Disodium sitostereth sulfosuccinate
Synonyms
Poly(oxy-1,2-ethanediyl), alpha-(stigmast-5-en-3-beta-yl)-omega-(3-carboxy-1-oxosulfopropyloxy)-, disodium salt;
Category
Anionic Surfactant
> Sulfonate
>> Polyether Sulfonate(Salt)
>>> Sulfosuccinic Acid Polyether Ester(Salt)
>>>> Phytosterols Polyoxyethylene Ether Sulfosuccinic Acid Ester(Salt)
Chemical Numbering System
CAS: 206659-83-8
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: (C2H4O)n.C33H54O7S.2Na
Molecular Weight: N/A
Structure
Properties
Appearance (1), solid; (2), liquid.
Solubility soluble in water.
Stability stable in weak acid, weak alkali, hard water. Under strong acid or strong alkali, easily hydrolyze.
Risk Solid form: flammable material; irritation, irritation to skin, eye. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent emulsifying, dispersing, wetting, solubilizing, foaming, permeating abilities. Good lime soap dispersing power. Suitable for neutral formula system.
Synthesis
(1), Esterification reaction
Maleic anhydride reacts with sitostereth, obtain sitostereth maleate.
(2), Sulfonation reaction
Sitostereth maleate reacts with sodium bisulfite, then obtain this product.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
90.0 |
|
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 |
|
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, 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 emulsifying agent, dispersing agent.
Use as wetting agent.
Use as solubilizing agent.
2, Personal care products
Emulsifying agent in personal care products.
Product members
Disodium sitostereth-14 sulfosuccinate;
Manufacturers
Update: 20131029(1); 20170926(2);