Pentasodium trihydrogen (ethane-1,2-diylbis(nitrilobis(methylene)))tetrakisphosphonate
Synonyms
Pentasodium ethylenediamine tetramethylene phosphonate;
Phosphonic acid, (1,2-ethanediylbis(nitrilobis(methylene)))tetrakis-, pentasodium salt;
Phosphonic acid, P,P',P'',P'''-(1,2-ethanediylbis(nitrilobis(methylene)))tetrakis-, sodium salt (1:5);
Category
Zwitterionic Surfactant
> Phosphonic Acid Type
Chemical Numbering System
CAS: 7651-99-2
EINECS: 231-615-4
Molecular Formula & Molecular Weight
Molecular Formula: C6H15N2Na5O12P4; C6H20N2O12P4.5Na
Molecular Weight: 546.03
Structure
Properties
Appearance (1), white solid.
Solubility soluble in water.
Stability stable.
Risk Solid form: corrosion; irritation, irritation to skin, eye, respiratory system.
GHS label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, anticorrosive, chelating abilities. The best chelating ability to copper ion.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid |
|
|
Heavy metals (as Pb), mg/kg, ≤ |
20 |
|
As, mg/kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents -- Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents -- Determination of total arsenic
3, Product standards
(1), Chinese standards
(1a), HG/T 4329 Water treatment chemical -- ethylene diamine tetra (methylene phosphonic) penta sodium salt
4, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances or furtherly test for microorganisms, according to local regulations and standards.
Major Uses
1, Typical applications
Use as chelating agent.
2, Water treatment
Use as corrosion inhibitor, antisludging agent.
3, Personal care products
Chelating agent, viscosity controlling agent in personal care products.
Manufacturers
Update: 20130821(1); 20190701(2);