| Identification | |
| Name: | Sodium metasilicate |
| Synonyms: | Silicic acid;disodium salt (8CI,9CI);Blue Meta;Crystamet;Disodium metasilicate;Disodium monosilicate;Drymet 59;Metso 2048;Metso 510;Metso Pentabead 20;Metso-Beads 2048;Orthosil;P 84 (silicate);Purifeed6N;SMS;SP 20;SP 20 (silicate);Silicon sodium oxide (SiNa2O3);Simet 5G;Simet A;Simet AG;Simet AP;Simet GA 5;Sodium Metasilicate Anhydrous GranularD;Sodium metasilicate (Na2SiO3);Sodium silicate(Na2SiO3);Sodium silicon oxide (Na2SiO3);Starso; |
| CAS: | 6834-92-0 |
| EINECS: | 229-912-9 |
| Molecular Formula: | Na2O3Si |
| Molecular Weight: | 123.07118 |
| InChI: | InChI=1/2Na.HO3Si/c;;1-4(2)3/h;;4H/q2*+1;-2 |
| Molecular Structure: |  |
| Properties | |
| Transport: | UN 3253 |
| Density: | 2.4 g/cm3 |
| Solubility: | VERY SLIGHTLY SOL OR ALMOST INSOL IN COLD WATER; LESS READILY SOL IN LARGE AMT OF WATER THAN IN SMALL AMT; ANHYD DISSOLVE WITH MORE DIFFICULTY THAN HYDRATE IN WATER GLASS FORM SOL IN STEAM UNDER PRESSURE; PARTIALLY MISCIBLE WITH PRIMARY ALC & KETONES; MISCIBLE WITH SOME POLYHYDRIC ALC INSOL IN ALC, POTASSIUM, & SODIUM SALTS BROUGHT INTO SOLN BY HEATING WITH WATER UNDER PRESSURE; SILICATES CONTAINING MORE SODIUM DISSOLVE MORE READILY |
| Appearance: | white granules |
| Specification: |
? Sodium metasilicate , with CAS number of 6834-92-0, can be called Crystamet ; Disodium metasilicate ; Metso beads 2048 ; Silicic acid (H2SiO3), disodium salt ; Sodium metasilicate, anhydrous ; Water glass . Sodium metasilicate (CAS NO.6834-92-0) is used along with magnesium silicate, in muffler repair and fitting paste.It can be used to seal leaks at the head gasket and has been widely used as a general purpose cement, but especially for applications involving cementing objects exposed to heat or fire. It has also been used as a general purpose paper cement. Sodium silicate was also used as an egg preservation agent in the early 20th Century with large success. It was used as a timber treatment for pressure-treated wood in the 19th century and as a water treatment in waste water treatment plants. |
| Report: |
Reported in EPA TSCA Inventory. |
| Packinggroup: | III |
| Color: | COLORLESS TO WHITE OR GRAYISH-WHITE, CRYSTAL-LIKE PIECES OR LUMPS LUMPS OF GREENISH GLASS; WHITE POWDERS; LIQUIDS CLOUDY OR CLEAR |
| Safety Data | |
| Hazard Symbols |
C:Corrosive
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