Sodium Oleate
Time: 2012-10-02 16:24:10
Sodium Oleate
Synonyms
Sodium (Z)-9-octadecenoate;
9-Octadecenoic acid, sodium salt, (Z)-;
Category
Anionic Surfactant
>> Carboxylate
>> Chain Carboxylate
>> Alkenyl Carboxylate
>> Linear Alkenyl Carboxylate
Chemical Numbering System
CASRN143-19-1
EINECS205-591-0
Molecular Formula & Molecular Weight
Molecular Formula: C18H33NaO2; C18H34O2.Na
Molecular Weight: 304.44
Structure
 
Properties
Appearance    (1), white to yellow powder; (2), paste.
Odor    odor of animal fats or vegetable oils.
Solubility    soluble in water. soluble in ethanol.
Stability    stable. Easily oxidized.
Risk    Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.7) label:  
Animal Toxicity
Table 1 Animal toxicity values
mouse intravenous LD50
152mg/kg[1]
rabbit intravenous LDLo
150mg/kg[1]
Human Toxicity
Table 2 Human toxicity values
women oral TDLo
0.2mL/kg[1]
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent cleansing, emulsifying, dispersing, solubilizing, lubricating, foaming abilities. Nonresistant to hard water. Typical ingredient in soap.
Synthesis
Oleic acid reacts with sodium hydroxide solution, then obtain.
Quality Standards & Test Methods
1. Physical and chemical indexes
Item
Physical and chemical indexes
Solid
Actives, %, ≥
95.0
Test Methods
(1), Actives
GB/T 13173 Surface active agents - Detergents - Testing methods
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. 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), Chinese Pharmacopoeia (2015 Edition) Sodium oleate
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 cleansing agent.
Use as emulsifying agent, dispersing agent.
Use as lubricant.
Use as foaming agent.
2. Household detergents
Use as cleansing agent. For example: tallow soap.
3. Personal care products
Cleansing agent, emulsifying agent, viscosity controlling agent in personal care products.
4. Machinery industry
Lubricant in metal processing, machinery.
Use as corrosion inhibitor, rust inhibitor. Such as aluminum, aluminum alloy, iron, copper and so on.
5. Pets
Use as cleansing agent, emulsifying agent.
6. Textile
Waterproofing agent in textile.
7. Industrial cleaning
Cleansing agent in industrial cleaning products.
8. Medicine
Pharmaceutical excipients. Use as foaming agent, stabilizing agent. (This section is for reference only, should be implemented according to local Pharmacopoeia.)
Manufacturers
 
References
[1]: ChemIDplus. 143-19-1, Sodium oleate
Update: 20131102(1); 20180112(2);