
CAS Nama 2809-21-4
Tātai rāpoi: C2H8O7P2 Te taumaha ngota: 206.02
Tātai Hanganga:
Āhuatanga:
HEDP he kai aukati waikura waikawa organophosphoric. Ka taea e ia te tarai me nga katote Fe, Cu, me te Zn hei hanga i nga pūhui chelating pūmau. HEDP e whakaatu ana i te pai o te tauine me te waikura i raro i te pāmahana 250 ℃. HEDP he pai te pumau matū i raro i te uara pH teitei, he uaua ki te hauwai, he uaua ki te pirau i raro i nga tikanga marama me te wera. He pai ake te whakamaaramatanga o te waikawa/waikawa me te maaota i tera o etahi atu waikawa organophosphoric (tote). 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.
Ko te ahua totoka o 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.
Whakatakotoranga:
Nga taonga |
Taurangi |
|
Te ahua |
He maama, he wairewa wai kore tae ki te kowhai kowhai |
Te paura tioata ma |
Ihirangi hohe (HEDP), % |
58-62 |
90.0 min |
Ihirangi hohe (HEDP·H2O), % |
- |
98.0 min |
Te waikawa Phosphorous (hei PO33-), % |
2.0 mōrahi |
0.8 te teitei |
Te waikawa Phosphoric (hei PO43-), % |
0.8 te teitei |
0.5 mōrahi |
Chloride (hei Cl-)% |
0.02 te teitei |
0.01 mōrahi |
pH (1% wairewa wai) |
2.0 mōrahi |
2.0 mōrahi |
Kiato (20 ℃), g/cm3 |
1.40 min |
- |
Fe, mg/L |
20.0 mōrahi |
10.0 mōrahi |
Tae APHA (Hazen) |
40.0 te teitei |
- |
Ca Sequestration (mg CaCO3/g) |
500.0 min |
|
Whakamahinga:
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.
Te takai me te rokiroki:
HEDP liquid: 200L plastic drum,IBC(1000L),customers’ requirement.
HEDP solid: 25kg/bag,customers’ requirement.
Te rokiroki mo te tekau ma rua marama i roto i te ruma marumaru me te wahi maroke.
Te haumaru me te whakamarumaru:
He waikawa te HEDP. Kia tupato ki te tiaki mahi i te wa e mahi ana. A ape i te pa ki nga kanohi me te kiri. Mena ka pakaru ki te tinana, me horoi tonu ki te nui o te wai.
kupu taurite:
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;
Waikawa Oxyethylidenediphosphonic(OEDP)
Hydroxyethylidene diphosphonic acid (waikawa HEDP)