Edtmps Ethylene diamine tetra (methylene phosphonic acid) sodium (edtmps, zf113) [cas no.] 1429-50-1 dequest: 2040 Molecular formula: c6h12o12n2p4na8 molecular weight: 612.13 Structural formula: Properties: This product is nitrogenous organic polyphosphonic acid, which is a part of cathodic corrosion inhibitor, its property is 3~5 times better than that of inorganic polyphosphate. It can be fully dissolved in water, innocuous and none pollution to environment, has good chemical stability and thermal resistance. It shows excellent scale inhibition property under temperature 200gs? it can dissociate into 8 positive-negative ions, thus can chelate with more than two metal ions to form more than two polymer reticulation complex, the complex can be quickly dissolved in water to destroy the normal crystallization of calcium scale. Edtmps shows better antiscale effects to calcium sulfate and barium sulfate. Specification: meet criterion of hg/t 3538-2003 Items Index Appearance Clear yellow to umber transparent viscous liquid Package and storage: 25kg in plastic barrel, or confirmed by clients. Storage for ten months in room shady and dry place.