INDEX alkaline hydrolysis

Polytetrafluoroethylene decomposition products thermal decomposition of the fluorocarbon chain in air leads to the formation of oxidized products containing carbon, fluorine and oxygen. Because these products decompose in part by hydrolysis in alkaline solution, they can be quantitatively determined in air as fluoride to provide an index of exposure. No TLV is recommended pending determination of the toxicity of the products, but air concentration should be minimal. (Trade names Algoflon, Fluon, Teflon, Tetran.)... 

Alkaline phosphomonoesterase Hydrolysis of phosphoric acid esters Index of pasteurization... 

Imidodisulfuric acid chloride forms colorless crystals which hydrolyze very rapidly in moist air they melt at 37°, boil at 115°/4 mm. and at 55°/0.03 mm., and have a refractive index ny> = 1.4948. The compound is readily soluble in organic solvents such as benzene or nitrobenzene. Hydrolysis in alkaline medium leads to imidodisulfate in acidic medium, sulfamic acid and sulfuric acid are formed. 

When starch is treated with hot alkaline solutions, it behaves in the manner to be expected of a material composed of an alkali-labile fraction and an alkali-stable fraction. Starches from different sources vary in the relative amounts of these two components, and, therefore, starches can be characterized by their alkali lability. Alkali lability of a starch can be expressed as its alkali number, which is an empirical expression of the acids produced from the terminal, reducing group by the action of alkali. The alkali number (and, therefore, the alkali lability) increases progressively during acid hydrolysis. - Hence, the alkali number is an index of molecular size for linear molecules. 

At alkaline treatment of PETP electrical resistance of filaments does not change [29], because as a result of hydrolysis on a surface of filaments we have all same PETP (Table 2). Stress load and stress elongation during alkaline treatment of a filament are reduced (Table 2), however alkali treatment considerably reduces dry dirt adherence of a fabric (Kubelka-Munk index decreases with 1.00 up to 0.6) It is ought to mark that the alkaline treatment results in considerable improvement of a fabric dye color deepness [29]. Using the data of kinetic researches, it is possible to find optimal conditions of alkaline processing of a PETP fabric [2,5.29]. That the destmction happened at the surface layer, specific tensile a keeps almost constant value ... 

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