Sodium/MEA laureth sulfosuccinate
Synonyms
Poly(oxy-1,2-ethanediyl), alpha-dodecyl-omega-3-carboxy-2-sulfo-1-oxopropyl-, 2-aminoethanol salts, sodium salts;
Succinic acid, sulfo-, laureth ester, 2-aminoethanol salts, sodium salts;
Category
Anionic Surfactant
> Sulfonate
>> Polyether Sulfonate(Salt)
>>> Sulfosuccinic Acid Polyether Ester(Salt)
>>>> Sulfosuccinic Acid Linear Alkanol Polyoxyethylene Ether Ester(Salt)
Chemical Numbering System
CAS: N/A
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: (C2H4O)n.C16H30O7S.xC2H7N1O1.xNa
Molecular Weight: N/A
Structure
Properties
Appearance (1), liquid; (2), solid.
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 emulsifying, dispersing, cleansing, wetting, solubilizing, foaming, permeating abilities. Good lime soap dispersing power. Suitable for neutral formula system.
Note (1), Do not use in children products, such as: shampoos, skin care products.
(2), Avoid using in personal care products.
(3), Do not use in nitrosating environment. Reaction of ethanolamine and nitrous acid can not produce nitrosamines, however, reaction of contained secondary amine of ethanolamine and nitrous acid can produce nitrosamines. Nitrosamine is a carcinogen.
Synthesis
(1), Esterification reaction
Maleic anhydride reacts with laureth, obtain laureth maleate.
(2), Sulfonation reaction
Laureth maleate reacts with sodium bisulfite, 2-aminoethanol, then obtain this product.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Liquid |
|
|
Actives, %, ≥ |
30.0 |
|
pH (25°C, 1%) |
4.5 - 7.5 |
Test Methods
(1), Actives
(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 |
|
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.
(b), Used in cosmetics, should be test for harmful substances; or furtherly test for microorganisms.
Major Uses
1, Typical Applications
Use as wetting agent, permeating agent.
Use as emulsifying agent, dispersing agent.
Use as hydrotrope.
2, Textile, leather
Use as wetting agent, permeating agent, emulsifying agent.
3, Personal care products
Cleansing agent, emulsifying agent, hydrotrope, foam stabilizing agent in personal care products.
* * * * * *
Further information:
(1), In accordance with EU regulations (EC) No 1223/2009, directive 2003/83/EC, ethanolamine and its salts are included in Annex III/61.
Maximum concentration of secondary amine is 0.5% in products.
In raw materials, maximum secondary amine content is 0.5%.
Maximum nitrosamine content is 50μg/kg.
The container is nitrite-free.
4, Household detergents
Use as wetting agent, emulsifying agent.
5, Industrial cleaning agents
Use as wetting agent, emulsifying agent, hydrotrope.
Product members
Sodium/MEA laureth-2 sulfosuccinate;
Manufacturers
Update: 20131029(1); 20170921(2);