Solvent, solvents methyl ethyl ketone

METHOD 4 [115]-80% phenol in aqueous H2SO4 soiution of pH 3 is brought to 50 C. 30% H2O2 is then added causing an exothermic reaction and a temperature of 15 C over 3-4 minutes time. 6% aqueous H2SO3 is added after 4.5 minutes, the solution quickly cooled and extracted with isopropyl acetone (Strike would think that another solvent like methyl ethyl ketone could be used) to give 60% catechol. 

Butanol is employed almost exclusively to make the solvent methyl ethyl ketone [78-93-3]. 

Solvents acetone, methyl ethyl ketone (MEK), toluene, xylene, glycol, ethers, alcohol defats and dries skin some may be absorbed may carry other components through skin high volatility, exposure possible irritation central nervous system depression (e.g. dizziness, loss of coordination) low to high toxicity, longterm effects... 

FIGURE 2.12 Sorption curves for different nanocomposites at 45°C (solvent methyl ethyl ketone [MEK]). (From Maiti, M. and Bhowmick, A.K., J. Appl. Polym. Sci., 105, 435, 2007. Courtesy of Wiley InterScience.)... 

The enamels with Knoop hardness above 20 KHN and hardness of 3H or higher had excellent solvent (methyl ethyl ketone) resistance. 

O Donoghue JL, Flaworth SR, Curren RD, et al. 1988. Mutagenicity studies on ketone solvents Methyl ethyl ketone, methyl isobutyl ketone, and isophorone. Mutat Res 206 149-161. 

Suitable inert solvents include methyl ethyl ketone, benzene, ethylbenzene and toluene. Suitable initiators include peresters and peroxycarbonates such as ferf-butyl perbenzoate, ferf-butyl peroxy isopropyl carbonate, fcrf-butyl peroctoate, tert-butyl peroxy isonon-... 

Less commonly used solvents include methyl ethyl ketone, b.p. 80° ethylene chloride, b.p. 84° dioxan (diethylene dioxide), b.p. 101° (vapours are toxic) toluene, b.p. 110° pyridine, b.p. 115-5° chlorobenzene, b.p. 132° cellosolve (ethylene glycol monoethvl ether), b.p. 134-5° di- -butyl ether, b.p. 141° s-tetrachloro-... 

Ketones, which are solvents for polystyrene, exhibit similar behavior. Acetone is a relatively poor solvent, methyl ethyl ketone is much better, and the ketones with longer paraffinic ends are finally no longer solvents. 

F005 The following spent nonhalogenated solvents toluene, methyl ethyl ketone,... 

Organic solvent methyl ethyl ketone -> Diatomaceous earth particle - Aqueous plasma layer... 

Certain substrates (woven and nonwoven fabrics, foils, and films) are coated by dipping, spreading, or spraying with fluoroelastomers in liquid form. The older method using a solution of fluoroelastomers in volatile solvents (methyl ethyl ketone, toluene, etc.) is gradually being replaced by the use of water-based latexes (see Chapter 6). 

The Mandelkern-Flory viscosity data for cellulose tributyrate are plotted according to Eq. (58) in Fig. 18. It is seen that the line for the viscosities in the good solvent methyl ethyl ketone at 30° C passes without strain to the same intercept as the lines for the two high-temperature theta solvents. The intercept gives K = (9.7 1.5) 10-4 and a = 1.79 0.10, as listed in Table 9. Although, as discussed in the... 

Poly styrene-butadiene-styrene (Casting solvent Methyl Ethyl ketone) 2.020 2.87 19 Mw= 124000... 

We have examined experimentally the response of the light-scattering instrument to scattering using the same polystyrene standards in solvents of different index of refraction. We made a series of measurements on two polystyrene standards (Millipore nominal = 8500, P/N 25171, Lot 80314 and Waters nominal = 110,000, P/N 41995, Lot 70111) dissolved in five solvents [acetone, methyl ethyl ketone (MEK), tetrahydro-naphthalene, THE, and toluene]. 

Solvents in use for wax removal include propane, which also serves as an autorefrigerant for the process by solvent evaporation, methyl ethyl ketone (MEK)-toluene mixtures, and methyl isobutyl ketone (MIBK). The last two systems are in widest use at present. MEK-benzene was once a common solvent combination for dewaxing but has now been abandoned from benzene toxicity considerations. 

Another approach to a diglycidyl ether of this type which results in a product of improved solubility characteristics is the reaction of two moles of a pure diglycidyl ether of Bisphenol-A with one mole of 2,6-divanillylidene cyclohexanone. This results in a resin with glycidyl ether terminals which is partially soluble in ketone solvents, particularly methyl ethyl ketone. 

Fig. 9.1.1.1. Determination of the radiochemical purity of a radiopharmaceutical by instant thin-layer chromatography (ITLC) using two different solvents, methyl ethyl ketone (MEK) and saline...

System I Separation of Tc-pertechnetate in organic solvent methyl ethyl ketone (MEK) Tc-diphosphonates and hydrolized Tc activity remain at the start free 99mTc-pertechnetate is measured at the solvent front. 

The following spent non-halog ated solvents toluene, methyl ethyl ketone, (1,T) carbon disulfide, isobutanol, and pyridine and the still bottoms from the recovery of these solvrats. 

Solvents are used to modified the viscosity of an adhesive. Common solvents include methyl-ethyl ketone (MEK), methyl isobutyl ketone (MIBK), and ethylene chloride. 

The effect of adverse environments on the fatigue behaviour of glass fibre reinforced pofymers will be discussed, taking polyetherimide (PEI) as an example [36], PEI is an amorphous thermoplastic, so a low resistance to solvents and similar harsh environments can be expected. Because of its potential applications in aircraft and railways, the hydraulic fluid (Skydrol) and the solvent methyl ethyl ketone (MEK) were chosen. 

Butanediol, otherwise known as 2,3-butylene glycol (2,3-BD), is a valuable chemical feedstock because of its application as a solvent, liquid fuel and as a precursor of many synthetic polymers and resins. With a heating value of 27,200 J/g, 2,3-BD conq>ares favorably with ethanol (29,100 J/g) and methanol (22,100 J/g) for use as a liquid fuel and fUel additive (213). Dehydration of 2,3-BD yieldsthe industrial solvent methyl ethyl ketone which is much more suited as a fuel because of its much lower boiling point. Further dehydration yields... 

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