Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na4)

CAS NO.3794-83-0 (4-Na),                       Dequest 2016 

29329-71-3 (x-Na)                              Dequest 2016DG

Synonyms: Tetrasodium etidronate

Molecular Formula: C2H4O7P2Na4                       Molecular weight: 294 

Properties and Use

   HEDP•Na4 is the sodium salt of HEDP，is an good scale inhibitor for calcium carbonate，it can be used in low pressure boiler water system, circulating water system, industrial and municipal cleaning water system and swimming pool.。

   The solid HEDP•Na4 is white powder，soluble in water，easily deliquescence，Convenient Transport，sui   table for use in winter and freezing districts. HEDP•Na4 is belong to Organic phosphate salt acid scale and corrosion inhibitor，can form stable complex with Fe, Cu and Zn ions, it can dissolve the oxides on metal surface, it has good scale and corrosion inhibition effect under 250℃.

Phosphonates Antiscalants Specification:

Items	Index
Appearance	White powder	Colorless to yellowish transparent liquid
Active content (HEDP)%	≥ 56.0	20.3-21.7
Active content (HEDP•Na4)%	≥ 79.9	29.0-31.0
Fe3+    μg/g                    ≤	35.0	20
Moisture，%                    ≤	15	--
Density (20℃)g/cm3	--	1.26-1.36
PH (1% water solution)	11.0-12.0(1%aqueous solution)	10.0-12.0( stoste)

Vcycletech DTPMPA Application scope and method of use：

   HEDP•Na4 is widely used in circulating cool water system, medium and low pressure boiler, oil field wat   er pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurg   y, fertilizer, etc.. In light woven industry, HEDP•Na4 is used as detergent for metal and nonmetal. In dyeing industry, HEDP•Na4 is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP•Na4 is used as chelating agent. Daily chemicals additive。 

Package and Storage:

   Liquid: plastic drum，30kg or 250kg, Solid: 25kg/bag,customers’requirement. Storage for ten months in s   hady room and dry place. 

Safety Protection:

   HEDP•Na4 Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.

You can click Vcycletech to get more information.

 

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