HEDP

2019-05-21

HEDP is an organic phosphonic acid scale and corrosion inhibitor. It forms stable complexes with various metal ions such as iron, copper and zinc and dissolves oxides on metal surfaces. It can still play a good role in corrosion inhibition and scale inhibition at 250 °C. It is stable at high pH and is not easily hydrolyzed. Decomposition under light and heat conditions is not easy. Acid and alkali resistance and chlorine oxidation resistance are superior to other organic phosphonic acids (salts). It forms a hexacyclic chelate with metal ions in water, especially calcium ions, so it has better scale inhibition effect and obvious dissolution effect. It exhibits the desired synergistic effect when used in combination with other water treatment agents. .
HEDP solids are high-purity products suitable for use in cold winter areas, especially in the electronics industry, as detergents and household chemical additives.
Hedp is widely used in industrial circulating cooling water systems, such as electricity, chemicals, metallurgy, fertilizers, and scaling and corrosion of medium and low pressure boilers, oil-injected water and oil pipelines; in the textile industry, it can be used as a cleaning agent for metals and non-metals. , a peroxide stabilizer and a fixer for the bleaching and dyeing industry, a compounding agent for the cyanide electroplating industry, and a radioactive element carrier for the pharmaceutical industry.
The concentration of HEDP as a scale inhibitor is 1×10 mg/L, the concentration of the corrosion inhibitor is 10×50 mg/L, and the concentration of the cleaning agent is 1000×2000 mg/L. When used in other industries, the dose should be determined experimentally.
The HEDP liquid is packaged in plastic drums of 30 Kg or 250 Kg per barrel. HEDP solids are packaged in plastic woven bags lined with polyethylene bags. The net weight of each bag is 25kg, which can also be determined according to user needs. Store in a cool, ventilated place indoors, protected from moisture and stored for ten months.
HEDP is acidic, pay attention to labor protection during operation, avoid contact with skin, eyes and so on. Immediately after contact, rinse with plenty of water.

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