Is NMP flammable?

Is NMP flammable?

Hazard Class: 3 (Flammable) 1-Methyl-2-Pyrrolidone is a COMBUSTIBLE LIQUID. Use dry chemical, CO2, water spray or alcohol-resistant foam as extinguishing agents. POISONOUS GASES ARE PRODUCED IN FIRE, including Nitrogen Oxides. Use water spray to keep fire-exposed containers cool.

What is the flash point of NMP?

N-methyl-2-pyrrolidone appears as a clear colorless liquid with a “fishlike” odor. Denser than water. Flash point 199°F.

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.

Why is NMP a good solvent?

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. Additionally, the polar nature and the low surface tension of NMP makes it an excellent cleaning medium and paint stripping solvent.

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. The most effective fast-evaporating solvent for these resins is DMF, but that solvent has serious safety issues.

Is NMP hazardous?

Based on the animal tests, you should treat NMP as a potential human reproductive hazard. Overexposure to NMP irritates the eyes, skin, nose, and throat. It can also affect the central nervous system or brain causing symptoms of drunkenness similar to the effects of drinking alcohol.

What is the pH of NMP?

The typical pH of NMP is 8.0 to 9.5. It is a highly polar colorless liquid with a mild amine odor. NMP is a very stable, water-soluble cleaner, with a high flashpoint (196 F [91 C]) and low vapor pressure (0.24 mm Hg/68 F [20 C]).

Is NMP a VOC?

NMP is considered a volatile organic compound (VOC) and is a California Prop 65 substance.

How do you get rid of NMP reaction?

You can try to extract your product from reaction mixture using low BP. solvent that has ability to dissolve your product then evaporate the solvent, or chose solvent to extract NMP from reaction mixture. Also you can use column chromatography for separation..

Is NMP corrosive?

It is highly polar and miscible with most organic solvents (alcohols, ethers, ketones, aromatic hydrocarbons, chlorinated hydrocarbons, etc.). Organic and inorganic substances are highly soluble in it. It is chemically and thermally stable, and not corrosive.

How is NMP /N-methyl-2-pyrrolidone made?

Large-scale production of NMP /N-methyl-2-pyrrolidone/ is predominantly carried out by reacting gamma-butyrolactone with an excess of pure or aqueous methylamine in a high-pressure tube reactor (6-12 MPa). The reaction is exothermic and often run under adiabatic conditions with reactor temperatures in the range of 250-400 °C.

Do lithium batteries contain NMP during the manufacturing process?

Most lithium-ion batteries manufacturing processes But high performance products are are using NMP as a solvent based on the usage of this solventof the electrodes binder totally removed, due to stringent solvation and dry atmosphere requirements. Lithium batteries do not contain NMP. , during the manufacturing process.

Is NMP hygroscopic?

NMP (N-Methylpyrrolidone) is highly hygroscopic and easily absorbs moisture in the air. Pay attention to sealing and moisture-proof. It is chemically inactive and non-corrosive to other metals such as carbon steel and aluminum, except for copper.