
CAS No. 2809-21-4
Formula molekiola: C2H8O7P2 lanjan'ny molekiola: 206.02
Formula ara-drafitra:
Properties:
HEDP dia organophosphoric asidra inhibitory harafesiny. Afaka chelate miaraka amin'ny ion Fe, Cu, ary Zn izy mba hamorona fitambarana chelating maharitra. HEDP mampiseho mizana tsara sy ny harafesiny inhibition vokany eo ambanin'ny mari-pana 250 ℃. HEDP manana fahamarinan-toerana simika tsara eo ambanin'ny sandan'ny pH avo, sarotra ny hydrolyzed, ary sarotra ny simba amin'ny hazavana sy hafanana mahazatra. Ny fandeferana asidra/alkali sy klôro ao aminy dia tsara kokoa noho ny an'ny asidra organophosphoric hafa (sira). 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.
Ny fanjakana mafy orina ny 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:
IREO SINGA NASIANA |
Fanondroana |
|
Bika Aman 'endrika |
Vahaolana mazava, tsy misy loko hatramin'ny mavo mavo |
Vovoka kristaly fotsy |
Votoaty mavitrika (HEDP), % |
58-62 |
90.0 min |
Votoaty mavitrika (HEDP·H2O), % |
- |
98.0 min |
Asidra phosphore (toy ny PO33-), % |
2.0 max |
0,8 max |
asidra phosphoric (toy ny PO43-), % |
0,8 max |
0,5 max |
Chloride (toy ny Cl-)% |
0,02 max |
0,01 max |
pH (1% vahaolana rano) |
2.0 max |
2.0 max |
Haavo (20 ℃), g/cm3 |
1.40 min |
- |
Fe, mg/L |
20.0 max |
10.0 max |
Loko APHA (Hazene) |
40.0 max |
- |
Fametrahana Ca (mg CaCO3/g) |
500.0 min |
|
Fampiasana:
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.
Fonosana sy fitahirizana:
HEDP liquid: 200L plastic drum,IBC(1000L),customers’ requirement.
HEDP solid: 25kg/bag,customers’ requirement.
Fitehirizana mandritra ny roa ambin'ny folo volana ao amin'ny efitrano maizina sy maina.
Fiarovana sy fiarovana:
Ny HEDP dia asidra. Tandremo ny fiarovana ny asa mandritra ny fandidiana. Fadio ny mifandray amin'ny maso sy ny hoditra. Raha mipitika amin’ny vatana ilay izy dia kobanina amin’ny rano betsaka avy hatrany.
mitovitovy:
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 asidra (OEDP)
Hydroxyethylidene diphosphonic acid (HEDP asidra)