HPMA is an acronym for Water Treatment Agents Hydrolyzed Polymaleic Anhydride, the main use of this product is:

HPMA is usually used together with organic phosphonate at dosage of 1-15ppm for circulating cool water system, oilfield fill water, crude oil dewatering and low-pressure boilers. HPMA has good scale inhibition (98%) and scale stripping properties. When used together with zinc salts, it can effectively inhibit carbon steel corrosion.

HPMA is also widely used in desalination plant of flash vaporization equipment, steam locomotive and petroleum pipeline. In addition, It can be used in combination with phosphonates to improve performance and reduce phosphonate levels and thus provide a superior alternative to acrylate-based polymers. It can also be used as dispersant and scale inhibitor in cooling water treatment, Reverse Osmosis systems and many other scale control applications.

1. Performance and Applications

DTPMP·Na7 (Diethylene Triamine Penta(methylene Phosphonic Acid) Heptasodium) is a multifunctional organic phosphonic acid salt with the following main applications:

Scale Inhibitor: E​ffectively prevents the formation of scale such as carbonates and sulfates in water, widely used in cooling water treatment, oil field scale inhibition, and geothermal water treatment.

Efficient Chelating Agent: Forms stable complexes with various metal ions, suitable for removing heavy metal ions from water, such as lead, cadmium, and chromium, to improve water quality.

BaSO₄ Scale Inhibitor: Particularly effective in preventing the formation of barium sulfate scale.

Stabilizer for Peroxide Bleaching: In the textile dyeing and printing industry, it is used as a chelating agent and pigment dispersant to enhance the dyeing effect and product quality.

Detergent Adjuvant: Enhances cleaning effectiveness and improves cleanliness.

Municipal and Industrial Cleaning Water: Improves water quality and prevents the accumulation of scale.

Fertilizer Industry: Used as a micronutrient carrier to improve fertilizer efficiency and utilization.

Other Fields: Also used in papermaking, electroplating, metal pickling, and cosmetics industries.

2. Technical Specifications
   Item Specification
   Appearance Reddish-brown liquid
   Active Component (as DTPMPA) 31.5-33.5%
   Active Component (as DTPMP·Na7) 40.0-42.5%
   Total Phosphorus Content (as PO₄³⁻) 25.9-27.9%
   Chloride (as Cl⁻) ≤5.0%
   Iron (as Fe²⁺) Content ≤20.0 mg/L
   pH Value (1% Aqueous Solution) 7.0-9.0
   Density (at 20℃) ≥1.25 g/cm³
   Storage Life Ten months

3. Packaging and Storage

   Packaging Method: DTPMP·Na7 is typically packaged in plastic drums, with each drum containing 25Kg or 250Kg. Custom packaging specifications can also be provided according to customer requirements.

   Storage Conditions: Should be stored in a cool, indoor location, avoiding direct sunlight and high-temperature environments.

4. Safety Precautions

   Operational Precautions: DTPMP·Na7 is neutral. Strict safety operating procedures should be followed during operation to avoid direct contact with skin, eyes, etc.

   Emergency Handling: In case of accidental contact, immediately rinse with plenty of water and seek medical attention as soon as possible.

5. Environmental Friendliness

DTPMP·Na7 is considered a non-toxic chemical and is suitable for use in various applications.
Conclusion

DTPMP·Na7 is a multifunctional water treatment chemical widely used in cooling water treatment, oil field scale inhibition, geothermal water treatment, detergent adjuvants, municipal and industrial cleaning water, etc. It has excellent scale inhibition, chelation, and corrosion resistance properties. Safety precautions should be taken during operation, and waste should be disposed of properly.

The auspicious dragon leaves the year, the snake welcomes the new year. As the year 2024 is gradually coming to an end, Shandong Carey Chemical Co., Ltd. ushered in the fourth year-end party. Looking back on the past year, the company has been steadily advancing in the industry with the unremitting efforts of all staff and the strong support of customers and partners in the midst of challenges and opportunities.

In 2024, under the leadership of General Manager Kan Xiaodong, Shandong Carey Chemical Co., Ltd, all the staff united as one and fought bravely, not only successfully completed the tasks and goals set at the beginning of the year, but also made remarkable achievements in many fields. And has won the 'Zaozhuang City Enterprise Federation issued by the Enterprise Credit Rating' honor, which is not only a high degree of recognition of the company's integrity management, but also for us to adhere to the credibility of the market, to win the reputation of the affirmation.

In terms of scientific research and innovation, we were successfully approved the title of 'Zaozhuang Key Laboratory', which marks the official recognition of our investment and strength in the field of scientific research. At the same time, it has also won a number of honors such as 'Shandong Province Enterprise Technology Innovation Project' 'Specialized and Specialized New', which further consolidates its leading position in the industry. In addition, the company has also successfully declared and been approved for the 'Zaozhuang Science and Technology Innovation Project' 'Xuecheng District Technological Innovation Record' and 'Shandong Province Digital Economy “Morning Star Factory “' 'Provincial Digital Workshop' and other titles, fully demonstrating the company's outstanding achievements in technological innovation and digital transformation.

In terms of industrial development, the company was evaluated as ''Zaozhuang City Industrial Top 100 Enterprises'', which is not only an affirmation of the company's strength, but also an incentive for future development. At the same time, it was also awarded the title of 'Leading Enterprise of New Materials' and 'Pilot Enterprise of Shandong Province for DCMM Conformity', which marks the company's continuous improvement in the field of new materials and digital management capability.

In the association, general manager Kan Xiaodong made a report on the development of the enterprise and delivered a speech, he firstly expressed his heartfelt thanks to all the staff who have worked hard for the development of the company in the past year, and expressed his sincere gratitude to the customers and partners who have been supporting and trusting us all the time. He said that Shandong Carey Chemical Co., Ltd. will continue to uphold the enterprise spirit of 'sincerity, pragmatism, efficiency and enterprise', actively respond to the national call to provide customers with better quality products and services, contribute to the development of the industry, and continue to explore and practice the 'new quality productivity ' development path to promote industrial transformation and upgrading.

The price of chemical HEDP is influenced by many factors, such as raw materials, supply, market competition, policies and regulations.
In addition different distances, different packaging, different manufacturers offer different prices.
But the most important influencing factor is raw materials, and the main raw material of HEDP is phosphorus trichloride, here we look at the price of phosphorus trichloride:

Overall the price of phosphorus trichloride is still a certain fluctuation, the recent fluctuations between 10-20%, if you want to know the latest price of HEDP can be directly with us, we as a larger manufacturer of water treatment chaicals, will provide the latest price!

TEL: +86-632-3671188
FAX: +86-632-3671189
E-mail: [email protected]
ADD: No.1, Fuqian South Road, Xuecheng Chemical Industrial Park, Xuecheng District, Zaozhuang City, Shandong Province, China

HEDP-Na4 (tetrasodium hydroxyethylidene diphosphonate) is the sodium salt of hydroxyethylidene diphosphonic acid (HEDP), with the chaical formula C₂H₄O₇P₂Na₄, and the molecular weight of 294.It is an excellent inhibitor of calcium carbonate scaling, and it is used in the following main areas:
HEDP-Na4 Main applications

Water treatment: HEDP-Na4 is widely used in low-pressure boiler water treatment and circulating water treatment, which can effectively prevent the precipitation and scaling of minerals in water.
Industrial cleaning: In industrial municipal cleaning water, HEDP-Na4 can be used as metal corrosion inhibitor to prevent corrosion of metal surfaces.
Swimming Pool Sterilization: It is also used in the sterilization treatment of swimming pools to ensure the safety of water quality.
Other industrial applications: HEDP-Na4 is used as scale and corrosion inhibitor in electric power, chaical industry, metallurgy, fertilizer, etc. It is suitable for industrial circulating cooling water, oil field water injection and oil pipeline.

HEDP-Na4 Performance Characteristics

Appearance: HEDP-Na4 is white powder, easily soluble in water, with good transportation and storage.
Chaical stability: it can maintain good corrosion and scale inhibition effect under high taperature (up to 250℃), and can form stable complexes with many metal ions (such as iron, copper, zinc) to dissolve the oxides on the metal surface.

Safety of HEDP-Na4

HEDP-Na4 is weakly alkaline, when using it, it should avoid contact with eyes and skin, and in case of contact, it should be rinsed with large amount of water immediately.
In summary, HEDP-Na4 is an efficient water treatment chaical, widely used in many industries, with good scale and corrosion inhibition properties.

hedp4na Manufacturer Contact Information

TEL:+86-632-3671188
FAX: +86-632-3671189
E-mail:[email protected]
ADD:Xuecheng Chemical Industrial Park,Zaozhuang City, Shandong Province, China