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Factory Supply HEDP from China CAS:2809-21-4 with High Quality
Properties
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds. It can dissolve the oxidized materials on these metals' surfaces.
HEDP shows excellent scale and corrosion inhibition effects under temperature 250°C.
HEDP has good chemical stability under high PH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt).
HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular.
Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
Specification
| ITEM | SPECIFICATION |
| APPEARANCE | COLORL ESS TO LIGHT YELLOW TRANSPARENT LIQUID |
| ACTIVE CONTENT (AS HEDP) % | 60.0-62.0 |
| PHOSPHOROUS ACID (AS PO33-) % | 2.5 MAX |
| PHOSPHORIC ACID (AS PO43-)% | 0.7 MAX |
| PH (1% WATER SOLUTION) | 2.0 MAX |
| DENSITY (20 °C) g/cm3 | 1.44-1.47 |
| IRON ppm | 10 MAX |
| CHLORIDES (AS CL-) ppm . | 100 MAX |
| COLOR (APHA) | 30 MAX |
| SEQUESTRANT VALUE (CACO3)m | 500 MIN |
Products Usage
1. HEDP (Cas No 2809-21-4) Corrosion Inhibitor is used as scale and corrosion inhibition in circulatingcool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc..
2. In light woven industry, HEDP (Cas No 2809-21-4) Corrosion Inhibitor is used as detergent for metal and nonmetal.
3. In dyeing industry, HEDP (Cas No 2809-21-4) Corrosion Inhibitor is used as peroxide stabilizer and dye-fixing agent.
4. In non-cyanide electroplating, HEDP (Cas No 2809-21-4) Corrosion Inhibitor 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 (Cas No 2809-21-4) Corrosion Inhibitor is used together with polycarboxylic acid.
Package And Storage
ATMP liquid:200L plastic drum, IBC(1000L),customers' requirement.
Storage for 12 months in shady room and dry place.
Safety Protection
Acidity, Avoid contact with eye and skin, once contacted, flush with water.