Iso-butyl methyl ketone

Properties Methyl iso-butyl ketone (MIBK) Tributyl phosphate (TBP) 2-octanol... 

Methyl iso-butyl ketone, 279-281 Microcalorimetry, 237 Molar conductivity, 155, 160 Molar volume, 156, 160... 

In order to concentrate the lead extract, remove the lead from the organic solvent by shaking this with three successive 10 mL portions of the dilute hydrochloric acid solution, collecting the aqueous extracts in a 250 mL beaker. To the combined extracts add 5 mL of 20 per cent ascorbic acid solution and adjust to pH 4 by the addition of concentrated ammonia solution. Place the beaker in a fume cupboard, add 3 mL of the 50 per cent potassium cyanide solution and immediately adjust the pH to 9-10 with concentrated ammonia solution. Transfer the solution to a 250 mL separatory funnel with the aid of a little de-ionised water, add 5 mL of the 2 per cent NaDDC reagent, allow to stand for one minute and then add 10 mL of methyl iso butyl ketone. Shake for one minute and then separate and collect the organic phase, filtering it through a fluted filter paper. This solution now contains the lead and is ready for the absorption measurement. 

A laboratory test is carried out into the extraction of acetic acid from dilute aqueous solution, by means of methyl iso-butyl ketone, using a spray tower of 47 mm diameter and 1080 mm high. The aqueous liquor is run into the top of the tower and the ketone enters at the bottom. 

Lapadula DM, Habig C, Gupta RP, et al. 1991. Induction of cytochrome P450 isozymes by simultaneous inhalation exposure of hens to n-hexanc and methyl iso-butyl ketone (MiBK). Biochem Pharmacol 41(6-7) 877-883. 

DiVincenzo GD, Kaplan CJ, Dedinas J. 1976. Characterization of the metabolites of methyl n-butyl ketone, methyl iso-butyl ketone, and methyl ethyl ketone in guinea pig serum and their clearance. Toxicol AppI Pharmacol 36 511-522. 

Thermal decomposition of metal acetates in the presence of PVP was proposed by Bradley et al. (30), where the preparative procedure of Esumi et al. (31) was modified. Thus, heating of palladium and copper acetates in a solvent with a high boiling point (ethoxyethanol) provides PVP-stabilized Pd/Cu bimetallic nanoparticles. In this method, not only thermal decomposition but also reduction by ethoxyethanol could be involved. However, the Bradley method can provide Cu/Pd bimetallic nanoparticles that contain less than 50 mol% of Cu, while our method mentioned earlier can provide fine particles with 80 mol% of Cu. In Esumi s original procedure, methyl iso-butyl ketone (MIBK) was used as a solvent without a stabilizer. In his method, Cu" was not completely reduced to Cu°, but Cu20 was involved in the bimetallic nanoparticles. Probably, thanks to Cu1 species in the surface of the particles, no stabilizer is necessary for the stable dispersion. 

Applicable to Grade 6. It shall be made by mixing 100 gallons of Grade 5 alcohol with 5 gallons of ethyl acetate and 1 gallon of methyl-iso butyl ketone... 

Methyl n-butyl ketone (hexanonc-2) b.p. 126-128°, 50 per cent. Methyl iso-butyl ketone (4-methylpentanone-2) b.p. 115-119°, 20 per cent. 

Related catalysts for asymmetric borane reduction of ketones are open chain and cyclic phosphoric amides, in the oxidation state +3 or +5 (Scheme 11.3) [10, 11]. Early examples are the phosphonamides and phosphinamides 5a and 5b of Wills et al. [12] and the oxazaphospholidine-borane complex 6a of Buono et al. [13]. In the presence of 2-10 mol% catalysts 5a,b, co-chloroacetophenone was reduced by BH3 SMe2 with 35-46% ee [12]. For catalyst 6a a remarkable 92% ee was reported for the catalytic reduction of methyl iso-butyl ketone and 75% ee for acetophenone... 

MIBK (Methyl iso-butyl ketone) from acetone 41,42... 

Oxygen-containing solvents with a strong coordinating ability, such as diethyl ether, methyl iso-butyl ketone and iso-amyl acetate, form oxonium cations with protons under strongly acidic conditions, e.g. (R20),H+. Metals which form anionic complexes in strong acid can be extracted as ion-pairs into such solvents. For example, Fe(ril) is extracted from 7 M hydrochloric acid into diethyl ether as the ion-pair... 

Methyl iso butyl Ketone 30 100 100 150 ISO 9 5 9 5 9 insoluble in reageni pariially soluble In raagant insoluble in reagent panialijT soluble in reagent iflsolub in reegeni Eval 0, 40, 62.9. 73.4, 100 mol% VA conlents Evai 0, 40 rnoL% VA conlenis Eval E2.9, 73 4.100 rnol% VA contents Eval 0, 40 moJ% VA cements Eval G2.9. 73 4. 100 inol VA conlanls... 

Methyl Iso butyl Ketone Methyl Isopropyl Ketone Methyl Methacrylate Methyl Salicylate Methyl Sulfuric Acid Methyl Trlchlorosllane Methylamine Methylene Bromide aquaous sekution or liquid 23 82 es M ea 23 79 7 2 2 B 5 8. .t. B M m. axp. temp. Is max, recom. flM rscpntmaiMtKf for ua tip. 1. max. iacom. u Alocham Forallon Alochem Kynar u H U H M... 

For one non-phosphorous extracting agent methyl-iso-butyl ketone (MIBK) enough data (63) are available for the inclined W plot (Fig. 14). From this plot it is also possible to predict the log r values for the missing members... 

Figure 8-7. Correlation between equilibrium constant for esterification and solubility of water in the solvent. Equilibrium constant was defined as [Ester]/([Alcohol].[Acid]), for reactions at fixed water activity (close to 1). Solvents are bb, butyl benzoate be, bromoethane bk, dibutyl ketone bp, dibutyl phthalate bz, benzene ca, 1,1,1-trichloroethane cf, chloroform ct, carbon tetrachloride cy, trichloroethylene ee, ethyl ether ek, diethyl ketone ep, diethyl phthalate hd, hexadecane hx, hexane me, methylene chloride mk, methyl iso-butyl ketone nm, nitromethane oc, /so-octane pe, iso-propyl ether tl, toluene. Valivety et al...

A ketone methyl iso-butyl ketone or acetone. Being miscible, the latter may not be suitable if a medium of high water activity is required - this will end up as a high water content mixture that may dissolve and denature the enzyme. 

For preparative purposes, the idea of correlation with some qualitative idea of solvent polarity is often sufficient, as implied here. There are numerous parameters which can be used to quantify the difference between solvents, but they all show some correlation with each other. By almost any measure, we would obtain the order hexane, toluene, methyl iso-butyl ketone, propanol. However, different parameters can give different rankings when more similar solvents are compared. For biocatalysis in non-aqueous media, there are few effects where the correct solvent scale can be confidently identified. However, it is useful to have an idea of two quite different classes of solvent scale. 

The O-alkylation of 3-diethylaminophenol has been effected in 97.5% yield from the phenol in methyl iso-butyl ketone containing powdered potassium carbonate by stirring for SOmins. and after the addition of ethyl bromide, reacting for 3 hours in an autoclave initially at 115-120 C and finally at 140-142X during 5 hours under 5 bar to give 3-diethylaminophenyl 0-ethyl ether (ref.96). 

Mesityl oxide, ( 113)2 C=CHCOCH3, can be selectively hydrogenated to methyl iso butyl ketone with this catalyst. ... 

Di-n-hexyl ketone Methyl ethyl ketone Methyl n-propyl ketone Methyl iso-propyl ketone Methyl n-butyl ketone Methyl iso-butyl ketone Methyl n-amyl ketone Methyl n-hexyl ketone Chloroacetone. ... 

The thiourea derivative, l-[3,5-di(trifluoromethyl)phenyl]-2-thiourea (Tl) was purchased from Fluorochem Ltd (Derbyshire, UK). A 1000 ppm spectrosol solution of Au as an AuCV solution was obtained from BDH Chemicals Ltd. (Poole, England). All CO2 gas cylinders were fitted with dip tubes and bought from Irish Oxygen (Cork, Ireland). All extracted samples after SFE were collected in either methyl iso-butyl ketone (MIBK), DMSO (bodi purchased from BDH) or methanol (Merck, Germany) as indicated. 

Methyl-2-butene Methyl butyl ketone Methyl iso-butyl ketone Methyl tert-butyl ketone Methyl-o-tert butylphenol Methyl butyrate... 

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