Sodium Metasilicate
Application: It 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, corrosing prevention for metal (i.e. Zinc, Aluminum), possesses the character of softening water.
Specifications
Beaded anhydrous sodium metasilicate
| Items |
Index |
| Na2O% |
50.501.00 |
| Sio2% |
46.001.00 |
| Fe |
200ppm max |
| Bulk density(g/cm3 |
1.05-1.35 |
| Particle Size20-65mesh% |
93.0 min |
| Rate of solution in water(5%by weight@21) |
80second |
| Appearance |
white,uniform,beaded. |
Sodium metasilicate pentahydrate
| Items |
Fine |
Grade |
Passed |
| Na2O % |
28.5-30.0 |
28.0-30.5 |
28.0-30.5 |
| Sio2 % |
27.3-29.2 |
27.0-29.0 |
27.0-29.0 |
| Fe % |
0.03max |
0.05max |
|
| Water insoluble % |
0.20max |
0.03max |
|
| Whiteness % |
75min |
70min |
|
Sodium metasilicate nonanhydrate
| Items |
Index |
| Na2O % |
20.0-23.5 |
| Sio2 % |
19.0-23.5 |
| Fe % |
0.05max |
| Water insoluble % |
0.30max |
| Whiteness % |
70min |
H.S.No28391100
|
Sodium Metasilicate
