N,N-Dimethylformamide

Main purpose

[Application 1] It is used as an analytical reagent and a solvent for vinyl resin and acetylene.

[Application 2] It is an excellent organic solvent, used as the solvent of polyurethane, polyacrylonitrile and polyvinyl chloride, as well as the raw material of extractant, medicine and pesticide chlordimeform.

[Application III] Dimethylformamide is not only a widely used chemical raw material, but also an excellent solvent. It can be used for wet spinning of synthetic fibers such as polyacrylonitrile fiber and synthesis of polyurethane; Used for plastic film making; It can also be used as paint remover to remove paint; It can also dissolve some pigments with low solubility, making the pigments have the characteristics of dyes. Dimethylformamide can be used for aromatics extraction, separation and recovery of butadiene from C4 fraction and separation and recovery of isoprene from C5 fraction, and also can be used as an effective reagent for separation of non hydrocarbon components from paraffin. It has good selectivity for the solubility of isophthalic acid and terephthalic acid: the solubility of isophthalic acid in dimethylformamide is higher than that of terephthalic acid. The two can be separated by solvent extraction or partial crystallization in dimethylformamide. In petrochemical industry, dimethyl formamide can be used as gas absorbent to separate and refine gas. In organic reactions, dimethylformamide is not only widely used as a reaction solvent, but also an important intermediate in organic synthesis. It can be used to produce chlordimeform in pesticide industry; In the pharmaceutical industry, it can be used to synthesize sulfadiazine, doxycycline, cortisone, vitamin B6, iodoside, Qubianjing, thiadiazine, N-formyl sarcolysin, antineoplastic acid, methoxyaroma mustard, Bianzao mustard, cyclohexylidene nitrourea, furfurouracil, hemostatic cyclic acid, beclomethasone, megestrol, bilirubin, chlorpheniramine, etc. Dimethylformamide plays a catalytic role in hydrogenation, dehydrogenation, dehydration and dehydrohalogenation, reducing reaction temperature and improving product purity.