Product Details


EDTMPS(Ethylene Diamine Tetra) (Methylene Phosphonic Acid) (Sodium Salt)

EDTMPS(Ethylene Diamine Tetra) (Methylene Phosphonic Acid) (Sodium Salt) is a colorless to light yellow transparent liquid with a weak ammonia-like odor. It is soluble in water and glycerin and slightly soluble in ethanol. It is mainly used for the production of detergents, synthetic resin curing agents, textile printing auxiliary agents, and paper industry wet strength agents. Our team of experts is here to help you find the perfect solution for your needs. Contact us today to learn more about our products and how we can help you improve your business. You won't be disappointed!

Product Description

CAS No.  1429-50-1

Molecular Formula:C6H12O12N2P4Na8

Molecular weight: 612.13

Structural Formula:



EDTMPS is a nitrogenous organic polyphosphoric acid and a potent cathodic corrosion inhibitor that can be dissolved in water, making it innocuous and non-polluting. This chemical has exceptional stability and tolerance to thermal conditions, displaying potent scale inhibition under temperatures of up to 200℃. Furthermore, EDTMPS can dissociate into 8 positive-negative ions, which it uses to chelate with multiple metal ions forming polymer reticulation complexes that disrupt the normal crystallization of calcium scale. Additionally, this acid has efficacy over calcium and barium sulfate, providing more efficient antiscalant effects than conventional inorganic polyphosphates.


AppearanceClear yellow to umber transparent liquid
Active component (EDTMPS)% 28.0min
Organic phosphonic acid (asPO43- )%10.0min
Phosphorous acid (as PO33-)%5.0max
Phosphoric acid (asPO43- )%1.0max
pH (1% water solution)9.5-10.5
Density (20℃) g/cm31.25min
Chloride (Cl-) % 3.0max


EDTMPS can be employed as a corrosion inhibitor in circulating cool water systems and boilers while operating with the recommended 2-10mg/L concentration alone. This organotransition metal chelate is an ideal chelating agent for non-cyanogen electroplating operations and has been tested as a water-softening additive in printing and dyeing operations. Moreover, EDTMPS is also compatible with HPMA, BTA, PAAS, and zinc salt when mixing by a predetermined ratio of 1:3 ETDMP: HPMA for more efficient low-pressure boiler performance.

Package and Storage:

200L plastic drum,IBC(1000L),customers’ requirement. Storage for ten months in a shady room and dry place.

Get the Complete Phosphonates solution.

Consult Us Now for Water Treatment Chemical Solutions

We’re Always Here To support

We’re Always Here To support

Contact Form 询盘表单
Scroll to Top
Contact Form 询盘表单