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Glossary - NMP (N-Methyl-2-pyrrolidone)

A chemical compound with 5-membered lactam structure (other names for this compound are "1-methyl-2-pyrrolidone," "N-methyl-2-pyrrolidinone," "m-pyrrole," and "pharmasolve").  It is a clear-to-slightly-yellow liquid miscible with water and solvents like ethyl acetate, chloroform, benzene and lower alcohols or ketones.

It also belongs to the class of dipolar aprotic solvents which includes also dimethylformamide, dimethylacetamide and dimethyl sulfoxide.  N-Methylpyrrolidone is used to recover pure hydrocarbons while processing petrochemicals (such as the recovery of 1,3-butadiene using NMP as an extractive distillation solvent) and in the desulfurization of gases.

Due to its good solvency properties, N-methyl-2-pyrrolidone is used to dissolve a wide range of chemicals, especially in the polymers field.  It is also used as a solvent for surface treatment of textiles, resins and metal coated plastics, or as a paint stripper.


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