HEDP CAS 2809 21 4 комплексное вещество без цианида для гальванического покрытия

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Product name 
CAS NO.
MF
Melting point 
Density
HEDP
2809-21-4
C2H8O7P2
198~199℃
1.45 (60% aq.)
Full name 
EINECS 
MW
Boiling point 
PH 
1-Hydroxyethylidene-1,1-diphosphonic acid
220-552-8
206.03
578.8±60.0 °C(Predicted)
pH (1.7→100, 25℃) : 1.3~1.8


Application
HEDP is mainly used for industrial circulating cooling water, injection in oil field and boiler water treatment, when mixed with molybdate, silicate, zinc salt and copolymer, it can act as corrosion inhibition and scale inhibition. It can be used as metal ion chelator and metal cleaning agent in soap and detergents of daily chemical industry.
HEDP can be with hydroxyacetic acid, PAA, BTA ,molybdate, copolymer,Zinc salt mixed into organic alkaline water treatment agent and low phosphorus zinc-based water treatment agent, which can be used in the circulating cooling water system of different water quality.












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