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Home > Products >  90% HEDP 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

90% HEDP 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid CAS NO.2809-21-4

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  • FOB Price: USD 1750 /Metric Ton Get Latest Price
  • Min.Order: 20 Metric Ton
  • Payment Terms: L/C,T/T,Western Union,MoneyGram
  • Available Specifications:

    GB(1-22)Metric Ton

  • Product Details


  • HEDP powder
  • HEDP 90%min
  • HEDP

Quick Details

  • ProName: 90% HEDP 1-Hydroxy Ethylidene-1,1-Diph...
  • CasNo: 2809-21-4
  • Molecular Formula: C2H8O7P2
  • Appearance: White crystal powder
  • Application: HEDP is used as scale and corrosion in...
  • DeliveryTime: Shipped in 7 days after payment
  • PackAge: 25kg/bag,palletized,shrink wrapped.
  • Port: Shanghai,China
  • ProductionCapacity: 100000 Metric Ton/Year
  • Purity: 90% min
  • Storage: At dry and ventilated places, preventi...
  • Transportation: The sea freight or air cargo according...
  • LimitNum: 20 Metric Ton
  • Impurities: 0.02ppm


the hedp is 90%min powder.
twin chemical co.,ltd. is a modern enterprise for production,sale,export and trade of chemicals.
why twin
. top 10 chemical enterprises in china 
. over 12 years of experience 
. wholly owned production plant (48500 square meters)
. sales to more than 76 countries 
. high quality hedp with competitive prices
. strong r&d and private label/contract manufacturing
for saving cost and convenient delivery:
non-returnable containers (if need,especially for ruassia clients):
999usd/used container,but it is enough good to deliver goods safe till destination place.
1950usd/new container



1-Hydroxy Ethylidene-1,1-Diphosphonic Acid as scale and corrosion inhibition HEDP

CAS No. 2809-21-4

Molecular Formula:  C2H8O7P2                    Molecular weight: 206.02

HS NO: 2931900090

UN NO. 3265


HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals. 





White crystal powder

Active content (HEDP)%


Phosphorous acid (as PO33-)%

0.8 max

Phosphoric acid  (asPO43- )%

0.5 max

Chloride (as Cl-) ppm


pH (1% solution)

2.0 max


5.0 max


HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven 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. Usually, HEDP is used together with polycarboxylic acid.


 25kg/bag, and can make adjust according to customers’ requirement.

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