Main use: An important intermediate for the synthesis of vitamin B, as well as an intermediate for the synthesis of 3,4-disubstituted pyridine and 5- (β - hydroxyethyl) -4-methylthiazole.

At present, from the late 1990s to the beginning of this century, Nanjing Jinlong and our company have successively built 1000 ton GBL/NMP production facilities, and China has begun to independently produce NMP. After 2008, the domestic production capacity of NMP has accelerated, and many large NMP production enterprises have the conditions to have a production capacity of 10000 tons.

Gamma butyrolactone (GBL) is a solvent with high boiling point, strong solubility, good electrical properties, and stability. The product is transparent, oily, and completely miscible with water. It is soluble in ethanol, ether, benzene, and acetone, and can dissolve many organic and inorganic compounds. The product has high safety, low toxicity, excellent stability, and conductivity.

N-methyl-2-pyrrolidone (NMP) is an N-methyl derivative of 2-pyrrolidone, belonging to nitrogen heterocyclic compounds with the molecular formula C5H9O. It is a high boiling point solvent that is colorless to light yellow transparent liquid