What is 1-hydroxy ethylidene-1,1-diphosphonic acid(HEDP)?
HEDP is an organic phosphoric acid scale and corrosion inhibitor, which can form stable complexes with iron, copper, zinc and other metal ions, and can dissolve oxides on the metal surface. HEDP can still play a good role in corrosion and scale inhibition at 250°C, and it is still very stable at high pH value, not easy to be hydrolyzed, and not easy to decompose under general light and heat conditions. Acid and alkali resistance and chlorine oxidation resistance are better than other organic phosphates (salts). HEDP can form six-ring chelates with metal ions in water, especially calcium ions, so HEDP has good scale inhibition effect and obvious solubility limit effect. When used in combination with other water treatment agents, it shows ideal synergy.
HEDP solid is a high-purity product, suitable for severe winter regions, especially for cleaning agents and daily chemical additives in the electronics industry.

The packaging and storage of 1-hydroxy ethylidene-1,1-diphosphonic acid(HEDP)?
HEDP liquid is packed in plastic barrels, 30Kg or 250Kg per barrel, and HEDP solids are packed in plastic woven bags lined with polyethylene bags, with a net weight of 25kg per bag, which can also be determined according to customers’ needs.
This product should be stored in a cool and ventilated place indoors, away from moisture, and the storage period is ten months.