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Zaozhuang Jialu Chemical Co., Ltd.

HEDP. Na4, Water Treatment, Chemical manufacturer / supplier in China, offering Tetra Sodium Salt of 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid~Best Quality, Factory Directly Sell Carbon Black for Rubber, Amino Trimethylene Phosphonic Acid ATMP with SGS Certificate and so on.

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Supplier Homepage Product Organophosphoric Salts Tetra Sodium Salt of 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid~Best Quality

Tetra Sodium Salt of 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid~Best Quality

FOB Price: US $480-540 / Ton
Min. Order: 20 Tons
Min. Order FOB Price
20 Tons US $480-540/ Ton
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Port: Qingdao, China
Transport Package: Plastic Drum, IBC, PP or PE Bag
Payment Terms: L/C, T/T, D/P, Western Union

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Basic Info
  • Model NO.: HEDP. Na4
  • Certification: REACH, ISO, MSDS
  • Color: Colorless to Yellowish, White
  • Type: Industrial Circulating Water Treatment Agent
  • Shipment Terms: Fob.CIF, CFR
  • Trademark: JIALU
  • Origin: China
  • Acid-Base Property: Alkaline Surface Disposal Agent
  • Environmental Protection: Yes
  • Appearance: Powder, Liquid
  • Delivery Deadline: Within 15days After Receive Your Prepaid
  • Price Validity: Within 15days After Receive Your Prepaid
  • Specification: 200L, 1000L, 25Kg/bag
  • HS Code: 2931901990
Product Description

Tetra Sodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

CAS No. 29329-71-3 (x-Na), 3794-83-0 (4-Na)    
Molecular Formula:C2H4O7P2Na      Molecular weight: 294
Synonyms: Dequest 2016, 2016DG, Tetrasodium Etidronate


        HEDP•Na4 is the sodium salt of HEDP and is an good scale inhibitor for calcium carbonate. It can be used in low pressure boiler water system, circulating water system, industrial and municipal cleaning water system and swimming pool.
        HEDP•Na4 solid form is white powder, soluble in water, easily deliquescence, suitable for use in winter and freezing districts. It is a kind of organophorphonic acid scale and corrosion inhibitor, can form stable complex with Fe, Cu and Zn ions. It can dissolve the oxides on metal surface and has good scale and corrosion inhibition effect under 250ºC.
        HEDP•Na4 is widely used in circulating cool water system, medium and low pressure boiler, oil field water pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.
        HEDP•Na4 is used as detergent for metal and nonmetal In light woven industry while in dyeing industry, it is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP•Na4 is used as chelating agent.



AppearanceWhite powderColorless to yellowish transparent liquid
Active content (HEDP) %56.0 min20.3-21.7
Active content (HEDP•Na4) %79.9 min29.0-31.0
Total phosphoric acid (as PO43-) %52.0 min18.4-20.4
Fe, mg/L35.0 max20.0 max
Moisture %15 max--

Density (20ºC) g/cm3


pH11.0-12.0 (1% water solution)10.0-12.0 (as it)
Phosphorous Acid % 1.0 max
Color APHA 50.0 max

Package and Storage:
        Liquid: 200L plastic drum, IBC(1000L),customers' requirement.
Solid: 25kg/bag,customers' requirement.
        Storage for ten months in shady room and dry place.
Safety Protection:
        Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.

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