Disodium stearyl sulfosuccinate
Time: 2013-05-30 01:33:43
Disodium stearyl sulfosuccinate
Synonyms
Disodium 1-octadecyl 2-sulphonatosuccinate;
Category
Anionic Surfactant
>> Sulfonate
>> Ester Sulfonate
>> Sulfosuccinate(Ester) Salt
>> Sulfosuccinic Acid Linear Alkyl Alcohol Ester Salt
Chemical Numbering System
CASRN65277-59-0
EINECS265-673-7
Molecular Formula & Molecular Weight
Molecular Formula: C22H40Na2O7S; C22H42O7S.2Na
Molecular Weight: 494.59
Structure
Properties
Appearance    (1), solid; (2), paste; (3), 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, 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.6) label:  
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent emulsifying, dispersing, wetting, cleansing, foaming, solubilizing, permeating abilities. Good lime soap dispersing power. Suitable for neutral formula system.
Synthesis
(1), Esterification reaction
Maleic anhydride reacts with stearyl alcohol, obtain stearyl maleate.
(2), Sulfonation reaction
Stearyl 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, %, ≥
80.0
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. Product standards
(1), Chinese standards
(1a), QB/T 4085 Disodium sulfosuccinate
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.
Major Uses
1. Typical Applications
Use as wetting agent, permeating agent.
Use as emulsifying agent, dispersing agent.
Use as cleansing agent.
2. Textile, leather
Use as wetting agent, permeating agent.
3. Household detergents
Use as cleansing agent, emulsifying agent.
4. Industrial cleaning agents
Use as wetting agent, emulsifying agent, cleansing agent.
5. Personal care products
Cleansing agent, foaming agent, foam stabilizing agent, hydrotrope in personal care products.
6. Emulsion polymerization
Emulsifier, particle size controlling agent in emulsion polymerization.
Manufacturers
 
Update: 20131028(1); 20170823(2);