NMP Functional Properties

Chemical property: relatively stable in neutral solution. After 8 hours in 4% sodium hydroxide solution, 50%~70% will be hydrolyzed. Hydrolysis will occur gradually in concentrated hydrochloric acid to generate 4-methylaminobutyric acid. Ketals or thiopyrrolidone can be formed due to the reaction of carbonyl group.

NMP is miscible with water and soluble in most organic solvents such as ether and acetone. It can dissolve most organic and inorganic compounds, polar gases, natural and synthetic polymer compounds.

In the presence of alkali catalyst, alkylation reaction will take place in the third place when it reacts with olefins. N-methylpyrrolidone is weakly alkaline and can generate hydrochloride. It forms an adduct with heavy metal salts. For example, it is heated with nickel bromide to 150 ℃ to produce NiBr2 (C5H9ON) 3, with a melting point of 105 ℃.

NMP is a polar solvent with strong selectivity and good stability. It has the advantages of low toxicity, high boiling point, strong solubility, nonflammable, biodegradable, recyclable, safe to use, and suitable for a variety of formulations.

When operating, everyone should pay attention to that it should be used in an open place or a ventilated place, and try to operate in a downwind place instead of inhaling steam; Avoid contact with eyes, body, skin, clothes, etc., and mainly wear protective equipment during operation; Avoid leakage, spillage, and careless lowering during operation to prevent physical damage. N-methylpyrrolidone NMP is generally stored in a cool, ventilated and sunless environment, in a sealed container, away from heat sources, and away from oxidizing and flammable materials.

In general, N-methylpyrrolidone is not only an important basic chemical raw material, but also an important raw material in the new energy industry. The used dirty waste methyl pyrrolidone can be recycled by solvent recovery machine and vacuum decompression system. Because of its high boiling point, direct recovery cannot be used. Vacuum decompression can reduce the recovery heating temperature, ensure the recovery quality, and improve the recovery safety factor. NMP is a solvent with strong selectivity and good stability. It has the advantages of high boiling point, strong solubility, nonflammable, biodegradable, recyclable, etc.