Ether solubility

Water-Soluble Ether-Soluble Desmethylmexacarbate Others... 

If the concentration of peroxide is not too great, the material can be salvaged by shaking with aqueous ferrous sulfate. In the case of a water-soluble ether, solid CuCI may be used to remove traces of peroxides.2 Large amounts of peroxides may be removed by storing the liquid over activated alumina or by running the liquid through an activated alumina column. CAUTION Do not allow the... 

The clear aqueous centrifugate containing water-soluble, ether-insoluble components was fractionated by ion exchange into neutral, weak acid, and strong acid fractions as detailed previously (75, 16). 

Organic solvents Soluble In hydrochlorlc and sulfuric acl dsb Partition coefficients Soluble ether, i in alcohol, acetone13 No data Soluble in ether benzene, alcohol ... 

Svetlichnii VM, Denisov VM, Kudryavtsev VV Polotskaya GA, Kuznetsov YP (1991) Soluble ether imide-oligodimethylsiloxane copolymers kinetic mechanical and gas separation properties of polyimides and other high-temperature polymers. Proc Eur Tech Symp 2nd Abadie MJ, Sillion B (eds). Elsevier, Amsterdam,pp 525-535... 

Composition vs. properties. With such a wide pallet of raw materials, it is possible to produce a very wide range of attributes in the surfactant and the HLB may be varied from 8 (low C number, low EO), to give surfactants soluble in organic media, to >20 (very good aqueous solubility). Ether sulphates (laureth-2 or laureth-3) would have HLB values of 20. 

Hot 100 per cent sulphuric acid, very soluble. Ether, toluene, acetone, ligroin, etc., very soluble. 

Both methylated dextrins dissolve easily in the cold in alcohol, chloroform, or water. In warm water they are slightly soluble. Ether dissolves only the 0-methyl-a-dextrin easily in petroleum ether both substances are only slightly soluble, especially the d-derivative. 

For the last time a great number of new dyes, such as azo dyes, derivatives of antrapyridon and antrapyrimidon [44], derivatives of perylene [91], water-soluble ethers of antrachinon [92] condensation products of symmetric and asymmetric indigoide colours with aryl-cyclohalogenides [93], derivatives of phthalocyanine [94] and others have been synthesized. 

The preparation of this relatively stable, partially water-soluble, ether-soluble complex of methylcopper (I) is conducted as follows 1... 

Table 6.4 pKar water solubility, ether solubility, and bioactivity of some sulfonamides... 

For all gases except diethylether and acetone, Wagner et al. (11) used equal volumes of helium and liquid for gas equilibration. For the highly soluble ether and acetone, they took advantage of the change in distribution coefficients shown in Table I and introduced a measured... 

To obtain more information on the nature of the degradation products of the estrogens,. Jellinck (1959) incubated human and rat liver slices as well as mushroom tyrosinase with estrone-/ff-C. The results showed that liver and phenol oxidase of mushroom have a marked ability for converting estrone into water-soluble, ether-insoluble metabolites. The formation of these products was almost completely abolished by cyanide. From an investigation of the estrone degradation products, Jellinck (1959) reached... 

Ethyl cellulose is used industrially as a plastic similarly to cellulose acetate. The water soluble ethers, like methyl, carboxymethyl, and hydroxyethyl, are used as thickeners in 00 an in paper manufacturing. 

Solubility sol aromatic hydrocarbons (toluene, benzene, chlorobenzene), chloroform, dichloromethane, ethyl acetate slightly soluble ether. 

Prolonged release from compressed hydrophilic matrices is dependent on the rate and extent the cellulose excipient hydrates in forming an external pseudo-gel layer. Earlier investigations performed in this laboratory [33] have shown for example that not all the water-soluble ethers are convenient for preparation of tablets by direct compression that will remain coherent for many hours when in contact with water (Table 8). 

MC, HPC and HPMC are water soluble ethers with good film-forming properties. In order to avoid the formation of agglomerates the dissolution of these nonionic cellulose ethers must be done in two steps dispersion and hydration. Wherever possible, they should be put into solution before other soluble ingredients are added or should be dispersed in water miscible nonsolvent such as glycerol, ethanol or propylene glycol and then add the slurry to water. The solutions of these cellulose ethers are stable at pH 2-11 and are compatible with surfactants, other water-soluble polysaccharides, and with salts. 

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