Cooling Water cas 2809-21-4 C2H8O7P2 HEDPA Biocide Chemical

Basic Information
Place of Origin: China
Brand Name: YXCHEM
Certification: ISO9001
Model Number: HEDP acid 98%
Minimum Order Quantity: 1MTS
Price: Negotiable
Packaging Details: 290kg/Drum
Delivery Time: 30-45 days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 2000MTS per month
Detail Information
Molecular Structure: C2H8O7P2 Synonyms: HEDP; HEDPA
Hazard Class: 8 HS Code: 2942000000
Name: 1-Hydroxyethylidene-1,1-diphosphonic Acid HEDPA
High Light:

swimming pool algaecide


water treatment biocide

Product Description

Metal and non-metal cleaning agents cas 2809-21-4 1-Hydroxyethylidene-1,1-diphosphonic acid HEDPA
Product Name: 1-Hydroxyethylidene-1,1-diphosphonic acid
Synonyms: HEDP; HEDPA
CAS NO: 2809-21-4
Molecular Structure: C2H8O7P2
Hazard Class:8
Min Order Qty: 1MTS


Commodities Name

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP)

AppearanceClear, Colorless to a pale yellow aqueous solutionWhite crystal powder
Active content (HEDP)%60.0 min90.0 min
Active content (HEDP·H2O) %-98.0 min
Phosphorous acid (as PO33-) %2.0 max0.8 max
Phosphoric acid (as PO43- )%0.8 max0.5 max
Chloride (as Cl-) %0.02 max0.01 max
pH (1% water solution)2.0 max2.0 max
Density (20℃)g/cm31.40 min-
Fe, mg/L20.0 max10.0 max
Ca sequestration (mg CaCO3/g)500.0 min 

Cooling Water cas 2809-21-4 C2H8O7P2 HEDPA Biocide Chemical 0
Cooling Water cas 2809-21-4 C2H8O7P2 HEDPA Biocide Chemical 1
Product description
HEDP is an organic phosphoric acid corrosion inhibitor. It can chelate with iron, copper and zinc ions to form stable chelating compounds. It can dissolve oxidized substances on these metal surfaces. HEDP exhibits excellent scale and corrosion inhibition at a temperature of 250 ° C. HEDP has good chemical stability at high pH and is not easily hydrolyzed or decomposed under normal light and heating conditions. Its acid / alkali and chlorine oxidation resistance is better than other organic phosphoric acids (salts). HEDP can react with metal ions in water systems to form six-membered chelate complexes, especially calcium ions. Therefore, HEDP has good anti-scaling and visible threshold effects. When used with other water treatment chemicals, it has a good synergy.
The solid state of HEDP is crystalline powder, suitable for use in winter and frozen areas. Due to its high purity, it can be used as a cleaning agent in the electronics field and an additive for daily chemicals.
Cooling Water cas 2809-21-4 C2H8O7P2 HEDPA Biocide Chemical 2


1. It can be used in cooling water systems, pipelines, and boiler scale, it can
be as high hardness, high salinity, and another water quality is poor oil pipeline
2. It can be used for cooling water, boiler water, oilfield water treatment scale
inhibitor and corrosion inhibitor.
3. It can be used for circulating cooling thermal power plants, refineries.
Cooling Water cas 2809-21-4 C2H8O7P2 HEDPA Biocide Chemical 3


1. What are your payment terms?
T/T, D/P, L/C, D/A, O/A, Paypal, Alipay, and Western Union
2. What's your delivery time?
Usually, shipment will be made within 7-15 days against confirmed order.
3. How about the validity of the offer?
Usually, our offer is valid for 1 week. However, validity might vary between different products.
4. What documents do you provide?
Usually, we provide a Commerical Invoice, Packing List, Bill of loading, COA, Health certificate and Origin of the certificate. Please let us know if you need additional documents.
5. What is the loading port?
ShangHai, TianJin, HuangPu, Qingdao, etc.


Contact Details

Phone Number : +8613524790234