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Home > Products > EDTA Chelants & Phosphonate Sequestrants > HEDP CAS Number 2809-21-4

HEDP CAS Number 2809-21-4

HEDP CAS Number 2809-21-4

Payment Type: L/C,T/T,D/P
Incoterm: FOB,CFR,CIF
Min. Order: 5000 Kilogram
Delivery Time: 5 Days

Basic Info

    Model No.: CAS No 2809-21-4

Additional Info

    Packaging: in 250 Kgs PE drums

    Productivity: 30000MT/a

    Transportation: Ocean,Land

    Place of Origin: China

    Supply Ability: 30000MT/a

    Certificate: ISO9001

Product Description


1-Hydroxyethylidene-1,1-diphosphonic acid;

Etidronic Acid

CAS No. 2809-21-4

Molecular Weight: 206.02

EINECS No. 220-552-8

Molecular Formula: C2H8O7P2


HEDP is an organophosphonate with multifunctional properties of 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 has a wide range of applications as an excellent scale inhibitor and corrosion inhibitor.

HEDP is widely used in industrial water treatment, oil-field scale control, textile auxiliaries, sugar mill anti-scalants, thermal and geo-thermal anti-scalants, reverse osmosis anti-scalants, detergents, industrial and institutional cleaners, soaps and personal care products

HEDP is supplied in both liquid form and powder form. HEDP powder is soluble in cold water. HEDP powder is especially suited for using in cold areas or winter, where the temperature is under 0℃.


Active Content: 58.0 ~ 62.0%

Phosphorous acid(as PO3): ≤ 2.5%

Phosphoric acid(as PO4): ≤ 0.7%

pH(1% solution): ≤ 2

Density(20℃), g/cm3: 1.39 ~ 1.49

Chloride(as Cl): ≤ 200 ppm

Iron (as Fe): ≤ 25 ppm

Appearance: Clear colorless liquid.

Etidronic Acid CAS No 2809-21-4

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Product Categories : EDTA Chelants & Phosphonate Sequestrants

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