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N, N-dimethylformamide (DMF)
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It is mainly used as industrial solvents and in medicine industry, it is used to produce vitamin and hormone and also can be used to manufacture chlordimeform.
Relative density 0.9445(25℃). Melting point -61℃. Boiling point 152.8℃. Flash point 57.78℃. Vapor density 2.51. Vapor pressure 0.49kpa(3.7mmHg25℃). Spontaneous ignition point 445℃. Refractive index1.42817, solubility parameter δ=12.1. Explosion limit of vapor and air mixture 2.2~15.2 %. It is miscible with water and the general solvents and hybrid layered with petroleum ether. It might cause burning and explosion in case of open fire and high heat. It can have sharp reaction with concentrated sulfuric acid and fuming nitric acid and even cause explosion. 

 ItemsUnit .......................................  Specification
.............................................
 Density @20C (68F) 0.947~0.953
 Dimethylformamide  %(w/w) ≥99.9%
 Chromaticity, Hazen unit   (platinum-cobalt number) ≤5
 Moisture  mg/kg ≤500
 Methyl alcohol mg/kg ≤20
 PH (25, 20% water solution) 6.5-8.0
Basicity(DMA) mg/kg ≤5
Electrical conductivity  (25)/(us/cm)  ≤2.0
 Iron mg/kg ≤0.005

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