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1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) CAS No.: 2809-21-4 Character: liquid 58.0-62.0%min;solid 98.0%min Spec. of Liquid 60%min : Appearance: Colorless or pale yellow transparent liquid Active Content(as HEDP):60.0 % min Phosphoric Acid(as PO43):0.8% max Phosphorous Acid(as PO33-):2.0% max Chloride(as Cl):1.0% max Ca chelating value :500.0 mg/g min Density(20°C)3:1.40g/cm min Fe ion :10.0ppm max Colour APHA:40.0max pH (1% solution) @ 25°C:2.0max Usage : HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc. Packing : Liquid: 200kg Plastic Drum, IBC drum                Solid: 25kg bag. Shijiazhuang Yuanchem Imp.& Exp. Corp. Ltd. Telephone : +86-311-87796645 Mobile Phone : +86-13703398740 Fax : +86-311-87735088 E-mail : chengyuan@yuanchem.com URL : www.yuanchem.com         www.yuanchem.cn Street Address : Room 606, Zhongyuan Building, No. 368, Youyi North Street, Shijiazhuang, Hebei, China. Zip : 050071 Copyright(C)2010,Shijiazhuang Yuanchem Imp.& Exp. Corp. Ltd. All Rights Reserved.  Supported by ChemNet ChinaChemNet Toocle Copyright Notice