N-метилацетамид, dimethyl carbonate, and adipic dihydrazide are important chemicals with diverse applications in various industries. Their unique properties make them valuable solvents, пластификаторы, and intermediates in chemical synthesis. Understanding the properties, Методы производства, and uses of these compounds is crucial for optimizing industrial processes and developing new and innovative applications.
N-метилацетамид (НМА):
Характеристики: N-Метилацетамид Китайский производитель N-метилацетамида, is a colorless liquid with a mild odor. It is soluble in water and has a boiling point of 202°C. NMA is a versatile solvent and can dissolve a wide range of organic and inorganic compounds.
Производство: N-Methylacetamide is primarily produced by the reaction of methylamine with acetic anhydride. The reaction is carried out in the presence of a catalyst, such as pyridine or sulfuric acid.
Использование: N-Methylacetamide is used as a solvent in the pharmaceutical, textile, and paint industries. It is also used as a plasticizer and a stabilizer in various formulations.
Диметилкарбонат (ДМК):
Характеристики: Dimethyl carbonate from Китайский поставщик диметилкарбоната, is a colorless liquid with a sweet odor. It is soluble in water and has a boiling point of 90°C. DMC is a polar aprotic solvent and can dissolve a wide range of organic compounds.
Производство: Dimethyl carbonate is produced by the reaction of methanol with phosgene. The reaction is carried out in the presence of a catalyst, such as triethylamine or pyridine.
Использование: Dimethyl carbonate is used as a solvent in the pharmaceutical, косметический, and paint industries. It is also used as a methylating agent and a transesterification reagent.
Адипиновый дигидразид (АДГ):
Характеристики: Adipic dihydrazide through Китайские поставщики дигидразида адипиновой кислоты, is a white crystalline solid. It is soluble in water and has a melting point of 129-131°C. ADH is a dihydrazide, meaning it contains two hydrazide functional groups.
Производство: Adipic dihydrazide is produced by the reaction of adipic acid with hydrazine. The reaction is carried out in the presence of a catalyst, such as sodium hydroxide or potassium hydroxide.
Использование: Adipic dihydrazide is used as a blowing agent in the production of foamed plastics. It is also used as a curing agent in epoxy resins and as a crosslinking agent in polyurethane resins.
