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Localité:
CHINA
Prix de commande minimale:
-
Commande minimale:
-
Packaging Detail:
200PLASTIC DRUM, IBC(1000L)
Delivery Time:
5 days
Supplying Ability:
50000 Ton per Year
Payment Type:
Other, PayPal, Money Gram, Western Union, D/P, D/A, L/C, T/T
Personne àcontacter Mr. BRUCE
ANSHAN RD, Qingdao, Shandong
HEDP (*-Hydroxy Ethylidene*1, *-Diphosphonic Acid)
CAS No. ********4
Similar to Dequest: ***0
HEDP is an organophosphoric acid corrosion inhibitor. HEDP can
chelate with Fe, Cu, and Zn ions to form stable chelating
compounds. HEDP can dissolve the oxidized materials on these metals
surfaces. HEDP shows excellent scale and corrosion inhibition
effects under temperature **0centigrade. HEDP has good chemical
stability under high pH value, hard to be hydrolyzed, and hard to
be decomposed under ordinary light and heat conditions. Its
acid/alkali and chlorine oxidation tolerance are better than that
of other organophosphoric acids (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.
The solid state of HEDP is crystal powder, suitable for usage in
winter and freezing districts. Because of its high purity, HEDP can
be used as cleaning agent in electronic fields and as additives in
daily chemicals.
Specification of HEDP:
Appearance of HEDP: Colorless or light yellow transparent liquid
White crystal powder
Active content of HEDP (HEDP): *8.***2.0percent *9.0 percent
min
Phosphorous acid of HEDP (as PO**-): 2.0 percent max 0.5 percent
max
Phosphoric acid of HEDP (as PO**-): 0.8 percent max 0.5percent
max
Chloride of HEDP (as Cl-): 0.*1 percent max 0.*1 percent max
pH of HEDP (1percent solution): 2 max 2 max
Density of HEDP (*0 centigrade): 1.*0 g/cm3 -
Fe ion of HEDP ppm: *0 max *0 max
Colour APHA (Hazen): *0 max -
Usage of HEDP:
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 ***0mg/L is preferred as scale
inhibitor, ****0mg/L as corrosion inhibitor, and ********0mg/L as
detergent. Usually, HEDP is used together with polycarboxylic
acid.
HEDP, HEDP. Na, HEDP. Na2, HEDP. Na4, HEDP. Kx, HEDP Liquid, HEDP
Power, HEDP Solid, HEDP-Na, HEDP-Na2, HEDP-Na4, HEDP-Kx.
