A7263212
Sodium metasilicate , SiO2,44-47% , 6834-92-0
Synonym(s):
Disodium metasilicate;Disodium silicate;Sodium silicate;Sodium silicon oxide
CAS NO.：6834-92-0
Empirical Formula: Na2O3Si
Molecular Weight: 122.06
MDL number: MFCD00003492
EINECS: 215-687-4
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 1089°C |
| Density | 2.4 |
| refractive index | nD25 (glass) 1.520 |
| solubility | soluble in cold H2O; reachot H2O; insoluble in ethanol |
| form | powder |
| Specific Gravity | 2.61 |
| color | White |
| PH | 11(1 mM solution);11.91(10 mM solution);12.62(100 mM solution) |
| Water Solubility | Soluble in cold water. Hydrolyzes in hot water. Insoluble in acids, alcohol and salt solutions. |
| Hydrolytic Sensitivity | 0: forms stable aqueous solutions |
| Merck | 14,8642 |
| Stability: | hygroscopic |
| InChIKey | NTHWMYGWWRZVTN-UHFFFAOYSA-N |
| CAS DataBase Reference | 6834-92-0(CAS DataBase Reference) |
| NIST Chemistry Reference | Sodium silicate(6834-92-0) |
| EPA Substance Registry System | Sodium metasilicate (6834-92-0) |
Description and Uses
Laundry, dairy, and metal cleaning; floor clean- ing; base for detergent formulations; bleaching aid; deinking paper. Also available as the pentahydrate whose properties are mp 72.2C, total Na 2 O content 29.3%, total Na 2 O in active form 27.8%, d 1.75 or 55 lb/cu ft.
Safety
| Symbol(GHS) |   GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H290-H314-H335 |
| Precautionary statements | P234-P260-P271-P280-P303+P361+P353-P305+P351+P338 |
| Hazard Codes | C |
| Risk Statements | 36/37/38-37-34 |
| Safety Statements | 26-45-36/37/39-13-24/25 |
| RIDADR | UN 3253 8/PG 3 |
| WGK Germany | 1 |
| RTECS | VV9275000 |
| F | 3 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 28391910 |
| Hazardous Substances Data | 6834-92-0(Hazardous Substances Data) |
