Product Name

Hepta sodium salt of Diethylene Triamine Penta (Methylene Phosphonic Acid) CAS 7651-99-2

Basic Information

CAS No:7651-99-2
Molecular Formula:C6H15N2Na5O12P4
Molecular Weight:546.033
Remarks:Factory direct sales

Pentasodium Salt of Ethylene Diamine Tetra (Methylene Phosphonic Acid) Properties




White Powder



Melting point/℃198-199
density(Kg/m³)2000(rough estimate)
refractive index1.460
Flash point/℃560.6
storage temproom temperature

Pentasodium Salt of Ethylene Diamine Tetra (Methylene Phosphonic Acid) USES

EDTMP•Na5 is a neutral product. It is nitrogenous organic polyphosphonic acid, which is a part of cathodic corrosion inhibitor. EDTMP•Na5 can be dissolved in water. It is non-toxic and pollution-free to environment. It has good chemical stability and heat resistance. EDTMP•Na5 still has good scale inhibition effect under temperature 200℃. It can dissociate into 8 positive and negative ions. Thus it can chelate with multiple metal ions to form a plurality of monomeric structural of macromolecule reticular complex. The complex can be dissolved in water to destroy the normal crystallization of calcium scale. EDTMP•Na5 has better scale inhibition effects to calcium sulfate and barium sulfate.

EDTMP•Na5 can be used as scale and corrosion inhibitor for circulating water and boiler water system, chelating agent in non-cyanide electroplating, water-softening agent in dyeing industry, etc.

The solid of EDTMP•Na5 is slight moisture absorption. It is easy to transport and use in cold conditions.

Pentasodium Salt of Ethylene Diamine Tetra (Methylene Phosphonic Acid) Packaging

Packing: 25Kg,100Kg,200Kg,1000Kg/Drum

Pentasodium Salt of Ethylene Diamine Tetra (Methylene Phosphonic Acid) storage

  1. Store barreled products in a cool, ventilated warehouse; keep away from

fire and heat sources. The warehousing temperature does not exceed 30 ℃, and the relative

humidity does not exceed 80%. Keep the container sealed; products should be stored separately

from oxidants, reducing agents, etc., and should not be mixed; be equipped with fire-fighting

equipment of appropriate variety and quantity; the storage area should be equipped with

equipment for emergency treatment of leakage and suitable containment materials;

  1. Store in a special storage tank; keep away from fire and heat sources; there is fire-fighting foam

for a fire emergency, and the tank area is equipped with equipment for the emergency treatment of


  1. Shelf life: The shelf life of this product is 6 months.

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