DEA-methyl myristate sulfonate
Synonyms
Tetradecanoic acid, 2-sulfo-, 1-methyl ester, compd. with 2,2'-iminobis(ethanol) (1:1);
Category
Anionic Surfactant
> Sulfonate
>> Ester Sulfonate
>>> Fatty Acid Methyl Ester Sulfonate
>>>> Linear Alkyl Fatty Acid Methyl Ester Sulfonate
Chemical Numbering System
CAS: 64131-36-8
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: C19H41NO7S; C15H30O5S.C4H11N1O2
Molecular Weight: 427.60
Structure
Properties
Appearance (1), liquid.
Solubility soluble in water.
Stability stable in weak acid, weak alkali, hard water. Under strong acid or strong alkali, easily hydrolyze.
Risk Liquid form: irritation, irritation to skin, eye.
GHS label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, foaming, emulsifying, dispersing, wetting, solubilizing, permeating abilities. Suitable for neutral formula system.
Ingredients description (1), 2-Sulfomyristic acid bis(diethanolamine) salt should be strictly controlled in order to avoid affecting product quality.
Note (1), Do not use in personal care products.
(2), Do not use in nitrosating environment. Reaction of diethanolamine and nitrous acid can produce nitrosamines. Nitrosamine is a carcinogen.
Synthesis
In film reactor (for example: falling film reactor), methyl myristate reacts with sulphur trioxide, then age, bleach, neutralize, finally obtain.
For further information, see:
United States Patent 5,587,500 Sulfonation of fatty acid esters,
United States Patent 5,475,134 Process for making sulfonated fatty acid alkyl ester surfactant,
United States Patent 5,429,773 Process to improve alkyl ester sulfonate surfactant compositions, and so on.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Liquid |
|
|
Actives, %, ≥ |
80.0 |
|
Soluble materials in petroleum ether, %, ≤ |
2.5 - 4.0 |
|
pH (25°C, 1%) |
4.5 - 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), Soluble materials in petroleum ether
GB/T 11989 Anionic surface active agents -- Determination of soluble matter content in light petroleum
ISO 894 Surface active agents -- Technical sodium primary alkylsulphates -- Methods of analysis
(3), 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 |
|
Liquid |
|
|
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.
Major Uses
1, Typical Applications
Use as cleansing agent.
Use as foaming agent.
Use as emulsifying agent, dispersing agent.
2, Industrial cleaning agents
Main ingredient or auxiliary ingredient for cleansing agent, foaming agent in metal cleaning products and other industrial cleaning products.
Manufacturers
Update: 20131028(1); 20170821(2);