Name | Sodium metasilicate |
Synonyms | WATER GLASS SILICA STANDARD SODIUM-M-SILICATE Sodium metasilicate SODIUM METASILICATE SODIUM SILICATE, META disodium metasilicate SODIUM SESQUISILICATE DISODIUM TRIOXOSILICATE Sodium Metasilicate Anhydrous SODIUM METASILICATE N-HYDRATE |
CAS | 6834-92-0 |
EINECS | 215-687-4 |
InChI | InChI=1/2Na.HO3Si/c;;1-4(2)3/h;;4H/q2*+1;-2 |
InChIKey | NTHWMYGWWRZVTN-UHFFFAOYSA-N |
Molecular Formula | Na2O3Si |
Molar Mass | 122.06 |
Density | 2.4 |
Melting Point | 1089°C |
Water Solubility | Soluble in cold water. Hydrolyzes in hot water. Insoluble in acids, alcohol and salt solutions. |
Appearance | powder |
Specific Gravity | 2.61 |
Color | White |
Merck | 14,8642 |
PH | 11(1 mM solution);11.91(10 mM solution);12.62(100 mM solution) |
Stability | hygroscopic |
Sensitive | 0: forms stable aqueous solutions |
Refractive Index | nD25 (glass) 1.520 |
Physical and Chemical Properties | Character white square crystal. melting point 40~48 ℃ relative density 0.7~0.9 solubility: soluble in water and dilute alkali, insoluble in alcohol and acid. The aqueous solution is alkaline. |
Use | Used in textile, electroplating, packing and catalyst |
Hazard Symbols | C - Corrosive |
Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R37 - Irritating to the respiratory system R34 - Causes burns |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S13 - Keep away from food, drink and animal foodstuffs. S24/25 - Avoid contact with skin and eyes. |
UN IDs | UN 3253 8/PG 3 |
WGK Germany | 1 |
RTECS | VV9275000 |
FLUKA BRAND F CODES | 3 |
TSCA | Yes |
HS Code | 28391910 |
Hazard Class | 8 |
Packing Group | III |
Raw Materials | Sodium silicate Sodium hydroxide |