Sodium carbonate anhydrous , SP , 497-19-8
Synonym(s):
Sodium carbonate;Soda ash;Soda;Sodium carbonate solution;anhydrous soda
CAS NO.：497-19-8
Empirical Formula: CH2O3.2Na
Molecular Weight: 105.99
MDL number: MFCD00003499
EINECS: 231-867-5
| Pack Size | Price | Stock | Quantity |
| 25G | RMB71.20 | In Stock |
|
| 100G | RMB231.20 | In Stock |
|
| 500G | RMB1143.20 | In Stock |
|
| others | Enquire |
PRODUCT 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 |
| Specific Gravity | 2.532 |
| color | White |
| Odor | at 100.00?%. odorless |
| 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) |
| Sensitive | Hygroscopic |
| λmax | λ: 260 nm Amax: 0.01 λ: 280 nm Amax: 0.01 |
| Merck | 14,8596 |
| BRN | 4154566 |
| Dielectric constant | 5.3（Ambient） |
| Stability: | Stable. Incompatible with powdered alkaline earth metals, aluminium, organic nitro compounds, fluorine, alkali metals, nonmetallic oxides, concentrated sulfuric acid, oxides of phosphorus. |
| InChIKey | CDBYLPFSWZWCQE-UHFFFAOYSA-L |
Description and Uses
Sodium carbonate is known as soda ash or washing soda and is a heavily used inorganic compound. Approximately 45 million tons of soda ash are produced globally both naturally and synthetically. Soda ash is obtained naturally primarily from the mineral trona, but it can also be obtained from nahcolite (NaHCO3) and salt brine deposits. Trona is a freshwater sodium carbonate-bicarbonate evaporite, with the formula Na3CO3HCO3 .2H2O. The largest known deposit of trona is located in the Green River area of Wyoming, and other large deposits are found in Egypt’s Nile Valley and California’s Searles basin around the city of Trona. Soda ash is produced from mined trona by crushing and screening the ore and then heating it. Th is produces a soda ash mixed with impurities. Pure soda ash is obtained by dissolving the product and precipitating impurities combined with filtering processes.
Sodium Carbonate is an alkali that exists as crystals or crystalline powder and is readily soluble in water. it has numerous functions: an antioxidant, a curing and pickling agent, a flavoring agent, a processing aid, a sequestrant, and an agent for ph control. it is used in instant soups to neutralize acidity. it is used in alginate water des- sert gels to sequester the calcium, allowing the alginate to solubilize. it is also used in puddings, sauces, and baked goods.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| 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 |
| F | 3 |
| TSCA | Yes |
| HS Code | 28362000 |
| Toxicity | LD50 orally in Rabbit: 4090 mg/kg |
