HEDP 1-Hydroxyethylidene-1, 1-diphosphonic Acid(HEDP;HEDP powder;HEDP Low arsenic;HEDP low heavy metal;HEDP.NA4)
Product ID: cas no:2809-21-4
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Application Notes: Noted for its excellent CaCO3 scale inhibition and chlorine stability is based on hydroxyl ethylidene (1, 1-diphosphonic acid) and is approved for applications in which boiler steam comes in contact with food.
Recommended Uses: Cooling water treatment, boiler treatment, I & I Cleaners, swimming pool, stain prevention, metal ion control.
Recommended Uses: Cooling water treatment, boiler treatment, I & I Cleaners, swimming pool, stain prevention, metal ion control.
Specifications
- HEDP 60%
- Appearance Water white to pale yellow liquid
- Active Acid (%) 60.0 min
- Phosphorous acid as PO33- (%) 2.0 max
- Phosphorous acid as PO43- (%) 0.8 max
- Chloride (as Cl-, %) 0.5 max
- Sequestrant value (mgCaCO3/g ) 500 min
- pH(1% solution) 2.0 max
- Density at 20°C, g/cm3 1.440 min
- Iron, as Fe (ppm) 35.0max
- Colour APHA (Hazen) 80 max
- package
- 250kgs/drum for liquid HEDP;
- 25kgs/bag for powder HEDP
- liquid HEDP also can be packed in IBC drums or ISOTANKS.
- recommended uses
- HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent. The dosage of 1-10mg/ L is preferred as scale inhibitor, 10-50mg/ L as corrosion inhibitor, and 1000-2000mg/ L as detergent. Usually, HEDP is used together with polycarboxylic acid.
Features
- cas no
- 2809-21-4
- appearance
- HEDP 60%:water white to pale yellow liquid
- HEDP powder:white crystalline powder
- HEDP Low arsenic:clear colourless to pale tan liquid,free from foreign matter
- HEDP low heavy metal：clear colourless to pale tan liquid,free from foreigh matter.
- HEDP.NA4:water white to pale yellow liquid
- HEDP.NA4 powder:white crystal powder
Certificate
- ISO9001:2000andISO14001
Main Products
phosphonates,polymers,corrosion inhibitors,biocides,h3po3