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acetone technical grade

Product name acetone technical grade
Synonyms 2-propanone
dimethyl ketone
GOST 2768-84
CAS 67-64-1

Acetone is a colorless, volatile, mobile, flammable, hygroscopic liquid with a characteristic odor. It is fully miscible in water, methanol, ethanol, diethyl ether, chloroform, esters and many other organic solvents. It exhibits chemical properties characteristic for aliphatic ketones. It is stable to most oxidizing agents action. Only strong oxidizers, such as alkali potassium permanganate or chromic acid convert it into acetic and formic acids. Acetone can be catalytically reduced by zinc or magnesium amalgams to give isopropanol. Reaction with secondary alcohols in the presence of aluminium alcoholates results in corresponding ketones (Oppenauer reaction):

(CH3)2CO + RR'CHOH --> (CH3)2CHOH + RR'CO

Acetone condense by aldol type to form diacetone alcohol (CH3)2C(OH)CH2COCH3. Crotonic condensation results in mesityl oxide (CH3)2C=CHCOCH3, phorone (CH3)2C=CHCOCH=C(CH3)2 and mesitylene (1,3,5-trimethylbenzene). Also acetone reacts with phenol in the presence of mineral acids to form diphenylol propane (Bisphenol A) (HOC6H4)2C(CH3)2. Interaction with hydrogen cyanide results in acetonecyanohydrin (CH3)2C(OH)CN. Being heated up to 700°C acetone decomposes to give ketene CH2=C=O and methane CH4.

Production.

There are many methods for acetone manufacturing.

  • Cumene oxidation or Udris-Sergeev method. Process consists of three stages. At the first step benzene is alkylated with propylene to give isopropyl benzene (cumene). Then cumene is oxidized with oxygen in the presence of alkali additives at 130°C to form cumylhydroperoxide, which is hydrolyses in acid medium at 60°C resulting in phenol and acetone:

    C6H6 + CH3CH=CH2 --> C6H5CH(CH3)2
    C6H5CH(CH3)2 + O2 --> C6H5C(CH3)2OOH
    C6H5C(CH3)2OOH --> C6H5OH + (CH3)2C=O


  • by isopropanol oxidation in vapour phase at 450-650°C in the presence of metal copper, silver, nickel or platinum:

    (CH3)2CHOH + 1/2O2 --> (CH3)2C=O + H2O

  • by autocatalytic isopropanol oxidation in liquid phase at 90-140°C and 0.2-0.3MPa. Final products of this process are acetone and hydrogen peroxide:

    (CH3)2CHOH + O2 --> (CH3)2C=O + H2O2

  • by direct propylene oxidation in the presence of palladium chloride at 50-120°C and 5-10MPa:

    CH3CH=CH2 + PdCl2 + H2O --> (CH3)2C=O + Pd + 2HCl
    Pd + 2HCl + 1/2O2 --> PdCl2 + H2O


    Uses.

  • as a solvent, cleaning agent for painting, as a paint removers component;
  • as a solvent for cellulose nitrates and acetates;
  • as an extracting agent, reaction medium, solvent in chemical, pharmaceutical and food industries;
  • as a raw material and an intermediate in making of acetic anhydride, ketene, diphenylolpropane (Bisphenol A), diacetone alcohol, mesityle oxide, mesitylene, methylisobutyl ketone, methylmethacrylate, isophorone and other compounds;
  • in vessels for the safe transporting and storing of acetylene. One liter of acetone can dissolve around 250 litres of acetylene.

  • Manufacturer(s) JSC Kazanorgsintez
    JSC Khimprom
    OJSC Navoiyazot
    CJSC Neftechimia
    JSC Omsky kauchuk
    OJSC Saratovorgsintez
    JSC Sintez
    Chemical structure of acetone

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