Ethylene Diamine Tetra (Methylene Phosphonic Acid) Pentasodium salt (EDTMP·Na5)

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CAS No.7651-99-2
Synonym: Sodium ethylenediamine tetramethylenephosphonate, Subethylenediamine tetramethyllic fork phosphonate                              
Molecular Formula: C6H15O12N2P4Na5                                            
Structural formula:

1. Performance and usage
EDTMP·Na5 is a neutral product, a nitrogen-containing organic polybasic phosphonate, and a cathodic corrosion inhibitor. It is miscible with water, non-toxic and non-polluting, has good chemical stability and temperature resistance, and still has good anti-scaling effect at 200°C. It can dissociate into 8 positive and negative ions in aqueous solution, so it can chelate with multiple metal ions to form multiple monomer structure macromolecular network complexes, which are loosely dispersed in water, destroying the normal crystallization of calcium scale. EDTMP sodium salt has good anti-scaling effect on calcium sulfate and barium sulfate scale.
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, power plant cooling water treatment, etc.
The solid product is slightly hygroscopic, is easy to transport and use in cold conditions.

2.Technical indicators

Items	Index
Appearance	Amber transparent liquid	White powder
Active content (EDTMP•Na5), %	30.0-32.5	≥ 81.4
Active content (EDTMPA), %	24.0-26.0	≥ 65.0
Chloride (Cl-), %	≤ 2.0	≤ 2.0
Density (20℃), g/cm3	≥ 1.25	--
Fe, mg/L	≤ 20	≤ 20
PH(1％ water solution)	6.0-8.0	6.0-8.0

3.Package and Storage:
Liquid: 25kg or 250kg plastic barrel;  
Powder: 20kg plastic bags lined with polyethylene bags
Packing also can be determined according to clients’ demand. 
Store in a cool and ventilated place indoors, storage period is 1 year.

4. Safety protection
This product is neutral. Pay attention to labor protection during operation. Avoid contact with skin, eyes, etc. After contact, rinse with plenty of water.

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