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Current Position: Home > Product >Organic Raw Material >1-Hydroxyethylidene-1,1-diphosphonic acid CAS 2809-21-4
Product
1-Hydroxyethylidene-1,1-diphosphonic acid CAS 2809-21-4
  • Brand:hebei qujie
  • Model:170kg/Drum
  • Purity:99%
  • Cas:2809-21-4
  • Createtime: 2026-06-08
  • Updatetime: 2026-06-08
Product Details
useage Scale and corrosion inhibitor for water treatment and industrial cleaning
deliveryInfo
appearance Colorless to pale yellow liquid
aliasen
supplyCapacity 80T/Month
harbor tianjin qingdao shanghai
minorder 1KG

Product Description

Introduction:
HEDP is a new type of free electroplating complexing agent. It is used as the main agent for stable water quality in the circulating cooling water system, and plays the role of corrosion and scale inhibition. This product is one of the organic polyphosphonic acid-free water tablet conditioners. There are also some other varieties of such products produced in China, such as aminotrimethylenephosphonic acid (ATMP): [CH2PO(OH)2]3N and Diaminetetramethylenephosphoric acid (EDTMP) and so on. Organic polyphosphonic acid is a type of water treatment agent developed in the late 1960s and confirmed around the 1970s.

Application:
HEDP is noted for excellent CACO3 scale inhibition and stability. It is widely used in industry as a sequestering agent and calcium carbonate scale inhibitor for applications in cooling water treatment, boiler water treatment, industrial and institutional cleaners, swimming pool stain prevention, personal care products, metal ion control.

Recommended Uses: Cooling water treatment, Boiler treatment, I & I Cleaners, Metal Ion Control, Swimming pool, Personal care products.


Product Parameters


Appearance White crystal powder
Active content( as acid) % 90.0 Min.
Active content(HEDP·H2O) % 98.0 Min.
( as PO43-)% 0.5 Max.
(as PO33-) % 0.8 Max.
(as Cl-)% 0.01 Max.
PH( 1% water solution) 1.5-2.0
Fe PPM 5.0 Max.
 



FAQ

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Q2: Payment terms

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Q3: Delivery & lead time after payment

Small orders will be sent via international couriers (DHL, FedEx, TNT) or air freight. You will receive the goods within 3 to 5 working days after shipment.

For bulk orders, sea shipping is the most cost-effective choice. Transit time ranges from several days to weeks, depending on your destination port.

Q4: Custom packaging & labels

Yes, we support customized labels and packaging as per your requirements.

Q5: Quality assurance

All our products are fully qualified. We conduct strict testing and will provide the Certificate of Analysis (COA) prior to delivery.

 

After-sales Service

1. All products are manufactured and inspected in compliance with national standards. Defective goods are never delivered. We strictly abide by quality commitments and after-sales regulations.

2. If you have any quality complaints, we will respond within 24 hours. Should our products fail to meet quality standards, we offer a full refund.