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Sodium carbonate Structure

Sodium carbonate

Chemical Properties

Melting point 851 °C (lit.)
Boiling point 1600°C
Density  2.53
refractive index  1.535
storage temp.  15-25°C
solubility  H2O: 1 M at 20 °C, clear, colorless
form  Solid
color  White
Specific Gravity 2.532
PH 10.52(1 mM solution);10.97(10 mM solution);11.26(100 mM solution);
pka (1) 6.37, (2) 10.25 (carbonic (at 25℃)
Water Solubility  22 g/100 mL (20 ºC)
λmax λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
Sensitive  Hygroscopic
Merck  14,8596
BRN  4154566
Stability Stable. Incompatible with powdered alkaline earth metals, aluminium, organic nitro compounds, fluorine, alkali metals, nonmetallic oxides, concentrated sulfuric acid, oxides of phosphorus.
CAS DataBase Reference 497-19-8(CAS DataBase Reference)
FDA 21 CFR 184.1742; 582.1742; 173.310; 310.545
Substances Added to Food (formerly EAFUS) SODIUM CARBONATE
SCOGS (Select Committee on GRAS Substances) Sodium carbonate
EWG's Food Scores 1
NIST Chemistry Reference Sodium carbonate(497-19-8)
Pesticides Freedom of Information Act (FOIA) Sodium carbonate
EPA Substance Registry System Sodium carbonate (497-19-8)
Cosmetics Info Sodium Carbonate


Signal wordWarning
Hazard statements H319
Precautionary statements P264-P280-P305+P351+P338-P337+P313
Hazard Codes  Xn,Xi
Risk Statements  32-36-51/53-36/37/38-41-37/38
Safety Statements  36/37-26-22-36-39
WGK Germany  2
RTECS  XN6476000
HS Code  28362000
Hazardous Substances Data 497-19-8(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 4090 mg/kg
NFPA 704:
2 1

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