Liquid decomposition products with water

Ethylene Diamine, NH2CH2CH2NH2, is the lowest member of the series of diamines. It is a liquid which boils at 116.5°, and has a weak ammoniacal odor. It may be prepared from ethylene bromide and ammonia. The reactions of ethylene diamine are analogous to those of other primary amines. It differs from these, however, in that it forms a stable addition-product with water which may be distilled without decomposition. The substance is, in all probability, a derivative of ammonium hydroxide with the structure,—... 

Noncombustible liquid. Its reaction with water can be violently exothermic, the decomposition products being phosphorus acid and hydrochloric acid ... 

In the case of decomposition of the water - when a small amount of water is found in either a gas or a liquid, it may be removed by decomposing it and separating the products formed. For example, ether can be dried by placing it in contact with metallic sodium. In the reaction, caustic soda is formed, which clings to the surface... 

Much effort has been devoted to the applicaton of electrophoretic techniques for the analysis of dyes and dye decomposition products in industrial waste-waters. CZE with DAD and MS detection was employed for the determination of reactive dyes in spent dye-baths and waste-waters. The chemical structure of the dyes included in the experiments are shown in Fig. 3.149. Liquid samples were purified and preconcentrated by SPE. ODS cartridges were conditioned by washing with two bed volumes of methanol, four bed volumes of water and two bed volumes of 5 mM tetrabutylammonium phosphate. Aliquots of 10 - 30 ml were loaded and the cartridges were washed with 2 ml of water. Analytes were eluted with 2 ml of methanol-water (70 30, v/v). Untreated fused-silica capillaries (110 cm and 57 cm X 50 /im i.d.) were coupled to MS and DAD. The running... 

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