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

Aigéad 1-Hiodrocsa-eitiléine-1,1-Déphosphonic(HEDP)

CAS Uimh. 2809-21-4

TEAGMHÁIL ANOIS PDF íoslódáil

Sonraí

Clibeanna

Réamhrá mionsonraithe Read More About 1 hydroxy ethylidene 1 1 diphosphonic acid hedp1

CAS No. 2809-21-4

Molecular Formula: C₂H₈O₇P₂ Meáchan móilíneach: 206.02

Foirmle Struchtúrtha:

Read More About corrosion scale inhibitor

Airíonna:

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 léiríonn scála den scoth agus éifeachtaí cosc creimeadh faoi theocht 250 ℃. HEDP tá cobhsaíocht mhaith ceimiceach aige faoi luach pH ard, deacair a hidrealú, agus deacair a dhianscaoileadh faoi ghnáthchoinníollacha solais agus teasa. Tá a lamháltas ocsaídiúcháin aigéid/alcaile agus clóirín níos fearr ná mar atá ag aigéid orgánafosfaracha eile (salann). 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.

Staid soladach na 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.

Sonraíocht:

Míreanna	Innéacs
Dealramh	Tuaslagán uiscí soiléir, Gan dath go pale buí	Púdar criostail bán
Ábhar gníomhach (HEDP), %	58-62	90.0 nóim
Active content (HEDP·H₂Ó), %	-	98.0 nóim
Aigéad fosfarach (mar PO₃^3-), %	2.0 max	0.8 max
Phosphoric acid (as PO₄^3-), %	0.8 max	0.5 max
Clóiríd (mar Cl^-)%	0.02 uas	0.01 max
pH (tuaslagán uisce 1%)	2.0 max	2.0 max
Dlús (20 ℃), g/cm³	1.40 nóim	-
Fe, mg/L	20.0 max	10.0 max
Dath APHA (Hazen)	40.0 max	-
Leithlisiú Ca (mg CaCO₃/g)	500.0 nóim

Úsáid:

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.

Pacáistiú agus stóráil:

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

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

Stóráil ar feadh dhá mhí dhéag i seomra áit shady agus tirim.

Sábháilteacht agus cosaint:

Tá HEDP aigéadach. Tabhair aird ar chosaint saothair le linn oibriú. Seachain teagmháil leis na súile agus leis an gcraiceann. Má splashes sé ar an gcomhlacht, sruthlaigh láithreach le neart uisce.