Ejendomme:

HEDP er en organophosphorsyre-korrosionshæmmer. Det kan chelatere med Fe-, Cu- og Zn-ioner for at danne stabile chelaterende forbindelser. Det kan opløse de oxiderede materialer på disse metallers overflader. HEDP viser fremragende skala og korrosionshæmmende effekter under temperatur 250 ℃. HEDP har god kemisk stabilitet under høj pH-værdi, svær at blive hydrolyseret og svær at nedbryde under almindelige lys- og varmeforhold. Dens syre/alkali- og kloroxidationstolerance er bedre end andre organophosphorsyrer (salt). 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.

Den faste tilstand af 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.

Specifikation:

genstande	Indeks
Udseende	Klar, farveløs til bleggul vandig opløsning	Hvidt krystal pulver
Aktivt indhold (HEDP), %	58-62	90,0 min
Aktivt indhold (HEDP·H₂O), %	-	98,0 min
Fosforsyre (som PO₃^3-), %	2,0 maks	0,8 maks
Fosforsyre (som PO₄^3-), %	0,8 maks	0,5 maks
Chlorid (som Cl^-)%	0,02 maks	0,01 maks
pH (1% vandopløsning)	2,0 maks	2,0 maks
Massefylde (20℃), g/cm³	1.40 min	-
Fe, mg/L	20,0 maks	10,0 maks
Farve APHA (Hazen)	40,0 maks	-
Ca-sekvestrering (mg CaCO₃/g)	500,0 min

Anvendelse:

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.

Emballage og opbevaring:

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

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

Opbevaring i tolv måneder på et skyggefuldt og tørt sted.

Sikkerhed og beskyttelse:

HEDP er surt. Vær opmærksom på arbejdsbeskyttelse under drift. Undgå kontakt med øjne og hud. Hvis det sprøjter på kroppen, skylles straks med rigeligt vand.