Ethyl acetate alcohol

During the last hour of heating about 20 g. of the ethyl acetate-alcohol mixture distilled. 

Toluene Benzene Ethyl acetate Alcohol Chloroform... 

Ethyl acetate alcohol c4h8o2 83.8 28.43 Succinic anhydride c4h4o3 119 48.74... 

When acetone is used as an eluant, it is separated from the filtrate by distillation in a vacuum or by extraction with a solvent that is not miscible with water. The resulting aqueous concentrate of penicillin is chilled to 0° C, acidified to pH 2.0, and extracted with an organic solvent. Penicillin, a fairly strong acid, is very soluble in a number of organic solvents, e.g., ethyl acetate, alcohol, ether, amyl acetate, cycloxhexanone, dioxane, chloroform. 

Rectangular plates from acetone water- Sublimes in high vacuum between 140 and 170. (Anhydr base mp 189 ) [a]jj —77 (c = 1,6 in methanol). So) in acetone, ethyl acetate. Alcoholic solns darken and acquire a reddish color Hemihydr te crystals from ethyl acetate, mp 162-164. [ )ff —79° (c = 1.08 in ethyl aoetate). 

Maroon-colored needles or hexagonal plates from petr ether, mp 116°. Sublimes i vacuo. Volatile with steam. Sparingly sol in water, petr ether freely sol in acetone, ether, chloroform, benzene ethyl acetate, alcohol-... 

Acetate, CjjHjjOj, lactuceritt, lactucon. Hexagonal plates, mp 251 -252 (from ethyl acetate + alcohol). [a]D +100.5. ... 

The d-camphor- -sulpJionate is prepared in a similar manner to the preceding compound. It forms colourless needles, M.pt. to 137° C., readily soluble in alcohol or acetone, sparingly soluble in ethyl acetate. The following constants are obtained after fractional crystallisation from ethyl acetate-alcohol mixture, using 0-3175 gram of the salt in 30 c.e. of water in a 4 dm. tube at 15° C. ... 

Ethyl acetate Alcohols, esters Aromatic hydrocarbons ... 

Polystyrene Benzene, methylene chloride, ethyl acetate Alcohols, water... 

The methods for the isolation of alkaloids are based upon the fact that they can be extracted under neutral or basic conditions (after basification of, e.g., the plant material or biofluid to pH 7-9 with ammonia, sodium carbonate, or sodium bicarbonate), as free base with organic solvents (e.g., dichloromethane, chloroform, ethers, ethyl acetate, alcohols) and as pro-tonated base with polar solvents (water, alcohols) under acidic conditions (after acidification to pH 2-4 with diluted acids like phosphoric acid, sulfuric acid, citric acid). Some alkaloids can only be extracted at higher pH (>10), e.g., tryptamine. On the other hand, alkaloids containing phenolic groups dissociate at higher pH, and are thus not extracted by organic solvents under such conditions (e.g., morphine). Further purification can be done by liquid/ liquid extraction or liquid/solid extraction. 

Definition Monomethyl ether of hydroquinone Empiricai C7H8O2 Formuia CH3OC6H4OH Properties Colorless to wh. waxy solid or cryst. powd. caramel/phenol odor sol. in water, benzene, ether, acetone, ethyl acetate, alcohol, oxygenated soivs. m.w. 124.14 dens. 1.55 (20/20 C) vapor pressure < 0.01 mm Hg (20 C) m.p. 

In the printing industry, relatively polar solvents such as ethyl acetate, alcohols, and water are most commonly used in flexo printing. These solvents are compatible with the soft rubber-like cliche. More aggressive solvents like acetone and chloroform may shorten the cliche s lifetime. 

Solubility sol ether, acetone, CHCI3, CH2CI2, DMSO, DMF, ethyl acetate, alcohols moderately sol benzene Insol hydrocarbon solvents, CCI4, H2O. 

Conversion to the monohydrochloride hemihydrate was accomplished by treatment with one equivalent of HCl in 95% ethanol. In this case an ethyl acetate/alcohol mixture provided an uncrackable ethyl acetate solvate. Unfortunately, disaster struck again in the clinical program as although the toxicity issue had been adequately addressed with the structural modification, PNU-104067 exhibited metabolic instability in man. The major human metabolite in circulating blood was the side chain oxidized PNU-141571. Although known, interestingly this material was but a minor metabolite in the animal studies. 

---