[English Name]: Ethylene diamine tetraacetic acid (EDTA)
[Molecular Fomula]: C10H16N2O8
[Molecular Weight]: M=292.24
[CAS No]: 60-00-4
[Properties]: white crystal powder melting point 240℃(decomposition) insoluble in cold water ,alcohol and general organic solvent, slightly soluble in hot water, but soluble in sodium hydroxide, sodium carbonate and ammonia solution.
[Quality Index]: (Q/24SJK02-2009 Quality standard)
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Purity%
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≥99.5%
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Chloride(Cl)%
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≤ 0.01%
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Sulfate(SO4)%
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≤ 0.03%
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Metal chelate(Pb)%
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≤ 0.001%
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Iron(Fe)%
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≤ 0.001%
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Dry and loss(103-107℃)%
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≤ 0.2%
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Chelate : mgCaCO3/g
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339 min
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NTA%
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≤ 0.1%
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Appearance
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White crystal powder
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Application Method:
An agent for complexation, EDTA is mainly used for water treatment, as an additive to detergent, a chemical for photography, paper-making and oil-field. It is also used as detergent for boiler cleaning and reagent in chemical analysis.
1. High molecular chemical industry: EDTA is used as polymetization activator for butyl bezene latex, and polyreaction terminator in acrylic fibre production.
2.Daily chemicals: EDTA is used as additive to detergent, skin cream and hair-conditioner.
3.Paper-making: EDTA is used for treating the steamed fibre. It will promote the whiteness of paper and reduce the incrustation in the steamer.
4.Pharmaceutical industry: Through cyclopolymerization with methyl amide, EDTA is made into ethyl amide, a remedy for psoriasis. It is also a stablizer for some vaccines and an antihaemoagglutinin.
5. Textile dyeing and printing: EDTA will promote colour ability of the dyestuff and brightness of the dyed fabric.
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