1 the purity of our soda ash is 99.2%min 2 widely used in papermaking,printing,dye etc. 3 ... with acid.Standard: GB210.1 2004 Premium gradeItemValueResultAlkalinity( as Na2CO3)% ≥99.299.3Chloride ( as NaCL) % ≤0.700.60Fe % ≤0 ... China (Mainland)Grade Standard: Agriculture Grade, Electron Gra...Purity: 99.2%Appearance: white crystalline granulesApplication: chemicals,metallurgy,medicine,petr...Brand Name ...