HEDP

Specifications:
1) Chemical name: 1-hydroxyethylidene-1, 1-diphosphonic acid
2) Abbreviation: HEDP
3) CAS No: 2809-21-4
Specifications
1)
HEDP
is widely used in circulating cool water system, oil field water pipelines and boilers for antiscale corrosion inhibition.
HEDP is white crystal powder, soluble in water, prone to absorption of moisture,suitable for frigid situation. This product is an organophosphoric acid corrosion inhibitor, can chelate with Fe, Cu, and Zn ions to form stable chelating compounds, can dissolve the oxidized materials on these metals' surfaces. shows excellent antiscale corrosion inhibition effects under temperature 250
o
C.
2)This product is widely used in circulating cool water system, oil field water pipelines and boilers for antiscale corrosion inhibition in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light weave industry, this product is used as detergent for metal and nonmetal. In dyeing industry, this product is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, this product is used as chelating agent.
3)This is a high pure grade product, especially suitable as cleaning agent in electronic field and commodity additives
items
index
Appearance
Colorless or light yellow transparent liquid
White crystal powder
Active content (HEDP)%
58.0-60.0
89.0 min
Phosphorous acid (as PO
3
3-
)
%
2.0 max
0.5 max
Phosphoric acid (asPO
4
3-
)%
0.8 max
0.5 max
Chloride (as Cl
-
)%
0.01 max
0.01 max
pH (1 solution)
2 max
2 max
Density (20)g/cm
3
1.40
-
Fe ion ppm
10 max
20 max
Colour APHA (Hazen)
40 max
-
Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.