2809-21-4 CAS 1-Hydroxyethylidene-1 1-diphosphonic acid


Basic Info

Product Name:

1-Hydroxyethylidene-1 1-diphosphonic acid

Other Names:

Hydroxyethylidene diphosphonic acid; HEDP



Place of Origin:

Shandong, China

Brand Name:

Zhishang Chemical


Organic blocks; Water treatment agent; Intermediate; Small molecule inhibitors; Pharmaceutical raw materials


White powder




Cool Dry Place



Chemical Properties:

light beige powder


  1. Etidronate (Didronel) is a human protein tyrosine phosphatase inhibitor with IC50 of 0.2 μM.
  2. 1-Hydroxyethylidene-1 1-Diphosphonic acid is the main material for cyanide free electroplating. The cyanide free copper plating solution is prepared, and the copper layer is directly plated on sodium iron with good adhesion. The coating is smooth and has good color. The general dosage is 60%, and the content is 100 ~ 120ml / L. The dosage of copper sulfate is 15 ~ 20g / L. In addition, before electroplating, immerse the plated parts in 1% ~ 2% solution of the product to turn the plated parts into activated state, and then electroplating can improve the effect.
  3. 1-Hydroxyethylidene-1 1-Diphosphonic acid is often used as scale and corrosion inhibitor in boiler water, circulating water and oilfield water injection treatment. 1-Hydroxyethylidene-1 1-Diphosphonic acid is often compounded with polyhydroxy acid scale inhibitor dispersant. 1-Hydroxyethylidene-1 1-Diphosphonic acid can also be used as cyanide free electroplating complexing agent, color fixing agent in bleaching and dyeing industry and hydrogen peroxide stabilizer.
  4. 1-Hydroxyethylidene-1 1-Diphosphonic acid is generally used as scale inhibitor with a concentration of 1 ~ 10mg / L and corrosion inhibitor with a concentration of 10 ~ 50mg / L; As a cleaning agent, the general use concentration is 1000 ~ 2000mg / L; 1-Hydroxyethylidene-1 1-Diphosphonic acid is usually used in combination with polycarboxylic acid scale inhibitor dispersant

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Additive , Chemical Auxiliary & Catalyst , Organic Chemicals
  • Products/Service: Organic Intermediate,Inorganic Chemistry, APIs, Dyestuffs And Pigments, Fragrance And Spices, Food Additives
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.


After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

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Send your inquiry to us. Please feel free to contact us if you have any questions.