Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid China Manufacturer

Product Description

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
Structural Formula:

Properties and Use

Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is the sodium salt of HEDP，is a good scale inhibitor for calcium carbonate，it can be used in low-pressure boiler water systems, circulating water systems, industrial, and municipal cleaning water system and swimming pool.

The solid Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is white powder，soluble in water，easily deliquescence，Convenient Transport，sui table for use in winter and freezing districts. Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid belongs to the Organic phosphate salt acid scale. The corrosion inhibitor，can form a stable complex with Fe, Cu, and Zn ions. It can dissolve the oxides on the metal surface. It has a good scale and corrosion inhibition effect under 250℃.

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)

Application scope and method of use：

Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is widely used in circulating cool water system, medium, and low-pressure boiler, oil field water pipelines as scale and corrosion inhibitor in electric power, chemical industry, metallurgy, fertilizer, etc. In the light woven industry, Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is used as detergent for metal and nonmetal. In the dyeing industry, Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is used as a peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is used as a chela acting agent. Daily chemicals additive。

Package and Storage:

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

Safety Protection:

Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid Weak acidity, Avoid contact with eye and skin; once contacted, flush with water.

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