... ; odorless, non-toxic. Use: widely used in vinylon, sodium silicate, bleaching, glass, paper making, tanning, metal smelting, ... treatment and filler industries.Grade: Class I first quality Packing: 50kg/piece, 25kg/pieceAppearance: white monoclinic crystal ... synthetic fiber, leather industry as well.Sodium sulfate Specifications Anhydrous sodium sulfate.GB/T9853-2008No .Test ItemsUnit ARResultsLevel ...