Shandong, China
Business Type:
Trading Company
Business Range:
Main Products:
Management System Certification:
ISO 9001, ISO 14001
Terms of Payment:
OEM/ODM Service
Sample Available

HEDP. Na4, Water Treatment, Chemical manufacturer / supplier in China, offering Tetra Sodium Salt of 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid~Best Quality, Natural Rubber Concentrated High Ammonia Latex, Factory Directly Sell Carbon Black for Rubber and so on.

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Supplier Homepage Products 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

Get Latest Price
Min. Order / Reference FOB Price
20 Tons US $480-540/ Ton
Port: Qingdao, China
Transport Package: Plastic Drum, IBC, PP or PE Bag
Payment Terms: L/C, T/T, D/P, Western Union
Acid-Base Property: Alkaline Surface Disposal Agent
Certification: REACH, ISO, MSDS
Environmental Protection: Yes
Color: Colorless to Yellowish, White
Appearance: Powder, Liquid
Type: Industrial Circulating Water Treatment Agent

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Basic Info

Model NO.: HEDP. Na4
Delivery Deadline: Within 15days After Receive Your Prepaid
Shipment Terms: Fob.CIF, CFR
Price Validity: Within 15days After Receive Your Prepaid
Trademark: JIALU
Specification: 200L, 1000L, 25Kg/bag
Origin: China
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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