2,6-Dimethyl-4-heptanone

Diisobutyl Ketone. Diisobutyl ketone (DIBK) (2,6-dimethyl-4-heptanone) is a colorless stable Hquid with a peppermint odor. Some physical properties are Hsted in Table 1. 

The older methods have been replaced by methods which require less, if any, excess sulfuric acid. For example, sulfonation of naphthalene can be carried out in tetrachloroethane solution with the stoichiometric amount of sulfur trioxide at no greater than 30°C, followed by separation of the precipitated l-naphthalenesulfonic acid the filtrate can be reused as the solvent for the next batch (14). The purification of 1-naphthalenesulfonic acid by extraction or washing the cake with 2,6-dimethyl-4-heptanone (diisobutyl ketone) or a C-1—4 alcohol has been described (15,16). The selective insoluble salt formation of 1-naphthalenesulfonic acid in the sulfonation mixture with 2,3-dimethyl aniline has been patented (17). 

Dimethyl-4-heptanone (diisobutyl ketone) Dimethyl sulphate N,N-Dimethyl-p-toluidine Dimethylamine... 

Chemical Designations - Synonyms DIBK sym-Diisopropylacetone 2,6-Dimethyl-4-heptanone Isovalerone Chemical Formula (CH3)2CHCHjCOCH3CH(CH3)2 or CjHijO. 

Dimethylhydrazine, see Unsymmetrical dimethyl-hydrazine 2,6-Dimethyl-4-heptanone, see Diisobutyl ketone ... 

Dimethyl-4-heptanone 2-Acetamido-2,5-dimethyl-4-heptanone (20) 6-Acetamido-2-methyl-4-octanone (20)... 

Synonyms AI3-11270 BRN 1743163 Caswell No. 355B CCRIS 6233 DIBK sym-Diisopropylacetone 2,6-Dimethylheptan-4-one 2,6-Dimethyl-4-heptanone EINECS 203-620-1 EINECS 271-042-7 FEMA No. 3537 Isobutyl ketone Isovalerone NSC 15136 NSC 406913 UN 1157 Valerone. 

Consequentely, we have chosen solvents in order to change separately either the norm of the solubility parameter or its direction (see Fig. 4). These solvents are listed in Table 1. It can be clearly seen that the polar and hydrogen bonding interactions are zero for all of the aliphatic and cycloaliphatic alkanes. This allows one to change only the value of without changing its direction. For a second series of experiments, we compare 2,6-dimethyl-4-heptanone, dib-utylether and methyl-cyclohexane which have nearly identical lengths, but different vector directions. 

One particularly interesting system is the epoxy 2,6-dimethyl-4-heptanone as up to 40 wt % of this solvent can be easily mixed together with the epoxy precursors to generate a phase separation process. This allows one to verify experimentally the possible morphologies which were predicted based on the schematic phase diagram at concentrations below the phase inversion (see Fig. 7). Shown... 

Fig. 11. Scanning electron micrographs of macroporous epoxies prepared via the CIPS technique with various amounts of 2,6-dimethyl-4-heptanone at constant curing temperature, T=40 °C...

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