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Zaozhuang Jialu Chemical Co., Ltd.

HEDP, 3794-83-0, Dequest 2016 manufacturer / supplier in China, offering Tetra Sodium Salt of 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid, 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

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

FOB Price: US $500-700 / Ton
Min. Order: 20 Tons
Min. Order FOB Price
20 Tons US $500-700/ Ton
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Port: Qingdao, China
Production Capacity: 600 Mt/Mon
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: HEDP Na4
  • Environmental Protection: Yes
  • Appearance: Liquid
  • Shipment: Within 7-10 Days
  • Transport Package: 250 Kgs/Drum
  • Origin: China
  • Acid-Base Property: Acidic Surface Disposal Agent
  • Color: White
  • Type: Industrial Circulating Water Treatment Agent
  • Trademark: JIALU
  • Specification: HEDP Na4
  • HS Code: 2931901990
Product Description
CAS No.  29329-71-3 (x-Na), 3794-83-0 (4-Na)   
Molecular Formula: C2H4O7P2Na                        Molecular weight: 294
Synonyms: Dequest 2016, 2016DG, Tetrasodium Etidronate
Structural Formula:

HEDPNa4 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.
HEDPNa4 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.
HEDPNa4 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.
HEDPNa4 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, HEDPNa4 is used as chelating agent. 
AppearanceWhite powderColorless to yellowish transparent liquid
Active content (HEDP) %56.0 min20.3-21.7
Active content (HEDPNa4) %79.9 min29.0-31.0
Total phosphoric acid (as PO43-) %52.0 min18.4-20.4
Fe, mg/L 35.0 max20.0 max
Moisture % 15 max--
Density (20ºC) g/cm3--1.26-1.36
pH 11.0-12.0 (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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