Ammonium cocoyl isethionate
Synonyms
Fatty acids, coco, 2-sulfoethyl esters, ammonium salts;
Coconut fatty acid, 2-sulfoethyl ester, ammonium salt;
Category
Anionic Surfactant
> Sulfonate
>> Ester Sulfonate
>>> Fatty Acyl Hydroxyalkyl Sulfonate
>>>> Fatty Acid (Natural Substance Derivative) Acyl Hydroxyalkyl Sulfonate
Chemical Numbering System
CASRN：223705-57-5
EINECS：N/A
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
R: coco structure.
Properties
Appearance (1), white or beige paste; (2), white or beige powder or flaky solid.
Odor faint grease odor.
Solubility soluble in water.
Stability stable in weak acid, weak alkali, hard water. Under alkaline conditions, ammonia is released. Under strong acid or strong alkali, easily hydrolyze.
Risk Solid form: flammable material; irritation, low irritation to skin, eye. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.10) label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, foaming, emulsifying, dispersing, wetting, solubilizing abilities. Mild. Easily thickening. Can be used in sulfate-free formula. Suitable for weak acid formula system.
Note (1), Can use in children products, such as shampoo, bath liquid and so on.
Synthesis
Ammonium hydroxyethanesulfonate reacts with coconut acid, then obtain.
For further information, see:
United States Patent 8,008,239 Acylalkylisethionate esters and applications in consumer products,
United States Patent 8,105,993 Process compositions and production of acyl alkylisethionate compositions,
United States Patent 8,580,723 Process compositions and production of acyl alkylisethionate compositions,
United States Patent 9,598,358 Acylalkylisethionate esters and applications in consumer products, and so on.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
|
Solid |
Paste |
|
|
Actives, %, ≥ |
80.0 - 85.0 |
50.0 - 60.0 |
|
pH (25°C, 10%) |
4.0 - 7.0 |
4.0 - 7.0 |
Test Methods
(1), Actives
GB/T 5173 Surface active agents and detergents－Determination of anionic-active matter by direct two-phase titration procedure
ISO 2271 Surface active agents -- Detergents -- Determination of anionic-active matter by manual or mechanical direct two-phase titration procedure
(2), pH
GB/T 6368 Surface active agents - Determination of pH of aqueous solution - Potentiometric method
ISO 4316 Surface active agents -- Determination of pH of aqueous solutions -- Potentiometric method
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid/Paste |
|
|
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, 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.
Major Uses
1, Typical Applications
Use as cleansing agent.
Use as foaming agent.
Use as emulsifying agent, dispersing agent.
2, Personal care products
Use as cleansing agent, foaming agent.
Characteristics: mild, rich foam, smooth skin feeling after washing.
Manufacturers
Update: 20131028(1); 20170814(2);