine BARIUM SULPHATE 8—10g, addition agent 15—17g. 2.used in PVC,can partly instead titanium dioxide against advantages of suparfine,clean,well distribution,high brightness. 3.used in battery as inorganic expansive material,prevent Pb specific area contractive.This type have exceed Germany quality standard with low Fe,Non-discharge and excellent dispersity. Packing:N.W 25kg plastic woven bag with lining.