Butanol and ethyl acetate

Oxygenated solvents, such as acetone, methyl ethyl ketone, methanol, ethanol, butanol, and ethyl acetate and... 

Most of the derivatives shown in Figure 8 are solvent extractable at low pH, and thus one of the classical methods used for antibiotic purification becomes accessible to cephalosporin C. To be commercially feasible, solvents should be selective and only slightly miscible with water. Extraction efficiency should be sufficiently high that multiple extractions are not required, and ideally should be efficient at low ratios so as to effect a concentration of the desired component. Emulsions and insoluble solids are anathema to extraction. Using these criteria, extraction of most of the cephalosporin C derivatives at low pH are far from ideal since mostly non-selective solvents (such as n-butanol and ethyl acetate) usually work best several extractions seem to be required, and derivatized cephalosporin C broth upon acidification will frequently result in emulsion formation. However, some derivatives behave better than... 

In this project, distinguishing properties of the 10 organic liquids should be observed (Part A) and unknowns subsequently identified (Part B) according to an SOP which I wrote for this. The properties are (1) water miscibility, (2) density, (3) viscosity, (4) refractive index, and (5) odor. The 10 organic liquids are acetone, methanol, ethanol, isopropyl alcohol, heptane, cyclohexane, toluene, methyl ethyl ketone, butanol, and ethyl acetate. 

Chem. Descrip. Oil-modified sebacic acid alkyd polymeric plasticizer Uses Plasticizer for PVB, NC films, fabric coatings ethyl cellulose cable, paper, wood, and metal lacquers grinding medium for NC lacquers Features Permanent exc. pigment wetting and stability props. Properties Yel. vise, liq. sol. in aromatic hydrocarbons and in mixts. with ethanol, butanol, and ethyl acetate sp.gr. 0.998 vise. (G-H) Z2 acid no. 3.5 max. flash pt. 288 C fire pt. 313 C Uniflex DBS [Arizona Eastech]... 

Kato, M. Konishi, H. Hirata, M. New apparatus for isobaric dew and bubble point mefliod. Methanol -water, ethyl acetate - ethanol, water - 1-butanol, and ethyl acetate - water systems. J. Chem. Eng. Data... 

Poly(4-vinylpyridine) [25232-41-1] M (105.1)n. Purified by repeated pptn from solns in EtOH and dioxane, and then EtOH and ethyl acetate. Finally, freeze-dried from rcrt-butanol. 

The flowers of Plumeria rubra L. cv. acutifolia can provide plumericidine, as described by [97]. The ethanol (95%) extract, obtained from 2.9 kg of flowers, was successively parhhoned with petroleum ether, ethyl acetate and butanol. The ethyl acetate fraction was sequentially submitted twice to column chromatography using silica gel and gradient of chloroform/ methanol as mobile phase. Chromatography on a Sephadex LH20 column yielded 20 mg of plumericidine. 

Tb a solution of 7 (458 mg, 1.7 mmol) and /V-methyl morpholine /7-oxide (244 mg) in r-butanol (1 mL), a few crystals of osmium tetraoxide dissolved in THF (1.5 mL) were added. After 3 days 40% aqueous solution of NaHS03 (3 mL) was added, the mixture was stirred for additional 30 min, and extracted with ethyl acetate (3 x 20 mL). The extracts were dried (MgS()4) and concentrated to dryness. The residue was purified by chromatography on a silica gel column with light petroleum-ether-methanol (4 5 0.5) to yield 9 (371 mg, 72%) mp 89.5° (from a mixture of hexane and ethyl acetate), [a]D + 52° (c 1.0, CHClj). 

The synthesis of sildenafil serves as an excellent example of the demands of commercial chemistry. The route described contains all of the desired attributes required in chemical development, namely a safe, robust route, a convergent synthesis and a high yielding process. The authors managed to improve the yield from 7.5 % in the medicinal chemistry to 75.8 % overall from pyrazole 3. The synthesis also has an exceptionally low environmental impact. Only toluene and ethyl acetate are organic waste while the other solvents (ethanol and tert-butanol) can be treated in the water plants. The synthesis has been... 

Many different solvent developers have been used in the separation of sugars and related compounds. Three of these, phenol-water, collidine-water, and 1-butanol-acetic acid-water,27 also commonly employed in the resolution of amino acid mixtures, are widely used. Other commonly used solvent developers are 1-butanol-ammonia-water, 1-butanol-ethanol-water,27 1-butanol-pyridine-water,61 ethyl acetate-acetic acid-water, and ethyl acetate-pyridine-water.26... 

Platform chemicals are compounds that serve as building blocks for numerous chemical intermediates and end products. An example is ethylene, which serves as the feedstock for derivatives such as acetaldehyde, ethylene dichloride, ethylene oxide, polyethylene, vinyl acetate, and ethyl acetate. Biobased chemicals such as succinic acid, 3-hydroxypropionic acid (3-HP), and butanol also have the potential to be converted into multiple derivatives, some of which are commodity chemicals and others that are higher-value chemicals. 

Clavulanic acid may be extracted from the culture medium. Normally the cells of the Streptomyces clavuligerus are first removed from culture medium by filtration or centrifugation. Then clavulanic acid is extracted into an organic solvent, for example, n-butanol or ethyl acetate, or n-butyl acetate, or methyl isobutyl ketone. Then n-butanol fraction are treated with new aqueous phase using potassium hydrogen carbonate and then this aqueous phase is washed with n-butanol. This aqueous extract, after separation of the phases, is concentrated under reduced pressure. Freeze-drying at -20°C may also be... 

Solubility soluble 1 in less than 2 of water 1 in 30-40 of methanol practically insoluble in ethanol, -hexane, 1-butanol, acetonitrile, 2-propanol, and ethyl acetate. Viscosity (dynamic) 1.75mPas for a 8.5% w/w aqueous solution at 25°C, 1.09 mPas at 60°C ... 

Properties Golden-yellow crystals. Mp 168-169C. Very soluble in aqueous solutions above pH 8.5 freely soluble in the Cellosolves dioxane and Carbitol slightly soluble in water, methanol, ethanol, butanol, acetone, ethyl acetate, and benzene insoluble in ether and naphtha. 

Acetaldehyde reacts to form a number of side-products, including ethyl acetate, acetic acid, and butanol only ethyl acetate is considered here. 

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