Calcium silicate
Chemical compound naturally occurring as the mineral larnite / From Wikipedia, the free encyclopedia
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For the metasilicate, see Calcium metasilicate.
Calcium silicate is the chemical compound Ca2SiO4, also known as calcium orthosilicate and is sometimes formulated as 2CaO·SiO2. It is also referred to by the shortened trade name Cal-Sil or Calsil. It occurs naturally as the mineral larnite.
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"Micro-cell" redirects here. For the battery type, see Micro cell.
Quick Facts Names, Identifiers ...
Names | |
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Preferred IUPAC name
Calcium silicate | |
Systematic IUPAC name
Dicalcium silicate | |
Other names
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Identifiers | |
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3D model (JSmol) |
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ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.014.282 |
EC Number |
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E number | E552 (acidity regulators, ...) |
KEGG |
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MeSH | Calcium+silicate |
PubChem CID |
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UNII |
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CompTox Dashboard (EPA) |
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Properties | |
Ca2O4Si | |
Molar mass | 172.237 g·mol−1 |
Appearance | White crystals |
Density | 2.9 g/cm3 (solid)[1] |
Melting point | 2,130[2] °C (3,870 °F; 2,400 K) |
0.01% (20 °C)[1] | |
Thermochemistry | |
Std molar entropy (S⦵298) |
84 J/(mol·K)[3] |
Std enthalpy of formation (ΔfH⦵298) |
−1630 kJ/mol[3] |
Pharmacology | |
A02AC02 (WHO) | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards |
Irritant |
NFPA 704 (fire diamond) | |
Flash point | Not applicable |
NIOSH (US health exposure limits): | |
PEL (Permissible) |
TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)[1] |
REL (Recommended) |
TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)[1] |
IDLH (Immediate danger) |
N.D.[1] |
Safety data sheet (SDS) | [4] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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