Advanced development concepts, excellent management and excellent production management team have enabled our company to grow and improve, and it has become a leading DBDPE, 2-Hydroxy Phosphonoacetic Acid(HPAA), BPO manufacturer in China. With a rapid advancement and our buyers come from many countries in the world. In the increasingly fierce market competition, brand resources become a powerful means of enterprise competition, we continue to maintain brand resources, drive our economic development. We continue to transform advanced technologies at home and abroad into competitive products to meet the ever-increasing customer needs.
Chemical name: | 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid | ||
CAS No.: | 2809-21-4 | ||
Molecular formula/weight: | C2H8O7P2=206.02 | ||
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℃. 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. The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals. | |||
SPECIFICATION: | |||
Items | Liquid | Solid | |
Appearance | Colorless or pale yellow solution | White crystalline powder | |
Active content | 60.0% min | 90.0 min. | |
Phosphorous acid (as PO33-) | 2.0% max. | 0.8 max | |
Phosphoric acid (as PO43- ) | 0.8% max. | 0.5 max | |
Chloride (as Cl-) ppm | 100 max | 100 max | |
PH value of 1% solution | 2.0 max. | 2.0 max | |
Density (20℃)g/cm3 | 1.44 min | ||
Fe mg/L | 10 max. | 5 max | |
Color(Hazen) | 50 max | ||
Ca sequestration (mg CaCO3/g) | 500 min | ||
APPLICATION: 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. | |||
PACKAGE: Liquid:250 kg net PE drums or 1250kg net IBC. Solid: 25 kg net bags. | |||
Our company regards providing customers with advanced Disodium Salt of 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid HEDP as our responsibility and improving customer work efficiency as our mission. During our service, customers' various technical service requirements can be met as much as possible. We are never satisfied with the status quo, always have a corporate vision in mind, and constantly set new goals and new benchmarks.
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