Solvents isopropyl acetate

Ketones and esters are required for C-type inks. Types of esters are ethyl acetate, isopropyl acetate, normal propyl acetate, and butyl acetate. From the ketone class, acetone or methyl ethyl ketone (MEK) can be used. The usual solvent for D-type inks are mixtures of an alcohol, such as ethyl alcohol or isopropyl alcohol, with either aUphatic or aromatic hydrocarbons. Commonly used mixtures are 50/50 blends by volume of alcohol and aUphatic hydrocarbon. 

Compared with ethyl acetate and isopropyl acetate, propyl acetate has slow evaporation rate and good solvent power which promote improved flow and leveling characteristics in a variety of coating formulations. 

About 50% of isopropanol use is to produce acetone. Other important synthetic uses are to produce esters of many acids, such as acetic (isopropyl acetate, solvent for cellulose nitrate), myristic, and oleic acids (used in lipsticks and lubricants). Isopropylpalmitate is used as an emulsifier for cosmetic materials. Isopropyl alcohol is a solvent for alkaloids, essential oils, and cellulose derivatives. 

Isopropyl acetate is used as a solvent for coatings and printing inks. It is generally interchangeable with methylethyl ketone and ethyl acetate. 

The novolac sample, which was provided by Kodak, was synthesized from pure meta-cresol and formaldehyde. It has a weight average molecular weight of 13,000 and a very broad polydispersity of 8.5. The polymer was purified by two precipitations from tetrahydrofuran into hexane. The PAC was a naphthoquinone-1,2-(diazide-2-)-5-sulfonyl ester provided by Fairmount Chemical (Positive Sensitizer 1010). A hydroxyl substituted benzophenone is attached to the sulfonyl ester. The spreading solvent was isopropyl acetate, which was obtained from Aldrich Chemicals and used as received. 

The LB film depositions were performed using a Joyce-Loebl Langmuir Trough IV equipped with a microbalance for measurement of the surface pressure by the Wilhelmy plate method. Filtered deionized water with a pH of 7 was used for the subphase. For the electron beam lithography study, PMMA was spread on the water surface from a dilute benzene solution ( 10 mg PMMA in 20 ml benzene). The novolac/PAC mixtures were spread from solutions ( 20 mg solids in 10 ml solvent) of isopropyl acetate. For the fluorescence studies, the PMMA/PDA mixture was spread on fee water surface from a dilute benzene solution (1.75 mg PDA and 8.33 mg PMMA in 20 ml benzene). Prior to compression, a 20 min interval was allowed for solvent evaporation. The Langmuir film was compressed to the desired transfer pressure at a rate of 50 cm2/min, followed by a 20 minute equilibration period. The Cr-coated silicon wafers and quartz wafers were immersed into fee subphase before... 

Isopropyl acetate org chem CH3C00CH(CH3)2 A colorless, aromatic liquid with a boiling point of 89.4°C used as a solvent and for paints and printing inks. T-so pro-pol as-3,tat ... 

Figure 1. Separation of selected solvents spiked into a synthetic sample at TLV levels (A) aqueous phase, (B) carbon disulfide phase 1, ethanol, 2, acetone, 3, carbon disulfide, 4, 2-propanol, 5, 1-propanol, 6, methyl ethyl ketone, 7, ethyl acetate, 8, 1-butanol, 9, isopropyl acetate, 10, n-hexane, 11, n-propyl acetate, 12, methyl isobutyl ketone, 13, toluene (19)...

To a 12 L 3-neck round bottom flask was added isopropyl acetate (6.5 L). The solvent was cooled to 0°C in an ice-water bath and 3-amino-l-propanol (1.14 kg, 15.1 mol) was added in one portion. To this stirring solution, benzyl chloroformate (1.20 kg, 7.03 mol) was added dropwise over 2 hours while maintaining the internal temperature of the flask between 10-15°C. After the addition was complete, the reaction mixture was allowed to stir for an additional 0.3 hour after which time water (3.5 L) was added in one portion. The solution was then partitioned and washed with an additional 2 times 3.5 L of water. The organic layer was dried over potassium carbonate and concentrated to give a solid that was dissolved in excess isopropyl acetate and precipitated from solution by adding the compound to heptane. The solid was filtered under nitrogen to yield 1.20 kg (82%) of N-carbonylbenzyloxy-3-aminopropanol as a colorless solid. 

Ethyl or Isopropyl acetate may also be used as extraction solvents for less lipophilic N-tert-butoxycarbonyl amino acids. 

The approaches to anhydrous or essentially anhydrous solutions include reaction of the acid anhydride with hydrogen peroxide in the presence of a solvent,44 oxidation of the analogous aldehyde45 and azeotropic removal of water during peracid formation.46 By far the easiest and safest method is to simply extract the equilibrium peracid into an appropriate solvent.47 The solvents usually employed are ethyl acetate or isopropyl acetate. A range of substrates has been epoxidized using such extracted peracids (Figure 3.12). 

The solvent composition of the system is approximately 4 1 heptane isopropyl acetate. This was predetermined by using solubility data of tetrabenzyl pyrophosphate under different conditions (listed below) at 5°C. 

Heptane isopropyl acetate (v/v)Solubility (mg TBPP/g solvent) ... 

Miscella winterization more effectively separates the high melting solids from rice oil. Hexane, acetone, and isopropyl acetate are among the solvents used. The miscella is slowly cooled to 15°C over 12 hours with agitation, then to 4-5°C without agitation, and held for 24 8 hours before filtering. 

With most of the R groups, the above reactions can be pushed to completion if the liberated isopropanol or acetate is removed azeotropically with a solvent such as benzene or cyclohexane. Alternatively, the reactions lead to the isolation of mixed alkoxides, many of which can be distilled without apparent disproportionation (6). For the replacement of isopropoxide by rcrr-butoxide groups, transesterification with rerf-butyl acetate is generally preferred (6) because of a larger difference in the boiling points of ferf-butyl and isopropyl acetate. 

Isopropyl acetate (IPAc) is much more resistant to hydrolysis than EtOAc in the preparation of the methanesulfonate salts 3 (Figure 4.3) significant amounts of the acetic acid solvates were formed when the solvent was EtOAc, and IPAc was preferred [12], Crixivan intermediate 4 was prepared under Schotten-Baumann conditions by using IPAc at elevated temperatures (Figure 4.4) [13], which suggests the resistance of IPAc to hydrolysis. 

Use Manufacture of acetone and its derivatives, manufacture of glycerol and isopropyl acetate, solvent for essential and other oils, alkaloids, gums, resins, etc. latent solvent for cellulose derivatives, coatings solvent, deicing agent for liquid fuels, lacquers, extraction processes, dehydrating agent, preservative, lotions, denaturant. 

One of the reaction steps in a multistep synthesis produces the desired mono-addition product, R, which overreacts to a bis-addition by-product, S in a phase transfer reaction system. The solvent system is water/isopropyl acetate. The reaction is run by feeding reagent B over a several-hour period to a two-phase mixture of the solvents containing the phase transfer catalyst. 

Solubility. Solid polyamides are soluble in some alcohols and if properly formulated tolerate significant amounts of hydrocarbon-type solvents. Actually these formulated polyamides are more soluble in a combination of alcohol and hydrocarbon solvent than alcohol alone (13). Thus, ethyl alcohol, isopropyl alcohol, propyl alcohol, and butanol can be used in combination with hexane, mineral spirits, xylene, and toluene. Isopropyl acetate may also be used when nitrocellulose compatibility is required. 

The solvents evaluated were methanol, ethanol, isopropanol, ethyl acetate, isopropyl acetate, and tetrahydrofuran. Isopropyl acetate and ethanol were identified as the solvents of choice because they led to the lowest levels of impurities. 

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