HEDP(水处理)

WATER TREATMENT Function: HEDP is an organic phosphonic acid scale and corrosion inhibitor, with iron, copper, zinc and other metal ions to form a stable complex, can dissolve the metal surface oxides. Under 250 still play a good role in corrosion and scale inhibitors in high-pH, remained stable, not easily hydrolyzed, generally easy to decompose under the conditions of light and heat. Acid and alkali resistance, other than chlorine oxidation of organic phosphonic acid (salt) well. With water and metal ions, especially calcium ions to form chelate ring 6, thus a good scale inhibition effects and obvious dissolution with limited effect, when the compound used and other water treatment agents has shown good synergy .Especially suitable for the electronics industry and daily chemical cleaning agent additives. Typical Applications : HEDP is widely used in electric power, chemical industry, metallurgy, fertilizer and other industrial cooling water system and in the low-pressure boiler, oil field and pipeline water scale and corrosion inhibition; in the textile industry, can be used for cleaning metal and non-metallic agent, peroxide bleaching and dyeing industry, stabilizer and dye-fixing agent, non-cyanide electroplating industry complexing agent. The general use as scale inhibitor HEDP concentration of 1 10mg / L, as the concentration of corrosion inhibitor general use of 10-50mg / L; for general use cleaning agent concentration of 1000 2000mg / L; usually associated with polycarboxylic acid type dispersing agent with the scale. Package and Storage: plastic barrel, 30Kg or 250Kg, Stored in a cool indoor ventilation, moisture, storage period of ten months. 5, security protection HEDP acidic should be avoided with the eyes, skin contact, when splashed on the body, rinse immediately with plenty of water. ITEM INDEX RESULT Appearance Clear coloress to pale yellow aqueous solution Active Content (as HEDP) 58.0-62.0% Phosphorous acid (as PO33-) 2.0%max Phosphoric acid (as PO43-) 1.0%max PH(1% water solution) 2max Density (20)g/cm3 1.37min Iron 10.0ppm max Chlorides(as CL-) 100ppm max Color(APHA) 30max Ca sequestration mg CaCO3/g 450min Acetic acid 1.0%max