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 2016DGSynonyms: Tetrasodium etidronateMolecular Formula: C2H4O7P2Na4 Molecular weight: 294 Structural Formula:
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Product Description

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:

HEDP•Na4 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 HEDP•Na4 is white powder，soluble in water，easily deliquescence，Convenient Transport，sui table for use in winter and freezing districts. HEDP•Na4 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：

HEDP•Na4 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, HEDP•Na4 is used as detergent for metal and nonmetal. In the dyeing industry, HEDP•Na4 is used as a peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP•Na4 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:

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