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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 250ºC. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. 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.
| Active content (HEDP)% | 58.0-62.0 |
| pH (1% water solution) | 2.0 max |
| Density (20ºC)g/cm3 | 1.40 min |
| Ca sequestration (mg CaCO3/g) | 500.0 min |
| Fe, mg/L | 20.0 max |
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.
HEDP liquid: 200L plastic drum,IBC(1000L),customers' requirement.
Storage for twelve months in room shady and dry place.
Beijing Lianfa Mtone Technology Co., Ltd. focuses on the research and development, production and service of industrial special chemicals. After more than ten years of innovation and investment, Maitong Technology has become an international leading service provider of industrial special chemicals, with efficient production base and professional technical research and development service team, to provide customers with comprehensive products and service solutions.
Beijing Lianfa Mtone Technology Co., Ltd. provides customized product solutions to meet the specific needs of customers in various industries, including coal-fired power generation, petrochemical, wind power, waste power, municipal solid waste, paper printing and dyeing, sewage treatment, industrial and home decoration.
