1. Physicochemical properties
Color odor status: colorless, transparent, light ammonia liquid
Toxicity: medium low flammability: Combustible
Density: 0.9445 volatile
Corrosivity: copper aluminum boiling point: 152.8 ℃
Decomposability: instability: good
Melting point: - 61 ℃; pH: neutral
Moisture absorption: strong spontaneous combustion point: 445 ℃
Viscosity: no deliquescence: no
Flash point: 57.78 ℃, solubility: miscible with water and most organic solvents
2. Various numbers: CAS: 68-12-2 HS: 2924191000 EINECS: 200-679-5
3. Application: main application: dimethylformamide (DMF) is an important chemical raw material and solvent with excellent performance. Dimethylformamide is not only a widely used chemical raw material, but also an excellent solvent. Dimethylformamide is a good solvent for a variety of polymers such as polyethylene, polyvinyl chloride, polyacrylonitrile and polyamide, It can be used for wet spinning of synthetic fibers such as polyacrylonitrile fiber and synthesis of polyurethane; For plastic film making; It can also be used as paint remover to remove paint; In the petrochemical industry, dimethylmethylamine can be used as a gas absorber to separate and refine gases. 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 the pesticide industry; In the pharmaceutical industry, it can be used to synthesize iodamine pyrimidine, doxycycline, cortisone, vitamin B6, etc. dimethylformamide also plays a catalytic role, reducing the reaction temperature and improving the purity of the product. Although it is a "universal solvent", it also has its limitations. It has a high boiling point, 152 ℃, which is more suitable as a solvent for many polymer materials. It should be carefully selected in organic synthesis, We often encounter that the solvent can not be removed. Moreover, it can be miscible with water. The simple method of recovering the solvent is very difficult to dehydrate. When we do not hesitate to cost, we wash it off with water
4. Production and preparation method: methanol and liquid ammonia catalytic method. See relevant data for details
5. Hazard category: class 3.3 flammable liquid
6, fire protection measures: use anti foam foam, carbon dioxide, dry powder and sand to extinguish fire.
7. First aid treatment: low toxicity. If it splashes on clothes and skin, take off your clothes, wash your skin with water, splash it into your eyes, lift your eyelids and wash them with flowing water or physiological salt water for 15 minutes. If inhaled, leave the site to a place with fresh air, oxygen, artificial respiration and seek medical treatment; If ingested, induce vomiting and seek medical attention.
8. Packaging, storage and transportation: paint baking iron drum (190kg / barrel), plastic drum (190kg / barrel) and stainless steel pressure tank can be used for packaging; It shall be stored in a cool and ventilated warehouse, protected from light and heat, sealed in barrels, with a shelf life of one year. The storage effect of atmospheric tank is not as good as that of barrel, so it is not suitable for long-term storage; Transport according to general dangerous goods requirements