1.White Powder which used as a material of high efficiency detergent and metal cleaner. 2.CAS:10213-79-3 3.UN:3253 This product is mainly used in making high efficiency detergent and metal cleaner. Instead of STPP, it can raise cleaning efficiency and reduce environmental pollution, provides excellent alkaline buffer, corrosive prevention for metal (i.e. Zinc, Aluminum),possesses the character of softening water. Sodium metasilicate pentahydrate:

CAS No 10213-79-3Molecular Formula Na2SiO3.5H2O Molecular Weight 212.4UN NO. 3253

Sodium Oxide (Na2O): 28.00-30.00 % Silica (SiO2): 27.00-29.00 % Water Insoluble: 0.2 % MaxIron (Fe): 200 ppm MaxWhiteness: 80 % MinParticle Size(18-60mesh): 90 % MinBulk Density(g/cm3): 0.7-1.0 

  Sodium Metasilicate Anhydrous

CAS No 6834-92-0Molecular Formula Na2SiO3Molecular Weight 122.4UN NO. 3253

Sodium Oxide (Na2O):  49.50-51.50 % Silica (SiO2):  45.00-47.00 % Iron (Fe):  200 % MaxWhiteness:   85 % MinParticle Size(18-60mesh):   90 % MinBulk Density(g/cm3):   1.05-1.35

Sodium metasilicate