Alias: sodium hydroxyethylidene diphosphonate

Molecular formula: c2h7o7p2na relative molecular weight: 228

1、 Performance and Application

HEDP · Na is an organic phosphonic acid scale and corrosion inhibitor, which can form stable complexes with iron, copper, zinc and other metal ions and dissolve oxides on the metal surface. It can still play a good role in corrosion and scale inhibition at 250 ℃, is still very stable at high pH, is not easy to hydrolyze, and is not easy to decompose under general photothermal conditions. Acid and alkali resistance and chlorine oxidation resistance are better than other organic phosphonic acids (salts). It can form six ring chelates with metal ions in water, especially calcium ions, so it has good scale inhibition effect and obvious solution limit effect. It shows ideal synergistic effect when combined with other water treatment agents.

HEDP ・ Na is the most suitable scale inhibitor and detergent with acidic formula. HEDP ・ Na is the single sodium salt of hydroxyethylidene diphosphonic acid, which is suitable for metal cleaning, metal treatment and metal ion control.

HEDP ・ Na is widely used in scale and corrosion inhibition of industrial circulating cooling water systems such as electric power, chemical industry, gold treatment and chemical fertilizer, medium and low pressure boilers, oilfield water injection and oil transmission pipelines; HEDP · Na can be used as metal and non-metal cleaning agent, peroxide stabilizer and color fixing agent in bleaching and dyeing industry, and complexing agent in cyanide free electroplating industry in light textile industry.

2、 Technical indicators

3、 Method of use

HEDP ・ Na is generally used as scale inhibitor with a concentration of 2-20mg / L, corrosion inhibitor with a concentration of 20-100mg / L and cleaning agent with a concentration of 1000-2000mg / L. it is usually used in combination with polycarboxylic acid scale inhibitor dispersant.

4、 Packaging and storage

HEDP ・ Na is packed in plastic drums, 25kg or 250kg per barrel, which can also be determined according to the needs of users. Store in a cool place indoors for 10 months.

5、 Safety protection

HEDP ・ Na is acidic. Pay attention to labor protection during operation. Avoid contact with skin and eyes. Rinse with plenty of water after contact.