1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP)

Inombolo ye-CAS 2809-21-4

XHUMANA MANJE PDF KHIPHA

Imininingwane

Omaka

Isingeniso esinemininingwane Read More About 1 hydroxy ethylidene 1 1 diphosphonic acid hedp1

CAS No. 2809-21-4

Molecular Formula: C₂H₈O₇P₂ Isisindo se-molecule: 206.02

Ifomula Yesakhiwo:

Read More About corrosion scale inhibitor

Izakhiwo:

I-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. I-HEDP ikhombisa imiphumela emihle kakhulu yesikali kanye ne-corrosion inhibition ngaphansi kwezinga lokushisa elingu-250℃. I-HEDP inokuqina okuhle kwamakhemikhali ngaphansi kwevelu ye-pH ephezulu, okunzima ukuyikhipha nge-hydrolyzed, futhi okunzima ukubola ngaphansi kwezimo ezivamile zokukhanya nokushisa. Ukubekezelela i-asidi/i-alkali kanye ne-chlorine oxidation kungcono kunokwamanye ama-organophosphoric acid (usawoti). 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.

Isimo esiqinile se 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.

Ukucaciswa:

Izinto	Inkomba
Ukubukeka	Isixazululo esinamanzi esicacile, Esingenambala ukuya kokuphuzi	I-crystal powder emhlophe
Okuqukethwe okusebenzayo (HEDP), %	58-62	90.0 imiz
Active content (HEDP·H₂O), %	-	98.0 imiz
I-Phosphorous acid (njenge-PO₃^3-), %	2.0 ubuningi	0.8 ubuningi
Phosphoric acid (as PO₄^3-), %	0.8 ubuningi	0.5 ubuningi
I-Chloride (njengoCl^-)%	0.02 ubuningi	0.01 ubuningi
i-pH (1% isixazululo samanzi)	2.0 ubuningi	2.0 ubuningi
Ukuminyana (20℃), g/cm³	1.40 imiz	-
Fe, mg/L	20.0 ubuningi	10.0 ubuningi
Umbala we-APHA (Hazen)	40.0 ubuningi	-
I-Ca Sequestration (mg CaCO₃/g)	500.0 imiz

Ukusetshenziswa:

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.

Ukupakisha nokugcina:

HEDP liquid: 200L plastic drum,IBC(1000L),customers’ requirement.

HEDP solid: 25kg/bag,customers’ requirement.

Isitoreji izinyanga eziyishumi nambili ekamelweni elinomthunzi nendawo eyomile.

Ukuphepha nokuvikelwa:

I-HEDP ine-acidic. Naka ukuvikelwa kwabasebenzi ngesikhathi sokusebenza. Gwema ukuthintana namehlo nesikhumba. Uma isakazeka emzimbeni, hlambulula ngokushesha ngamanzi amaningi.