Cycloheptanone preparation and packing

Cycloheptanone is colorless oily liquid. Boiling point 179-180 ℃, relative density 0.9508 (20 ℃), refractive index of 1.4608, flash point 55 ℃. Soluble in alcohol and ether, almost insoluble in water, mint odor.
Cyclohexanone and by the addition of nitromethane, reduction, diazotization, ring expansion derived. Process as follows: methanol, nitromethane, cyclohexanone 11:50 in mixing, dropping lye in 5-10 ℃, -4 ℃ cold response to 1h, filter out sediment, dissolved in water, acidified with acetic acid to pH = 4-5, and then heated to dissolve, put it aside, get a reservoir was methyl cyclohexanol nitrate crude oil; then crude oil with iron reduction, amine a cyclohexanol was still liquid; sodium nitrite solution, in 0-8 ℃ diazotization, heated to 25 ℃ stirring 1.5h, and then heated to 85 ℃, and then steam distillation, distillate put it aside, get a reservoir vacuum distillation, collecting 60 ℃ (1.87kPa) fractions , was finished Cycloheptanone
Cycloheptanone use ampoules, ampoule outside the ordinary wooden box; threaded glass Lid pressure bottles, plastic bottles or metal (cans) outside the ordinary wooden box; threaded bottles, plastic bottles or tin thin steel barrel (LP), full floor grille boxes, fibreboard or plywood box
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