Product Description

HEDP, HEDPA, HEDP. Na, HEDPNa2, HEDPKx

HEDP/HEDPA is an organophosphoric acid corrosion inhibitor.
HEDP/HEDPA can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.
HEDP/HEDPA has good chemical stability under high pH value.
HEDP/HEDPA can be used as cleaning agent in electronic fields and as additives in daily chemicals.
HEDP/HEDPA can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular
HEDP/HEDPA can be used as cleaning agent in electronic fields and as additives in daily

HEDP. Na is an organophosphonic acid corrosion inhibitor.
HEDP. Na can chelate with Fe, Cu, and Zn ions.
HEDP. Na has good scale and corrosion inhibition effects.
HEDP. Na is suitable for acidic scale inhibitor and detergent, can be used for metal surface treatment.
HEDPNa2 is an organophosphonic acid corrosion inhibitor.
HEDPNa2 it can chelate with Fe, Cu, and Zn ions, it can dissolve the oxidized materials
HEDPNa2 can form six-ring chelating compounds with metal ions in water system
HEDP. Na4 is the sodium salt of HEDP.
HEDP. Na4 is an good scale inhibitor for calcium carbonate.
HEDP. Na4 it can be used in low pressure boiler water system, circulating water system, industrial and municipal cleaning water system and swimming pool.

HEDPNa4 is used as detergent for metal and nonmetal.
HEDP. Kx is the potassium salt of HEDP
HEDP. Kx has better dissolution ability than that of sodium salt under neutral condition
HEDP. Kx is a good scale inhibitor for calcium carbonate, HEDP. Kx can be used in metal corrosion inhibitor, antifouling agent of swimming pool, metal cleaning, volume cleaning, iron dust controlling, metal pretreatment, low pressure boiler water treatment and circulating water treatment, etc.

HEDP/HEDPA Specification Appearance  
Colorless or light yellow transparent liquid  /White crystal powder  
HEDP/HEDPA Active content (HEDP)%  
58.0-62.0  89.0 min  
HEDP/HEDPA Phosphorous acid (as PO33-)%
2.0 max  0.5 max  
HEDP/HEDPA Phosphoric acid (asPO43- )%
0.8 max  0.5 max  
HEDP/HEDPA Chloride (as Cl-)%  
0.01 max  0.01 max  
HEDP/HEDPA pH (1%   solution)  
2 max  2 max  
HEDP/HEDPA Density (20 C)g/cm3  
1.40  -  
HEDP/HEDPA Fe ion ppm  
10 max  20 max  
HEDP/HEDPA Colour APHA (Hazen)  
40 max  -

HEDP. Na Specification items index
Appearance Colorless or light yellow transparent liquid
HEDP. Na Active content (HEDP)%
19.0-21.0
HEDP. Na Fe ppm
20 max
HEDP. Na pH (1% water solution)
2.3-2.9
HEDP. Na Density (20 C) g/cm3
1.11-1.21

HEDPNa2 SpecificationAppearance  
Colorless to light yellow transparent liquid/  White powder  
HEDPNa2 Active component (HEDP)%  
16.5 min  74.0-79.0  
HEDPNa2 Active component (HEDP. Na2)%  
20.0 min  89.8 min  
HEDPNa2 density (20 C)g/cm3  
1.12-1.22  --  
HEDPNa2 Fe ppm  --  
35 max  
HEDPNa2 Phosphorous acid (as PO33-)%  --  
3 max  
HEDPNa2 Dry weight loss %  --  
3-6  
HEDPNa2 pH (1% water solution)  
4.0-6.0  4.0-6.0  

HEDP. Na4SpecificationAppearance  
White powder/  Colorless to light yellow transparent liquid  
HEDP. Na4Active component (HEDP)%  
56.0 min  20.3-21.7  
HEDP. Na4Active component (HEDP. Na4)%  
79.9 min  29.0-31.0  
HEDP. Na4Total phosphoric acid (as PO43-) %  
52.0-54.0  18.4-20.4  
HEDP. Na4Fe ppm  
35.0 max  20 max  
HEDP. Na4Dry weight loss %  
15 max  --  
HEDP. Na4density (20 C)g/cm3  --  
1.26-1.36  
HEDP. Na4pH  11.0-12.0 (1% water solution)  
10.0-12.0 (as it)  

HEDP. Kx Specification Appearance  
Colorless or light yellow transparent liquid  
HEDP. Kx Active component (HEDP)%  
26.0-30.0  
HEDP. Kx Total phosphoric acid (PO43-) %
24.7-26.7  
HEDP. Kx Fe ppm  
20 max  
HEDP. Kx Density (20 C) g/cm3  
1.30-1.40  
HEDP. Kx pH (1% water solution)  
6.0-8.0.