SODA ASH 25 Kg
Sodium carbonate (also known as Carbonato Di Sodio), Na2CO3 is a sodium salt of carbonic acid. It most commonly occurs as a crystalline heptahydrate, which readily effloresces to form a white powder . Sodium carbonate is domestically well known for its everyday use as a water softener.
Sodium carbonate is used as a relatively strong base in various settings. For example, sodium carbonate is used as a pH regulator to maintain stable alkaline conditions necessary for the action of the majority of photographic film developing developing agents.
It is a common additive in municipal pools used to neutralize the acidic effects of chlorine and raise pH. In chemistry, it is often used as an electrolyte. This is because electrolytes are usually salt-based, and sodium carbonate acts as a very good conductor in the process of electrolysis. In addition, unlike chloride ions, which form chlorine gas, carbonate ions are not corrosive to the anodes. It is also used as a primary standard for acid-base titrations because it is solid and air-stable, making it easy to weigh accurately.
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Identification |
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CAS number |
497-19-8 |
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EC number |
207-838-8 |
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Properties |
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Molecular formula |
Na2CO3 |
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Molar mass |
105.9784 g/mol |
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Appearance |
White solid, hygroscopic |
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Odor |
Odorless |
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Density |
2.54 g/cm3 |
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Melting point |
851 °C |
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Boiling point |
1633 °C |
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Solubility in water |
7 g/100 mL (0 °C) |
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Solubility |
Insoluble in ethanol, acetone |
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Basicity (pKb) |
4.67 |
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Refractive index (nD) |
1.485 |
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EU classification |
Irritant (Xi) |
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R-phrases |
R36 |
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S-phrases |
(S2), S22, S26 |
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NFPA 704 |
0 1 1 |
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Flash point |
Non-flammable |
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LD50 |
4090 mg/kg (rat, oral) |
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