Methylethylketone xylene

In Figure 3 the merits of the two processes for p-xylene oxidation are compared. The main disadvantages of the Eastman Kodak/Toray cooxidation method are the need for a cosubstrate (acetaldehyde of methylethylketone) with concomitant formation of a coproduct (0.21 ton of acetic acid per ton product) and high catalyst concentration. The Amoco MC process, on the other hand, has no coproduct and much lower catalyst concentrations but has the disadvantage that the bromide-containing reaction mixture is highly corrosive, necessitating the use of a titanium-lined reactor. 

P.Y.173, an isoindolinone pigment, affords somewhat dull, greenish yellow shades. It shows average fastness to organic solvents, especially to alcohols (ethanol), esters (ethyl acetate), and ketones (including methylethylketone and cyclohexanone). Its solvent resistance equals step 3 on the 5 step scale. P.Y.173 is almost completely to completely fast to mineral spirits and xylene. 

P.Y.182, which has been available for some years, provides somewhat reddish shades of yellow and is tinctorially strong. It is sensitive to a variety of organic solvents, especially to ketones such as methylethylketone and cyclohexanone, as well as to aromatic solvents such as toluene or xylene. In this respect, the pigment equals step 2 on the 5-step scale (Sec. 1.6.2.1). P.Y.182 is targeted for the paint and the plastics industry. 

Jain (20), in his introduction, notes that the direct injection of the blood sample does not give "ghost" or interfering peaks. The column can be used for a long time. The method is not limited to ethanol, since methanol, isopropanol, and acetone as well as toluene, methylethylketone, and xylene (associated with glue sniffing) can be quickly determined. 

Others acetone, kerosene, dioxane, methylethylketone, toluene, benzene, xylene, ether, ether acetone, dimethylether, diethylether, formaldehyde, acetaldehyde, formic acid, acetic acid and methyl formate... 

Percentage swell in water, methylethylketone (MEK) and xylene was determined for square specimens (25 x 25 mm) after 2 weeks of immersion at room temperature and calculated from the following equation ... 

Sparingly soluble in water, soluble in organic solvents such as ethanol, acetone, methylethylketone, benzene, toluene, xylene Stable in a pH range of 3-11 decomposition at 230-240°C... 

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