Tetra Sodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP·Na4)

CAS No. 29329-71-3 (x-Na), 3794-83-0 (4-Na)

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Fa'amatalaga

Fa'ailoga

Fa'atomuaga auiliili

Numera CAS 29329-71-3 (x-Na), 3794-83-0 (4-Na) Synonyms: Tetrasodium etidronate

Fuafuaga mole: C₂H₄O₇P₂Ua uma₄ Mole mole mamafa: 294

Fua Fa'atatau:

Meatotino:

HEDP•I₄ o le masima sodium o HEDP, HEDP•I₄ o se iniseti fua lelei mo le calcium carbonate, e mafai ona faʻaaogaina i le faʻaogaina o le vai faʻavevela maualalo, faʻafefe vai, fale gaosimea ma faʻalapotopotoga vai faʻamamaina ma vaitaʻele.

The solid HEDP•Na₄ o le pa'epa'e pa'epa'e, solu i le vai, faigofie deliquescence, talafeagai mo le fa'aoga i le taumalulu ma le malulu itumalo. O se ituaiga o fua o le organophorphonic acid ma le inhibitor corrosion, e mafai ona fausia faʻalavelave faʻatasi ma ion Fe, Cu ma Zn, e mafai ona faʻamavaeina le oxides i luga o uʻamea, o loʻo i ai le fua lelei ma le faʻaleagaina o le aʻafiaga i lalo ole 250 ℃.

HEDP•I₄ is widely used in circulating cool water system, medium and low pressure boiler, oil field water pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP•Na₄ is used as detergent for metal and nonmetal. In dyeing industry, HEDP•Na₄ is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP•Na₄ e faʻaaogaina e fai ma sui chelating.

Fa'amatalaga:

Aitema	Fa'asinomaga
Fa'aaliga	E leai se lanu i le samasama manino vai	Pa'epa'e pa'epa'e
Mea gaogao (HEDP)%	20.3-21.7	60.0 min
Mea gaogao (HEDP•Na₄)%	29.0-31.0	85.0 min
Ole aofa'i ole phosphoric acid (e pei ole PO₄^3-) %	18.4-20.4	55.0 min
Fe, mg/L	20.0 maualuga	35.0 maualuga
susu，%	--	10.0 maualuga
Malosi (20℃)g/cm³	1.26-1.36	--
PH (1% vaifofo)	10.0-12.0	11.0-12.0