Nitrates, organic with ethanol

These can be converted to their uranyl nitrate addition compounds. The crude or partially purified ester is saturated with uranyl nitrate solution and the adduct filtered off. It is recrystallised from -hexane, toluene or ethanol. For the more soluble members crystallisation from hexane using low temperatures (-40°) has been successful. The adduct is decomposed by shaking with sodium carbonate solution and water, the solvent is steam distilled (if hexane or toluene is used) and the ester is collected by filtration. Alternatively, after decomposition, the organic layer is separated, dried with CaCl or BaO, filtered, and fractionally distilled under high vacuum. 

METHYLAMINO)ETHANOL (109-83-1) Combustible liquid (flash point 165°F/ 74°C oc). A strong organic base. Violent reaction with acids, strong oxidizers. Incompatible with organic anhydrides, acrylates, alcohols, aldehydes, alkylene oxides, substituted allyls, cellulose nitrate, cresols, caprolactam solution, epichlorohydrin, ethylene dichloride, glycols, isocyanates, ketones, maleic anhydride, nitrates, phenols, vinyl acetate. Increases the explosive sensitivity of nitromethane. Attacks aluminum, copper, zinc, and their alloys. 

Other organometallic initiators which have been mentioned include tetra-methyllead (or tetramethyltin) in ter/-butanol dispersed in an aqueous solution of ammonium persulfate and borax [64] and silver compounds such as silver nitrate with organic lead or tin compounds and organic promoters such as acetone, dimethyl sulfoxide, ethanol, or fert-butanol [65]. 

Dichloromethane [75-09-2] (methylene chloride) is a colorless, highly volatile, neutral liquid with a characteristic odor. It is insoluble in water but miscible with organic solvents. It has a very good solvency for many organic substances, such as fats, oils, waxes, and resins. Bitumen, rubber, chlorinated rubber, polystyrene, postchlorinated poly(vinyl chloride), vinyl chloride copolymers, polyacrylates, and cellulose esters are also soluble. The solubility spectrum can be expanded by adding other solvents. A mixture of methanol or ethanol and dichloromethane is a good solvent for cellulose ethers and acetyl cellulose. Cellulose nitrate is, however, insoluble. 

Propanol [71-23-8] (1-propanol) is a colorless liquid that is soluble in water and miscible with organic solvents. It has better dissolution properties than ethanol for fats and oils, and dissolves polar resins in the same way as ethanol. Cellulose nitrate and poly(vinyl acetate) are, however, almost insoluble. For economic reasons propanol is of only limited use as a solvent, and is a starting material for esters. 

The breakdown of the bond C-X with the formation of the X ion is relatively easy. It depends on the structure of the initial halogenated derivative. Distinctions between the different organic halides may be made. They are based on their reactivity with silver nitrate in ethanol. Three groups are distinguished ... 

Fig. 27. Viscosity vs. IL molar fraction for four systems with ethanol and organic or nitrate anions.

Cyclohexanoae is miscible with methanol, ethanol, acetone, benzene, / -hexane, nitrobenzene, diethyl ether, naphtha, xylene, ethylene glycol, isoamyl acetate, diethylamine, and most organic solvents. This ketone dissolves cellulose nitrate, acetate, and ethers, vinyl resias, raw mbber, waxes, fats, shellac, basic dyes, oils, latex, bitumea, kaure, elemi, and many other organic compounds. 

Organic compounds containing halogen react with ethanolic silver nitrate in the following order of decreasing reactivity ... 

In the reversed phase system, buffers are used most often as the mobile phases with small amount of organic modifiers. The use of buffers as the mobile phases has increased the efficiency of the resolution. Ammonium nitrate, triethylammonium acetate (TEAA), and sodium citrate buffers have been used very successfully. A variety of organic modifiers have been used to alter selectivity [2,5,22], Acetonitrile, methanol, ethanol, 2-propanol, and THF have shown good selectivities for various analytes. In the reversed-phase mode, the amount of organic modifiers is typically low, usually of the order of 10-20%. The typical starting composition of the mobile phase is an organic modifier-buffer... 

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