1-Hydroxyethylidene-1,1-diphosphonic acid 2809-21-4

The physical and chemical properties

Density 1.45 (60% aq.)

The melting point of 198 ~ 199 ℃

The appearance and shape are still stable under high PH value, not easy to hydrolyze, and not affected by internal enzymes. Low toxicity and easy to excrete in vitro, can play a good role at 200 temperature, more than 250 decomposition, acid and alkali resistance. It can form stable complex with iron, copper, aluminum, zinc and other metal ions.

Product features

HEDP is a kind of organic phosphoric acid scale and corrosion inhibitor, which can form stable complex with iron, copper, zinc and other metal ions and dissolve oxides on the metal surface. HEDP under 250 ℃ can still play a role of good scale and corrosion inhibitor, is still under high pH value is very stable, not easy to hydrolysis, general is not easy to decompose under the condition of field. Acid and alkali resistance and chlorine oxidation resistance are better than other organic phosphoric acid (salt). HEDP can form a six-ring chelate with metal ions in water, especially calcium ions, so HEDP has good scale inhibition effect and obvious solubility limit effect. When combined with other water treatment agents, it shows an ideal synergistic effect.

HEDP solids are high purity products, suitable for cold areas in winter. It is especially suitable for cleaning agent and daily-use chemical additive in electronic industry.