HEDP 60% CAS 2809 21 4 Hydroxyethylidene diphosphonic acid for Boiler scale inhibitor

1.Properties
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn etc. metal ions and form stable complex compound. It can dissolve the oxidized materials on these metals’ surfaces. Under  250℃ HEDP shows excellent scale and corrosion inhibition ability. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects. 
The solid of HEDP is high purity product, suitable for using in winter and freezing districts. it is quite suitable for using as cleaning agent in electronic fields and as additives in daily chemicals.  
2.Specification:

3.HEDP Application range&using method
HEDP is widely used in the in circulating cool water system of electric power, chemical industry, metallurgy, fertilizer, etc. and widely used as a scale and corrosion inhibitor of low-pressure boilers, field waterflood, oil pipeline.
In light&textile industry,  HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid. 
4.Package and Storage:

HEDP liquid: 200L plastic drum,IBC(1000L),customers’ requirement.

HEDP solid: 25kg/bag,customers’ requirement.

Storage for ten months in room shady and dry place.

5.Safety Protection:
HEDP is Acidity, Avoid contact with eye and skin, once contacted, flush with water.

About the sample shippment

About the payment

1. Supply high quality products with a reasonable price, inform regular customers the market information.

2. Arrange the orders and shipping with customer requests in time, According to the different countries export policy provide complete customs clearance documents.

3. We can guarantee the quality during quality avail period.

4. Provide a market price and supply trend, ensure the clients can know about marketing information in time.

5. 24hours reply after got clients’ request.

1.Q:Can you manufacture the Customization product? 

 A:Please provide the specification of this product you request , after the evaluation , we will

    feedback to you .

2. Q: What documents you provide?  

A: Usually, we provide Commercial Invoice, Packing List, Bill of loading, COA ,Origin 

    certificate. If your markets have any special requirements, let us know

3. Q: What is loading port?

    A: Usually is Shanghai or Qingdao port.

4.Q:What is the payment terms?

  A: L/C ,T/T, (we have Kunlun bank and do the payment throgh Kunlun Bank)

5. Q:How can I get some samples? 

   A: Kindly send us your address, we are honored to offer you samples. 

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