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| Product Name: | Sodium carbonate | Other Name: | Carbonic acid sodium salt (1:2);Carbonic acid disodium salt;Sodium carbonate;Sodium carbonate (2:1);Soda ash;Soda;Sodium carbonate (Na2(CO3));Disodium carbonate;Disodium carbonate (Na2CO3);Bisodium carbonate;Carbonic acid sodium salt;Soda,calcined;Calcined soda;Sodium carbonate,anhydrous;Carbonic acid,disodium salt;Na-X;Snowlite 1;V Soda;V 20N;Soda Ash Light 4P;Dynamar L 13890;Suprapur 6395;Light Ash;Dense Ash;Soda Ash Dense;Dynamar RC 5251Q;Soda Light;Lime ash;Soda Ash Light;Dynamar 5251Q;1332-57-6;1314087-39-2;1977561-09-3 |
| CAS No.: | 497-19-8 | Molecular Formula: | CH2O3.2Na |
| InChIKeys: | InChIKey=RRQYGDABVATUBZ-UHFFFAOYSA-N | Molecular Weight: | 105.98800 |
| Exact Mass: | 105.96400 | EC Number: | 231-420-4 |
| UNII: | 45P3261C7T | ICSC Number: | 1135 |
| DSSTox ID: | DTXSID1029621 | NCI Thesaurus Code: | C47721 |
| Color/Form: | Grayish-white powder or lumps containing up to 99% sodium carbonate|White hygroscopic powder|White … small crystals or monoclinic powder | HScode: | 2836200000 |
| Categories: | Acidity Regulators |
| PSA: | 63.19000 | XLogP3: | -2.44700 |
| Appearance: | White non odor powder | Density: | 3″>2.53 g/cm3 |
| Melting Point: | 851 °C | Boiling Point: | 1600°C |
| Flash Point: | 169.8ºC | Refractive Index: | 1.535 |
| Water Solubility: | H2O: 22 g/100 mL (20 ºC) | Storage Conditions: | Low temperature, ventilation, drying |
| Toxicity: | LD50 orally in Rabbit: 4090 mg/kg | Odor: | Odorless |
| Taste: | Tasteless | PH: | Aqueous solutions are strongly alkaline. At 25 °C, the pH of 1, 5 and 10 wt% sodium carbonate solutions are 11.37, 11.58 and 11.70, respectively. |
| Experimental Properties: | Begins to lose carbon dioxide at 400 °C; hygroscopic; on exposure to air it will gradually absorb 1 mole water, about 15%. Decomposed by acids with effervescence. Combines with water with evolution of heat.|Undergoes monoclinic (beta) to monoclinic (alpha) transition at 3 °C and monoclinic (beta) to hexagonal (alpha) transition at 4 °C.|Enthalpy of fusion: 29.7 kJ/mol at 856 °C|Colorless orthorhombic crystals; MP: 100 °C; density: 2.25 g/cu cm; solubility: 30.7 g/100 g water at 25 °C; insoluble in ethanol /Sodium carbonate monohydrate/|Odorless; white, small crystals or crystalline powder; alkaline taste; density 1.55. MP: 109 °C (loses water) 851 °C. Soluble in water and glycerol; insoluble in alcohol /Sodium carbonate monohydrate/|Othogonal crystals; density 2.25 g/cu cm; Mohs hardness 1.3; index of refraction: 1.420, 1.506, 1.524 /Thermonatrite (monohydrate)/|Rhombic bipyramidal crystals; density 1.51; MP 32 °C, minus water, solubility 16.90 g/100 cc cold water, 33.9 g/100 cc at 35 °C /Sodium carbonate heptahydrate/|Colorless crystals; MP: 34 °C; density: 1.46 g/cu cm; solubility: 30.7 g/100 g water at 25 °C; insoluble in ethanol /Sodium carbonate decahydrate/|Heat of Formation (kJ/mol at 0 °C): -1131 (soda ash); -1459 (monohydrate); -3201 (sesquihydrate); -4082 (decahydrate)|Incompatibilities: acids, acid salts, and acidic prepn cause its decomp.|White, needle-shaped crystals. Density: 2.112. MP: decomposes. Soluble in water; less alkaline than sodium carbonate /Sodium sesquicarbonate/|White crystals, flakes or crystaline powder /Sodium sesquicarbonate/ |
Classification of the substance or mixture
Eye irritation, Category 2
GHS label elements, including precautionary statements
| Pictogram(s) |  |
|---|---|
| Signal word |
Warning |
| Hazard statement(s) |
H319 Causes serious eye irritation |
| Precautionary statement(s) | |
| Prevention |
P264 Wash … thoroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/… |
| Response |
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
| Storage |
none |
| Disposal |
none |
Other hazards which do not result in classification
no data available
Precautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Dry. Well closed. Separated from incompatible materials. See Chemical Dangers.