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Sodium metasilicate Structure

Sodium metasilicate

Chemical 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
color  White
Specific Gravity 2.61
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)
FDA 21 CFR 184.1769a; 173.310
Substances Added to Food (formerly EAFUS) SODIUM METASILICATE
EWG's Food Scores 3
FDA UNII 052612U92L
NIST Chemistry Reference Sodium silicate(6834-92-0)
EPA Substance Registry System Sodium metasilicate (6834-92-0)

Safety

Symbol(GHS)
Signal wordDanger
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
3
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  28391910
Hazardous Substances Data 6834-92-0(Hazardous Substances Data)
NFPA 704:
1
3 0

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