water treatment chemical HEDP

Product Description

*-Hydroxy Ethylidene*1, *-Diphosphonic Acid (HEDP) CAS ********4 C2H8O7P2 molecular formula molecular weight: **6.*2 First, the product characteristics HEDP is an organic phosphonic acid corrosion inhibitor and scale, with iron, copper, zinc and other metal ions to form a stable complex, to dissolve the surface of metal oxide. In the next **0 C still play a good role in corrosion and scale inhibitors in high pH stability is still under difficult to hydrolysis, light and heat conditions in general difficult to break down. Acid, oxidation-resistant than other organic acid (salt) good. With metal ions in the water, in particular the formation of six calcium chelate ring, and thus be better and have the effect of scale soluble obvious effects are limited, and other water treatment agent using the compound has shown the desired synergy . HEDP solid belong to high-purity products, applies to the winter cold regions; particular, the electronics industry apply to the cleaner use of chemicals and additives day. Second, the quality indicators in line with HG / T ********9 Item Indicators HG/T ********9 Appearance Colorless or yellowish transparent liquid Solid white powder Active component (to include HEDP)% ≥ *0.0 *0.0 *9.0 Phosphite (PO**-to-total)% ≤ 2.0 2.0 0.*0 Phosphoric acid (PO**-to-total)% ≤ 0.8 0.8 0.*0 Chloride (Cl-to-total)% ≤ 1.0 1.0 0.*0 PH value (1% aqueous solution) ≤ 2 2 2.0 Density(*0C)g/cm3 ≥ 1.*4 1.*0 —— Iron (to include Fe3 +) content ppm ≤ *0 *0 5.0 Active components (to include HEDP • H2O)% ≥ —— *8.0 Third, the use HEDP is widely used in electric power, chemical industry, metallurgy, chemical fertilizer, such as industrial cooling water system and, low-pressure boilers, water and oil pipeline corrosion and scale inhibition.