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The Smith Chemical Company was started in G. Frederick Smith's garage in Urbana, Illinois as a result of his use of magnesium perchlorate as a super drying agent. [ 9 ] [ 10 ] [ 13 ] Smith enlisted the help of his brothers Allyne (who studied engineering at Ohio State ) and Clarence (who worked for a local newspaper).
The resulting aminopolycarboxylic acid, upon ionization of the carboxylic acid groups, is a high affinity chelating agent for di- and trivalent cations. The tetracarboxylic acid was first reported in 1976. [2] At the time of its discovery DOTA exhibited the largest known formation constant for the complexation of Ca 2+ and Gd 3+ ions. Modified ...
The most common means for removing water hardness rely on ion-exchange resin or reverse osmosis.Other approaches include precipitation methods, such as fluidized bed pellet softening, [6] and sequestration by the addition of chelating agents.
It is used as a source of the chelating agent EDTA 4-. A 1% aqueous solution has a pH of approximately 11.3. When dissolved in neutral water, it converts partially to H 2 EDTA 2-. Ethylenediaminetetraacetic acid is produced commercially via the intermediacy of tetrasodium EDTA. [1] Ethylenediaminetetraacetic acid is the acidic form of ...
It was estimated that a commercial-size swimming pool of 220,000 gallons would contain about 20 gallons of urine, equivalent to about 2 gallons of urine in a typical residential pool. [6] Pathogenic contaminants are of greatest concern in swimming pools as they have been associated with numerous recreational water illnesses (RWIs). [7]
Enterobactin, produced by E. coli, is the strongest chelating agent known. The marine mussels use metal chelation, especially Fe 3+ chelation with the Dopa residues in mussel foot protein-1 to improve the strength of the threads that they use to secure themselves to surfaces. [10] [11] [12]
The conjugate base of NTA is a tripodal tetradentate trianionic ligand, forming coordination compounds with a variety of metal ions. [8]Like EDTA, its sodium salt is used for water softening to remove Ca 2+.
Salt water chlorination is a process that uses dissolved salt (1000–4000 ppm or 1–4 g/L) for the chlorination of swimming pools and hot tubs.The chlorine generator (also known as salt cell, salt generator, salt chlorinator, or SWG) uses electrolysis in the presence of dissolved salt to produce chlorine gas or its dissolved forms, hypochlorous acid and sodium hypochlorite, which are already ...
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