How to measure the concentration of N-methylpyrrolidone?

N-methylpyrrolidone is a polar non proton transfer solvent. It has the advantages of low toxicity, high boiling point, outstanding solubility, strong selectivity, and good stability.

NMP is widely used in aromatic hydrocarbon extraction, purification of acetylene, olefins, and dienes, solvent for polyvinylidene fluoride, electrode auxiliary materials for lithium-ion batteries, desulfurization of synthetic gas, refining of lubricating oil, antifreeze agents for lubricating oil, olefin extraction agents, solvents for polymerization of insoluble engineering plastics, agricultural herbicides, insulation materials, integrated circuit manufacturing, cleaning of precision instruments and circuit boards in the semiconductor industry, PVC tail gas recovery, cleaning agents Dye additives, dispersants, etc.

1-methyl-2- pyrrolidinone is also used as a solvent for polymers and as a medium for polymerization reactions, such as engineering plastics and aramid fibers. Additionally, it can be used in fields such as pesticides, pharmaceuticals, and cleaning agents.

The online concentration meter uses the principle of refraction to measure the refractive index of the solution, which has an excellent correspondence with the concentration of N-methyl -2-pyrrolidinone solution. Finally, the actual concentration of the solution can be obtained through conversion. The online concentration meter is a precision instrument with a compact structure, simple and convenient operation, and can monitor solution concentration in real-time 24 hours a day.

Online concentration meters can achieve continuous online detection, saving costs and reducing errors; Improving the level of manual automation and product quality in factories has become a choice for many production enterprises and factories.