Pentasodium Salt of Ethylene Diamine Tetra (Methylene Phosphonic Acid)
NANJING FINECHEM HOLDING CO., LTD
Specifications
Item Index
Appearance Amber transparent liquid
Active content (as EDTMPA)% 24.0-26.0
Active content (as EDTMP•Na5)% 30.0-32.6
Chloride (Cl-) % 2.0 max
Density (20℃) g/cm3 1.25 min
Fe, mg/L 20.0 max
PH (1% water solution) 6.0~8.0
Packing & Storage
Packing 200L plastic drum, IBC(1000L),customers’ requirement.
Storage 20℃, 2 years.
Shipping Room temperature in China; may vary elsewhere
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General Information
Chemical & Physical Properties
Safety Information
Synthetic Route
Common Names Ethylenediamine tetra(methylenephosphonic acid) pentasodium salt |EDTMPA
Structure
CAS No. 7651-99-2 Boiling Point (℃) N/A
Molecular Weight 546.033 Melting Point (℃) N/A
Appearance Amber transparent liquid Vapor Specific Gravity N/A
HS Code 2931909090 Flash Point (℃) N/A
Solubility Solube in water Autoignition Temperature (℃) N/A
Safety Phrases N/A
RIDADR N/A
WGK Germany N/A
Packaging Group N/A
Hazard Class N/A
SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat. Use local exhaust or breathing protection. Fresh air, rest.
Skin Redness. Burning sensation. Itching. Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain. Wear safety goggles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion Abdominal pain. Nausea. Vomiting. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.
Ethylenediamine is reacted with formaldehyde to produce ethylene diamine tetra (methylene phosphonic acid) (EDTMP).

EDTMP is then neutralized with sodium hydroxide to produce the sodium salt of EDTMP.

The sodium salt of EDTMP is further reacted with sodium carbonate to produce the Pentasodium Salt of Ethylene Diamine Tetra (Methylene Phosphonic Acid) (EDTMP•Na5).
Frequently Asked Questions
What is EDTMP Na5?
EDTMP·Na5 is a neutral product, a nitrogen-containing organic polyphosphonate, and is a cathodic corrosion inhibitor. It is miscible with water, non-toxic and non-polluting, has good chemical stability and temperature resistance, and it still has good scale inhibition effect at 200 °C. It can be dissociated into 8 positive and negative ions in aqueous solution, so it can chelate with multiple metal ions to form multiple monomeric structure macromolecular network complexes, which are loosely dispersed in water and destroy the normal crystallization of calcium scale. EDTMP sodium salt has good scale inhibition effect on calcium sulfate and barium sulfate scale.

What is EDTMP Na5 used for?
EDTMP·Na5 is used as corrosion and scale inhibitor for circulating water and boiler water, complexing agent for cyanide-free electroplating, water softener for printing and dyeing industry, cooling water treatment for power plants, etc. The solid product of EDTMP·Na5 has slight hygroscopicity, which is convenient for transportation and use under cold conditions.
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