Tetra sodium ( 1-HydroxyEXTylidene) Diphosphonate (HEDP.Na4)

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Fax: +86-20-22309808
Tel:+86-20-22302666
E_mail: dc@gzdiecheng.com mrpeng@gzdiecheng.com

Products

Molecular formula: C₂H₆O₇P₂Na₄
Molecular Weight: 294
Structural formula:

ONa OH ONa

| | |

NaO —P — C — P — ONa

‖ | ‖

O CH3 O

Properties:

HEDP.Na4 is the sodium salt of HEDP and an excellent calcium carbonate scale inhibitor. It is mainly used in the metal corrosion inhibition of low pressure boiler water treatment, circulating water treatment, industrial municipal cleaning water and pool sterilization.

HEDP.Na4 is widely used in the scale and corrosion inhibition in power, chemical, metallurgy, fertilizer and other industrial circulating cooling water. In textile industry, it is used as metal and nonmetal detergent. Peroxide stabilizer and fixing agent in printing and dyeing industry, non-cyanide electroplating complexing agent and daily chemical additive.

Spec.

Item	Liquid product index	Solid product index
Appearance	Colorless to light yellow Liqui	White to light yellow Powder
Active matter (acid)%	22.0—24.0	≥57.0
Active matter (salt)%	32.0—34.0	≥82.0
Phosphate (PO₄^3-), % ≤	0.5	0.5
Chloride (Cl^-), % ≤	1.0	1.0
Iron ions, ppm ≤	20	35
PH (1% aqueous solution) ≤	11.0-12.0	10.0-12.0
Density (20℃)g/cm³ ≥	1.31	/

Application:
HEDP.Na4 is widely used in the scale and corrosion inhibition in power, chemical, metallurgy, fertilizer and other industrial circulating cooling water. In textile industry, it is used as metal and nonmetal detergent. Peroxide stabilizer and fixing agent in printing and dyeing industry, non-cyanide electroplating complexing agent and daily chemical additive.
Packing and Storage:
Plastic woven bag lined with polythene bag, net weight 25kg or according to customer requirements. Stored in dry and ventilation indoor. Shelf life is 10 months.

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