HEDP Usage
【1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) Usage】 boilers and heat exchangers scale inhibitor and corrosion inhibitor, non-cyanide plating complexing agent , soap chelating agents, metal and non-metallic cleaning agent.
[ EPA ] used as boiler water , recycled water, oil field injection water treatment scale inhibitor. Chang and poly hydroxy acids DISPERSOR complex . But also for non-cyanide plating complexing agent , dyeing industry, fixing agent, hydrogen peroxide stabilizers.
[ ] This product uses three non-cyanide plating Ingredients . Formulated into a non-cyanide copper plating solution , sodium iron on direct copper plating layer with good strength . Coating smooth , good color . Usually the amount of 60% content of 100 ~ 120 ml / L. Copper sulfate in an amount of 15 ~ 20 g / L. Also, before plating the plating immersed in 1% to 2 % solution of this product , making plating into active form , and then plating can enhance the effect.
[ Four] uses the goods for the new chlorine-free plating complexing agent , using cooling water system is doing water stable master agent from corrosion and scale effect. The product is no more than one organic phosphonate water foliation agent, the domestic production of such products as well as some of his radical species, such as amino trimethylene phosphonic acid (ATMP): [CH2PO (OH) 2] 3N and B diamine tetra methylene phosphonic acid (EDTMP) and the like. Multiple organic acid developed in the late 1960s was , after 70 years of being recognized a class of water treatment agent, occurrence of such water treatment agent foliation technology took a big step forward . Compared with the machine polyphosphates, no more acid organic chemical stability medicine aunt , not hydrolysis , resist high temperature and a small dose of both mitigate erosion and fouling performance characteristics. Is a kind of cathodic corrosion inhibitor , is a class of non- chemical equivalent inhibitors. And when other water treatment chemicals, it shows good synergistic effects. For many metal ions such as calcium, magnesium, copper , zinc and the like can chelate with excellent services and even inorganic salts of these metals , such as CaSO4, CaCO3, MgSiO3 , etc. to have a good activation , thus widely used in water treatment technology. The product is of low toxicity , LD50 for mice subcutaneously 486.4mg/kg.
[Use ] for five commonly used inhibitor concentration 1 ~ 10mg / L, as a general inhibitor concentration 10 ~ 50mg / L; generally used as cleaning agent concentration 1000 ~ 2000mg / L; usually associated with polycarboxylate type scale with the use of dispersants