Application: Mainly used as a glass clarifier and deformer in color and mono chrome picture tubes, and also in the glass fiber, fluorescent light tubes, light bulb, thermos flask, ruby glass. It is well resistant to long periods of strong ultraviolet ray exposure. Packing: 25KG in WPP Bag or as customer's requirement. Product Specification: #1 GRADE: Sb2O3: 58.4%&plusmn0.8 %; Na2O: 12.5%&plusmn0.5%; Sb+3: <=0.1%; Fe2O3: <=0.02 %; PbO: <=0.1 %; As2O3: <=0.02%; CuO: <=0.005 %; Cr2O3: <=0.005%; V2O5: 0.005%; Physical Water: <= 0.3%; Particle Size: Pass 80 Mesh 99%; White Degree: Pure White. Qualified Product: Sb2O3: 58.4%&plusmn0.8%; Na2O: 12.5%&plusmn0.5%; Sb+3: <=0.3%; Fe2O3: <=0.05%; PbO: <=0.3%; As2O3: <=0.05%. Physical Water: <=0.3%; Particle Size: Pass 80 Mesh 99%; White Degree: Gray White.