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Chelates and Water Conditioning

1-Hydroxyethylidene-1,1-diphosphonic Acid (HEDP)

Also known as: Etidronic acid

Clear colourless liquid in a glass beaker
Representative appearance — not a photo of this lot
  • CAS2809-21-4
  • EC220-552-8
  • Physical formLiquid
  • OriginChina

HEDP (etidronic acid) solution used as a scale and corrosion inhibitor in water conditioning and boiler/cooling systems.

HEDP (1-hydroxyethylidene-1,1-diphosphonic acid) is an organic phosphonate chelating agent. It is used as a scale and corrosion inhibitor in cooling water and boiler systems, as a set retarder in cement production, as a chelating agent in electroplating and as a hardness remover in cleaning products.

Used in: Construction ChemicalsMetal Surface TreatmentWater and Wastewater Treatment

  • Safety data sheet (SDS)On request by email
  • Technical data sheet (TDS)On request by email
  • Certificate of analysis (CoA)On request by email

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Applications

cooling water/boiler scale and corrosion inhibitor · cement set retarder · chelating agent in electroplating · hardness remover in cleaning products

Storage

Store in a cool place · Keep in a tightly closed container

Packaging

Packed to your specification. Liquids and pastes are supplied in:

  • A blue 200-litre plastic drum
    Drums
  • IBC tote in a galvanised steel cage
    IBC totes
  • A white plastic jerrycan
    Jerrycans
  • Plain stainless steel road tanker
    Tankers

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1-Hydroxyethylidene-1,1-diphosphonic Acid (HEDP)

CAS 2809-21-4 · Liquid

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