https://krwater.mystrikingly.com/blog/hedp-prices-in-china-2024-november 

https://www.krdiary.com/what-is-polymaleic-acid-used-for/

Short-term view of HEDP price fluctuations are not large, but the long-term relatively large, HEDP price is the biggest factor affecting the raw materials, raw material fluctuations will have a direct impact on the price of HEDP, the following we look at the recent price of HEDP

Boiler water treatment chaicals are substances used to treat and condition water in a boiler systa to prevent damage, corrosion, scaling, and fouling, as well as to improve the efficiency and longevity of the boiler. They help maintain the quality of water in the systa and ensure safe, reliable operation. Some common categories of boiler water treatment chaicals include:

HEDP (1-hydroxyethylidene-1,1-diphosphonic acid), as a commonly used water-soluble scale inhibitor, has the following characteristics:

1. chaical stability: HEDP has good chaical stability, even at high taperature conditions can raain stable, will not occur thermal degradation.

2. Scale inhibition efficiency: HEDP can effectively inhibit the deposition of calcium carbonate (CaCO3) and other scale. Experiments show that even at a very low concentration (such as 5 mg/L), HEDP can achieve a high inhibition rate.

3. pH effect: The thermal decomposition characteristics of HEDP are different under aerobic and anaerobic conditions, but pH has little effect on its thermal decomposition.

4. Influence of environmental conditions: taperature has a greater influence on the scale inhibition ability of HEDP, and the scale inhibition effect of HEDP is better when the concentration of calcium ions and bicarbonate ions is lower.

5. Long-term effectiveness: HEDP can provide long-term scale inhibition protection. In oilfield applications, HEDP can effectively protect oil wells and production equipment from CaCO3 deposition and has a long effective period.

6. Adsorption and desorption properties: The contact layer formed by HEDP on the rock surface resists elution, which makes its desorption process in the reservoir rock slow, thus prolonging the effective action time of the scale inhibitor.

7. Environmental friendliness: HEDP, as a green scale inhibitor, is renewable, ecologically acceptable, biodegradable and environmentally friendly.

8. Compatibility: In the petroleum industry, HEDP needs to be compatible with other chaical additives to enhance oil recovery and should not initiate corrosion or be affected by corrosion products, as well as being compatible with corrosion inhibitors.

These properties make HEDP an effective scale inhibitor for industrial water treatment, widely used in circulating cool water systas, desalination equipment, heat exchangers, and oil and gas production equipment.

PAA is a commonly used dispersant, in addition to being used as a scale inhibitor and dispersant in circulating cooling water systas such as power plants, chaical plants, fertiliser factories, oil refineries and air-conditioning systas, it is also widely used in papermaking and textile, printing and dyeing, ceramics, coatings, building materials and other industries.

PBTCA (o-phenyltricarboxylic acid) and EDTMPS (ethylenediamine tetramethylenephosphonic acid) are both commonly used scale inhibitors for scale inhibition and chelation in the field of water treatment.

PBTCA mainly has the following characteristics:

HEDP (Hydroxyethylidene Diphosphonate), as an effective water treatment agent, also has a wide range of applications in the printing and dyeing industry. Here are some points about the use of HEDP in the printing and dyeing industry:

As chelating agent

In the dyeing and printing process, HEDP can be used as a chelating agent to stabilise the water quality and prevent precipitation problems caused by the presence of calcium and magnesium ions in hard water. Through chelation, HEDP binds to these metal ions, thereby reducing their effect on the dye and maintaining the stability of the dye solution.

There are several key factors to consider when selecting ATMP (1-hydroxyethylidene diphosphonic acid) and HEDP (1-hydroxyethane-1,1-diphosphonic acid) as industrial circulating water treatment agents:

The following key factors need to be considered when using PAPEMP (Polyamino Polyether Methylene Phosphonic Acid) in water treatment, both in terms of concentration and compounding, in order to ensure that its efficacy is maximised and that it is safe and reliable:

HEDP is an organic compound with the molecular formula C2H8O7P2, molecular weight 206.03, white crystalline particles, soluble in water as a colourless to light yellow liquid. It is easily soluble in water, soluble in methanol and ethanol. It has a large dissociation constant in water and can generate stable complexes with metal ions. It can form stable adducts with compounds containing active oxygen to keep active oxygen stable. Low toxicity.