Sodium carbonate

Sodium carbonate

  • CAS No.: 497-19-8
  • Molecular Formula: Na2CO3
  • Agency: IP, USP
  • Certification: FSSAI, HALAL

Sujata Nutri Pharma is one of the leading manufacturers and exporters of Sodium carbonate CAS no. 497-19-8.

General description

Sodium carbonate is a white salt. It is hygroscopic, soluble in water, and soluble in some polar organic solvents like glycerol and ethylene glycol, but insoluble in acetone and dry alcohols. One of only a few water-soluble carbonate salts, sodium carbonate is frequently used as a source for the carbonate anion or carbon dioxide.
Sodium carbonate is made industrially by the Solvay process using brine and limestone. First carbon dioxide is generated by calcining limestone (calcium carbonate). Then carbon dioxide is bubbled through brine (concentrated NaCl) treated with ammonia to precipitate sodium bicarbonate. Heating the sodium bicarbonate to 200 C produces sodium carbonate, water, and carbon dioxide.

Application

Sodium carbonate has many common applications. It is used in the manufacture of soap and paper because it serves as a moderate base. It is used to manufacture of sodium-containing compounds like borax and it is used to soften water and cleaning scale from hard water.

Sodium carbonate is also used in glass-making as a flux for silica to lower the melting point. So called soda-lime glass has been the most common form of glass for centuries. Sodium carbonate is often used a source of carbonate to prepare metal carbonates, which can be calcined to prepare nanostructured metal oxides, such as cobalt oxides, metal-organic frameworks (MOF), and metal nanoparticles.

Sodium carbonate is also used as a basic catalyst for the synthesis of carbon aerogels, especially in the sol-gel polycondensation of formaldehyde and resorcinol. Sodium carbonate is often used in organic chemistry as a moderately strong base. In many instances it is preferable to sodium hydroxide as a base because it is milder and safer to handle.

Some common uses of sodium carbonate in organic chemistry:

Base of choice for palladium-catalyzed reactions like Suzuki couplings.
Used in reactions, especially alkylation reactions, that require a base to neutralize acids that form during reactions.
Base for aqueous basic washes of organic layer during workup.
Standard for titrations since it is easy to weigh and relatively safe to handle.
Sodium carbonate is a widely used reagent in biochemistry as a buffer component in chromatography, capillary electrophoresis, and enzyme catalysis. Scientists have found that cold solutions of sodium carbonate are ideal for the isolation of cell membranes, membrane proteins, and hydrophobic proteins.

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