Di-n-octyl sodium sulfosuccinate
Time: 2012-10-01 09:14:34
Di-n-octyl sodium sulfosuccinate
Synonyms
Sodium di-n-octyl sulfosuccinate;
Sulfobutanedioic acid, 1,4-di(n-octyl) ester, sodium salt;
Butanedioic acid, 2-sulfo-, 1,4-dioctyl ester, sodium salt (1:1);
Sodium dioctyl sulfosuccinate;
Category
Anionic Surfactant
>> Sulfonate
>> Ester Sulfonate
>> Sulfosuccinate(Ester) Salt
>> Sulfosuccinic Acid Linear Alkyl Alcohol Ester Salt
Chemical Numbering System
CASRN1639-66-3
EINECS216-684-0
Molecular Formula & Molecular Weight
Molecular Formula: C20H37NaO7S; C20H38O7S.Na
Molecular Weight: 444.56
Structure
Properties
Appearance    (1), solid; (2), liquid.
Solubility    soluble in water; soluble in ethanol.
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:  
Animal Toxicity
Table 1 Animal toxicity values
rat oral LD50
1900mg/kg[1]
mouse oral LD50
4800mg/kg[1]
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 octanol, obtain dioctyl maleate.
(2), Sulfonation reaction
Dioctyl 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
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
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 wetting agent, permeating agent.
Use as emulsifying agent, dispersing 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 cleansing agent, emulsifying agent.
5. Emulsion polymerization
Emulsifier, particle size controlling agent in emulsion polymerization.
6. Reagent
Use as reagent, for example: medicine.
Manufacturers
 
References
[1]: ChemIDplus. 1639-66-3, Di-n-octyl sodium sulfosuccinate
Update: 20131028(1); 20170823(2);