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

1-Hydroxy Ethylidene-1,1-Acide Diphosphonike (HEDP)

URUBANZA No 2809-21-4

SHAKA NONAHA PDF SHAKA

Ibisobanuro

Etiquetas

Intangiriro irambuye Read More About 1 hydroxy ethylidene 1 1 diphosphonic acid hedp1

CAS No. 2809-21-4

Molecular Formula: C₂H₈O₇P₂ Uburemere bwa molekuline: 206.02

Imiterere yuburyo:

Read More About corrosion scale inhibitor

Ibyiza:

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 yerekana urugero rwiza hamwe na ruswa yo kubuza munsi yubushyuhe 250 ℃. HEDP ifite imiti ihamye munsi ya pH ifite agaciro gakomeye, bigoye kuba hydrolyzed, kandi bigoye kubora mugihe cyumucyo nubushyuhe busanzwe. Acide / alkali hamwe na chlorine oxydeire yihanganira iruta iyindi acide organifosifike (umunyu). 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.

Imiterere ihamye ya 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.

Ibisobanuro:

Ibintu	Ironderero
Kugaragara	Birasobanutse, Ibara ritagira ibara ry'umuhondo wijimye	Ifu yera ya kirisiti
Ibirimo bifatika (HEDP),%	58-62	90.0 min
Active content (HEDP·H₂O),%	-	98.0 min
Acide ya fosifori (nka PO₃^3-), %	2.0 max	0.8 max
Phosphoric acid (as PO₄^3-), %	0.8 max	0.5 max
Chloride (nka Cl^-)%	0.02 max	0.01 max
pH (1% igisubizo cyamazi)	2.0 max	2.0 max
Ubucucike (20 ℃), g / cm³	1.40 min	-
Fe, mg / L.	20.0 max	10.0 max
Ibara APHA (Hazen)	40.0 max	-
Ikurikiranwa rya Ca (mg CaCO₃/ g)	500.0 min

Ikoreshwa:

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.