Ethylene diamine tetracetic acid

Determination. The most accurate (68) method for the deterrnination of copper in its compounds is by electrogravimetry from a sulfuric and nitric acid solution (45). Pure copper compounds can be readily titrated using ethylene diamine tetracetic acid (EDTA) to a SNAZOXS or Murexide endpoint. lodometric titration using sodium thiosulfate to a starch—iodide endpoint is one of the most common methods used industrially. This latter titration is quicker than electrolysis, almost as accurate, and much more tolerant of impurities than is the titration with EDTA. Gravimetry as the thiocyanate has also been used (68). 

To 1,000 g of the crude reaction product a re added 264g of ethylene diamine tetracetic acid. The mixture is preferably heated to incipient boiling to increase the rate of reaction,and then the mixture is allowed to cool and crystallize. The crystals formed are filtered off, washed with the smallest possible amount of ice water, and dried to a constant weight, which is 452 g. 

The rate of peroxide decomposition and the resultant rate of oxidation are markedly increased by the presence of ions of metals such as iron, copper, manganese, and cobalt [13]. This catalytic decomposition is based on a redox mechanism, as in Figure 15.2. Consequently, it is important to control and limit the amounts of metal impurities in raw rubber. The influence of antioxidants against these rubber poisons depends at least partially on a complex formation (chelation) of the damaging ion. In favor of this theory is the fact that simple chelating agents that have no aging-protective activity, like ethylene diamine tetracetic acid (EDTA), act as copper protectors. 

Ethylene Diamine Tetracetic Acid and Nitriloacetic Acid. . . ... 

Aliphatic hydrocarbons, triazine, substituted urea type and phenoxyacetic acid types of herbicides, Fluazifop and Fluazifop-butyl herbicides, ethylene diamine tetracetic acid salts in soil, aliphatic and polyaromatic hydrocarbons, phthalate esters, various organosulphur compounds, triazine herbicides, optical whiteners, mixtures of organic compounds and organotin compounds in non-saline sediments, aromatic hydrocarbons, humic and fulvic acids and mixtures of organic compounds in saline sediments and non-ionic surfactants and cobalamin in sludges. 

Singhal et al. [78, 79] have described a titrimetric method for the determination of low levels of Oxamyl residues in soils. Their investigations revealed that after hydrolysis Oxamyl gave a brown precipitate with carbon disulphide and an alkaline solution of copper(II) sulphate. This reaction suggested a procedure for the determination of Oxamyl by titration with ethylene diamine tetracetic acid of the copper remaining unreacted to the 1-(2 pyridylazo)-2-naphthol end-point indicator). The following stoichiometric reaction appeared to occur between Oxamyl and the reagents ... 

Waggot and Britcher [38] have discussed experimental considerations in the determination of organic carbon content of sewage effluent. Close attention is paid to the determination of particular classes of organic compounds in sewage including carbohydrates, amino acids, volatiles, steroids, phenols, surface active materials, fluorescent materials, organochlorine pesticides and ethylene diamine tetracetic acid. 

Compound Name Ethylene Diamine Tetracetic Acid Ethylene Oxide Ethyl Acetate Ethyl Ether Ethyl Formate Ethyl Formate Ethylhexaldehyde Ethylhexaldehyde Ethylhexaldehyde 2-Ethyl Hexanol 2-Ethyl Hexanol 2-Ethyl-3-Propylacbolein 2-Ethylhexyl Acrylate, Inhibited 2-Ethyl Hexanol 2-Ethylhexyl Acrylate, Inhibited Ethyl Hexyl Tallate 2,4,5-T(esters)... 

Tetra sodium salt of ethylene diamine tetracetic acid. 40% aqueous solution. Sequesters metal ions as described for TETRALON ACID above and would be chosen for economy and where liquids are suitable. 

Partially neutralised ethylene diamine tetracetic acid. 

Ethylene diamine tetracetic acid Ethylene diamine tetracetic acid TETRALON Allied Colloids... 

Ethylene Glycol Monoethyl Ether Ethyleneimine Ethylene Diamine Tetracetic Acid Ethylene Oxide... 

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