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N-Methyl-2-Pyrrolidone (NMP) is a powerful solvent with broad solubility for resins and high chemical and thermal stability. It is completely soluble with water at all temperatures and is soluble with most organic solvents. N-Methyl-2-Pyrrolidone(CAS.NO:872-50-4), known for its low toxicity and solvent power, is rapidly becoming the product of choice for paint strippers, agricultural chemicals and process solvent applications. As a cosolvent, NMP can improve the gloss of floor polishes. Because of its high solvency and low volatility, NMP is used in automotive and industrial cleaners with solvents, including hydrocarbons, terpenes, propylene carbonate and propylene glycol ethers. It also has application in the electronic industry as a photoresist stripper. NMP can also be a replacement for 1,1,1-tricholoroethane (111T) in demanding applications, including the cleaning of metal parts. It is recyclable by distillation, readily biodegradable and essentially non-toxic to aquatic life. Because of its exceptional performance and relatively low toxicity, N-Methyl-2-pyrrolidone is the leading substitute for methylene chloride in paint strippers, graffiti removers and other products for consumer and industrial cleanup. NMP can be used safely and effectively in all its current applications when used with appropriate personal protective equipment. NMP 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 also used as a solvent for surface treatment of textiles, resins and metal coated plastics or as a paint stripper. It is utilized as a solvent in the commercial preparation of polyphenylene sulfide. In the pharmaceutical industry, N-methyl-2-pyrrolidone is used in the formulation for drugs by both oral and transdermal delivery routes. NMP is hygroscopic (picks up moisture), but stable under normal conditions. It will violently react with strong oxidizers such as hydrogen peroxide, nitric acid, sulfuric acid, etc. The primary decomposition products produce carbon monoxide and nitrogen oxide fumes. Excessive exposure or spillage should be avoided as a matter of good practice. Lyondell recommends wearing butyl gloves when using NMP. NMP should be stored in clean, mild phenolic-lined steel or alloy drums. Teflon and Kalrez have been shown to be suitable gasket materials.
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