CAS No. 29329-71-3
Molecular Formula: C2H7O7P2Na
Molecular weight: 228
HEDP•Na is an organophosphonic
acid corrosion inhibitor, it can chelate with Fe, Cu, and Zn
HEDP•Na can dissolve
the oxidized materials, it has good scale and corrosion
inhibition effects even under 250℃, it is stable under high
pH value, not easy to be hydrolyzed, not easy to be
decomposed under normal light and heat condition, its
acid/alkaline and chloride oxidation tolerance are better
than that of other organophosph-onic acids.
HEDP•Na can form six-ring chelating compounds with metal
ions in water system, Ca2+ in particular.
has good scale inhibition effects and obvious dissolution
threshold effects. When used with other Water Treatment
Chemicals, the synergistic effects is better.
HEDP•Na is suitable for acidic
scale inhibitor and detergent, can be used for metal surface
Colorless or yellowish transparent liquid
|PH (1% water
|Density (20℃) g/cm3
is used in circulating cool water system, medium and low
pressure boiler, oil field water pipelines as scale and
corrosion inhibitor in fields such as power plant, chemical
industry, metallurgy, fertilizer, etc.. In light woven
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.
When used as scale inhibitor, the dosage
2-20mg/L is preferred, when used as corrosion inhibitor, the
dosage 20-100mg/L is preferred, when used as cleaning agent,
the dosage 1000-2000mg/L is preferred. Usually,
HEDP•Na is used together with polycarboxylic acid .
Package and Storage:
200L plastic drum,IBC(1000L),customers’ requirement. Storage for ten months in shady room and dry place.
Acidity, Avoid contact with eye and skin,
once contacted, flush with water.