Is N methyl 2 pyrrolidone hazardous?

► Exposure to 1-Methyl-2-Pyrrolidone can cause headache, stomach pain, nausea and vomiting. No occupational exposure limits have been established for 1-Methyl-2-Pyrrolidone. However, it may pose a health risk.

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How do you get rid of NMP solvent?

Centrifugal evaporators that can remove NMP are available, however they are expensive and no system, can remove 100% of any solvent. Removing NMP under vacuum requires a good, oil free vacuum pump of the scroll style, a diaphragm pump is not strong enough, a cold trap with sub zero cabability, and a heated system.

Is NMP acidic or basic?

NMP is stable under neutral conditions, but it is easy to open loop under acidic or alkaline conditions to form acid and other products, and both alkali and temperature have effects on the hydrolysis of NMP[9].

Why is NMP a good solvent?

It has a high flash point compared to similar solvents. The boiling point is high, the freezing point is low, and handling is easy. It is chemically and thermally stable, and not corrosive.

Is NMP banned?

The U.S. Environmental Protection Agency (EPA) describes NMP as a developmental toxicant. In 2017, EPA proposed to ban this chemical’s use in paint stripping but then shelved the proposal under pressure from industry and in 2021 officially withdrew the proposal.

Is NMP explosive?

Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Above 86°C explosive vapour/air mixtures may be formed. NO open flames.

Does NMP react with water?

Because of its hygroscopy, the water content in NMP is continuously increasing in humidity and it can be mixed with water in any proportion. The presence of water has a significant effect on the solvent properties of NMP, particularly on its selectivity and efficiency in a number of processes [6] .

Is N-methyl-2-pyrrolidone polar?

N-Methyl-2-pyrrolidone (NMP), C5H9NO, is a strongly polar (μ = 4.09 D)1 aprotic solvent that is a liquid at room temperature. NMP (Figure 1) exhibits a unique combination of physicochemical properties that have led to its frequent use as a solvent in a range of industrial applications.

Is NMP a carcinogen?

The chemical was non- carcinogenic in studies, and non-mutagenic in a majority of studies. Residential inhalation exposures to NMP are not expected because of its physical and chemical properties.

Is NMP regulated?

To address workplace exposures, in 2018, the European Chemicals Agency issued a regulation restricting the manufacture, use, and sale of all products, including paint strippers, containing NMP in concentrations greater than 0.3% unless certain conditions are met. The restriction went into effect May 9, 2020.

Is NMP conductive?

Typically EG and Ultra 2 grades of NMP are used for this market/application. It is used because of its high flashpoint, high solvency and low toxicity, it is water soluble with high electrical conductivity.

Is NMP carcinogenic?

Is NMP corrosive?

It is chemically and thermally stable, and not corrosive.

How volatile is NMP?

N-methylpyrrolidone (NMP) is an organic solvent. It is a volatile organic compound (VOC) and has a low vapor pressure of 0.29 mm Hg at 68 F (0.39 mbar at 20 C). It is combustible, with a flash point of 199 F (93 C).

Does NMP evaporate?

First, NMP is a very slow evaporating solvent. It has a boiling point of 202°C. A thin film of NMP requires over 15,000 s for 90% evaporation at room temperature.

Is NMP aprotic solvent?

Product description. N-Methyl-2-Pyrrolidone (NMP) is a high boiling, polar aprotic, low viscosity liquid. NMP has a good solvency for a wide range of organic and inorganic compounds and it is miscible with water at all temperatures and has a high chemical and thermal stability.

How do you make methyl 2 pyrrolidone?

N-Methyl-2-pyrrolidone (NMP) is prepared by preparing a mixture comprising monomethylamine, dimethylamine and trimethylamine and ammonia in a first process step by reacting ammonia with methanol at elevated temperature in the presence of a catalyst, separating 10 off the ammonia, reacting the mixture comprising the …

Is NMP volatile?

NMP is somewhat more volatile than other physical solvents so water washing of gaseous effluents is required to minimize solvent losses.

What is the NMR code for methyl-2-pyrrolidinone?

What does N-methyl 2 pyrrolidone look like?

N-methyl-2-pyrrolidone appears as a clear colorless liquid with a “fishlike” odor. Denser than water. Flash point 199°F. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion.

What is type 2 Pyrrolidinone 1-methyl-?

2-Pyrrolidinone, 1-methyl- is listed as a High Production Volume (HPV) chemical (65FR81686). Chemicals listed as HPV were produced in or imported into the U.S. in >1 million pounds in 1990 and/or 1994.

How common is 1-methyl-2-pyrrolidinone in US industrial effluent?

1-Methyl-2-pyrrolidinone was detected in 1 of 46 US industrial effluent samples (1). 1-Methyl-2-pyrrolidone is present in shale oil retort water (2,3). 1-Methyl-2-pyrrolidinone was found in shale retort water at a concentration of 3 mg/L (2).