
CAS No. 2809-21-4
Molecular formula: C2H8O7P2 Molecular kulemera: 206.02
Ndondomeko Yopanga:
Katundu:
HEDP ndi organophosphoric acid corrosion inhibitor. Ikhoza kusungunula ndi Fe, Cu, ndi Zn ions kuti ipange mankhwala okhazikika a chelating. Ikhoza kusungunula zinthu zowonongeka pazitsulozi. HEDP amawonetsa mulingo wabwino kwambiri komanso zoletsa zowonongeka pansi pa kutentha kwa 250 ℃. HEDP ali ndi kukhazikika kwamankhwala kwabwino pansi pa mtengo wapamwamba wa pH, wovuta kuyika hydrolyzed, komanso wovuta kuwola pansi pa kuwala wamba ndi kutentha. Kulekerera kwake kwa asidi / alkali ndi klorini kwa okosijeni ndikwabwino kuposa kwa ma organophosphoric acid (mchere). 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.
Mkhalidwe wolimba wa 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.
Kufotokozera:
Zinthu |
Mlozera |
|
Maonekedwe |
Choyera, Chopanda Mtundu mpaka chotumbululuka chachikasu chamadzimadzi |
White crystal ufa |
Zomwe Zikuchitika (HEDP), % |
58-62 |
90.0 min |
Zomwe zilipo (HEDP·H2O), % |
- |
98.0 mphindi |
Phosphorous acid (monga PO33-), % |
2.0 max |
0.8 mx |
Phosphoric acid (monga PO43-), % |
0.8 mx |
0.5 max |
Chloride (monga Cl-)% |
0.02 max |
0.01 max |
pH (1% yothetsera madzi) |
2.0 max |
2.0 max |
Kachulukidwe (20 ℃), g/cm3 |
1.40 min |
- |
Fe, mg/L |
20.0 max |
10.0 max |
Mtundu APHA (Hazen) |
40.0 max |
- |
Ca Sequestration (mg CaCO3/g) |
500.0 min |
|
Kagwiritsidwe:
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.
Kupaka ndi kusunga:
HEDP liquid: 200L plastic drum,IBC(1000L),customers’ requirement.
HEDP solid: 25kg/bag,customers’ requirement.
Kusungirako kwa miyezi khumi ndi iwiri m'chipinda chamthunzi ndi malo owuma.
Chitetezo ndi Chitetezo:
HEDP ndi acidic. Samalani chitetezo cha ogwira ntchito panthawi ya ntchito. Pewani kukhudzana ndi maso ndi khungu. Ngati splashes pa thupi, muzimutsuka nthawi yomweyo ndi madzi ambiri.
Mawu ofanana ndi mawu:
HEDP;HEDP(A);HEDPA;
Etidronic Acid;
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid;
Hydroxyethylidene-1,1-diphosphonicacid(HEDP);
1-Hydroxyethylidenediphosphonic Acid;
Hydroxyethylidene Diphosphonic acid(HEDP);
1-Hydroxy-1,1-Ethanediyl ester;
Oxyethylidenediphosphonic Acid (OEDP)
Hydroxythylidene diphosphonic acid (HEDP acid)