| Sodium silicate | |
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| IUPAC name | |
| Other names | Waterglass Liquid glass E550 |
| Identifiers | |
| CAS number | [] |
| PubChem | |
| EC number | |
| RTECS number | VV9365000 |
| Identifiers | |
| CAS number | [] |
| Identifiers | |
| CAS number | [] |
| Properties | |
| Molecular formula | Na2SiO3 |
| Molar mass | 122.06 g/mol (anhydrous) 212.14 g/mol (pentahydrate) |
| Appearance | colorless solid |
| Density | 2.4 g/cm3, solid |
| Melting point |
1088 °C (anhydrous) |
| Solubility inwater | Soluble |
| Refractive index(nD) | 1.52 (anhydrous) 1.456 (pentahydrate) |
| Thermochemistry | |
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Std enthalpy of formationΔfH |
−1519 kJ/mol |
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Standard molar entropy S |
113.8 J K−1 mol−1 |
| Hazards | |
| MSDS | ICSC 1137 |
| EU Index | 014-010-00-8 |
| EU classification | Corrosive (C) |
| R-phrases | R34, R37 |
| S-phrases | (S1/2), S13, S24/25,S36/37/39, S45 |
| NFPA 704 |
 0
3
0
|
| Related compounds | |
| Other anions |
Sodium carbonate Sodium germanate Sodium stannate Sodium plumbate |
| Other cations | Potassium silicate |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
| Infobox references | |