HEDP 60 manufacturer and supplier, Shandong IRO Water Treatment Co., Ltd is from China-based. IR-HEDP 60 is made from acetic anhydride, phosphorus acid and phosphorus Trichloride. The phosphorus trichloride is converted to phosphorus acid within the reaction vessel and then reacts with the acetic anhydride. The raw materials we used are all quality standards of the Industry.

Shandong IRO Water Treatment Co., Ltd is the member of AWT. offers a wide range of high-performance wastewater treatment chemicals. The range of water treatment chemical supply includes HEDP 60, DETPMP and ATMP.

CAS No. 2809 21 4

Molecular Formula: C2-H8-O7-P2

Molecular Weight: 206.03

HEDP60% Structural Formu

HEDP 60 liquid, IR-HEDP 60%

HEDP 60, Hydroxyethylidene Diphosphonic Acid 60%


HEDP 60% is an organic phosphonic acid with multifunctional properties. It provides control of calcium and other metal salts including iron and manganese by acting as a strong crystal modifying agent and threshold inhibitor. Like sequestration of hardness salts and heavy metals, deflocculation, threshold inhibition and hydrolytic stability as a single active ingredient. Because of the combination of these properties. HEDP 60 has a wide range of applications as a scale and corrosion inhibitor.

HEDP 60% is a sequestrant and excellent deposit control agent.

Based on its hydrolytic stability, superior anti-scaling and sequestering ability, HEDP acid 60% is known as a superior phosphonic acid chelating agent in the market. Owing to their anti-scaling and hydrolytic stability, These products are generally used in water treatment, soaps & detergents and sugar processing.

Item Index
Appearance Colorless to Pale Yellow Liquid
Active Content 60%
Acetic Acid Content ≤ 1%
Crystallization Point < 0°C
Chlorides (ppm) ≤ 100
Iron Content (ppm) ≤ 35
Phosphorous Acid (PO33-) ≤ 2.5%
pH of 1% Solution ≤ 2
Specific Gravity (30°C) 1.43-1.45
Sequestration Value (CaCO3 mg/g) ≥ 500
Solubility Soluble in Water, Phosphoric Acid, Ethylene Glycol, most Acids and Bases


  • Used in low-pressure boiler

  • Used in dye-fixing agent

  • Used in complexing agent

  • Used in industrial cooling water system

  • Used in radioactive agents

  • Used in the textile industry

  • Used as a strong chelating agent for metal ions

  • Used as metal and non-metallic cleaning agent

Packing& Storage


Different HEDP 60 State, Different Pack.


HEDP 60 liquid: 200L plastic drum,IBC(1000L).

All products can be packed as customers’ requirements.


Ten months in room shady and dry place.

Safety Protection

Attention!HEDP 60  is acidic. when operating it, you should pay attention to labour protection. You must keep HEDP 60 away from skin, eyes and so on. If that happens unfortunately, immediately to use a lot of fresh water to flush.

HEDP 60 (cas no.2809 21 4) Quotation.

Contact us immediately, you will receive the latest HEDP 60 price.

Except information mentioned above, you will also get the HEDP 60 SDS. You can see it on this page - SDS Download.
HEDP 60 (cas no.2809 21 4) Quotation.