Organic carbonates

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  • In chemistry, a carbonate is a salt of carbonic acid, characterized by the presence of the carbonate ion.
  • The name may also mean an ester of carbonic acid, an organic compound containing the carbonate group.
  • Carbonate minerals are extremely varied and ubiquitous in chemically-precipitated sedimentary rock. The most common are calcite or calcium carbonate, CaCO3, the chief constituent of limestone, dolomite, a calcium-magnesium carbonate CaMg(CO3)2, and siderite, or iron (II) carbonate, FeCO3, an important iron ore.
  • Sodium carbonate ("soda" or "natron") and potassium carbonate("potash") have been used since antiquity for cleaning and preservation, as well as for the manufacture of glass.
  • Carbonates are widely used in industry, e.g. in iron smelting, as a raw material for Portland cement and lime manufacture, in the composition of ceramic glazes, and more.
  • In organic chemistry a carbonate can also refer to a functional group within a larger molecule that contains a carbon atom bound to three oxygen atoms, one of which is double bonded.
  • These compounds are also known as organocarbonates or carbonate esters, and have the general formula ROCOOR′, or RR′CO3. Important organocarbonates include dimethyl carbonate, the cyclic compounds ethylene carbonate and propylene carbonate, and the toxic triphosgene.
  • Propylene Carbonate can be used as VOC exempt solvent in paints and coatings as a tail solvent. PC is a slow evaporating polar solvent. Alone or combined with other solvents, Propylene Carbonate is effective as a hard surface cleaner, polymer/resin cleaner, fiberglass, polyester and polyurethane cleaner.
  • Propylene Carbonate can be used for derivative chemistries such as carbamate formation, hydroxy alkyation, transesterification and others.

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