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

Azido 1-hidroxietilideno-1,1-difosfonikoa (HEDP)

2809-21-4 CAS zenbakia

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Sarrera zehatza Read More About 1 hydroxy ethylidene 1 1 diphosphonic acid hedp1

CAS No. 2809-21-4

Molecular Formula: C₂H₈O₇P₂ Pisu molekularra: 206,02

Egiturazko formula:

Read More About corrosion scale inhibitor

Propietateak:

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 Eskala eta korrosioaren inhibizio efektu bikainak erakusten ditu 250 ℃ tenperaturan. HEDP pH balio altuan egonkortasun kimiko ona du, zaila da hidrolizatzea eta deskonposatzea zaila da argi eta bero baldintza arruntetan. Bere azido/alkali eta kloroaren oxidaziorako tolerantzia hobea da beste azido organofosforiko batzuena baino (gatza). 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.

-ren egoera solidoa 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.

Zehaztapena:

Elementuak	Aurkibidea
Itxura	Garbia, kolorerik gabeko disoluzio urtsu hori zurbila	Kristal hauts zuria
Eduki aktiboa (HEDP), %	58-62	90,0 min
Active content (HEDP·H₂O), %	-	98,0 min
Azido fosforoa (PO₃^3-), %	2,0 gehienez	0,8 gehienez
Phosphoric acid (as PO₄^3-), %	0,8 gehienez	0,5 gehienez
Kloruroa (Cl^-)%	0,02 gehienez	0,01 gehienez
pH (% 1 ur-soluzioa)	2,0 gehienez	2,0 gehienez
Dentsitatea (20 ℃), g/cm³	1,40 min	-
Fe, mg/L	20,0 gehienez	10,0 gehienez
Kolorea APHA (Hazen)	40,0 gehienez	-
Ca bahiketa (mg CaCO₃/g)	500,0 min

Erabilera:

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.

Enbalatzea eta biltegiratzea:

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

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

Biltegiratzea hamabi hilabetez gela itzalean eta leku lehor batean.

Segurtasuna eta babesa:

HEDP azidoa da. Jarri arreta lan-babesari funtzionamenduan zehar. Saihestu begiekin eta azalarekin kontaktua. Gorputza zipriztintzen badu, garbitu berehala ur askorekin.