PEG Tridecyl ether carboxylic acid, sodium salt
Synonyms
Sodium trideceth carboxylate;
Polyethylene glycol tridecyl ether carboxylic acid, sodium salt;
Polyoxyethylene tridecyl ether carboxylic acid, sodium salt;
Polyethylene glycol carboxymethyl tridecyl ether sodium salt;
Tridecyl alcohol ethoxylate methylcarboxylate sodium salt;
Category
Anionic Surfactant
> Carboxylate
>> Polyether Carboxylate
>>> Alkyl Polyether Carboxylate
>>>> Linear Alkyl Polyoxyethylene Ether Carboxylate
Chemical Numbering System
CASRN:61757-59-3 / 68891-17-8
EINECS:N/A / N/A
Molecular Formula & Molecular Weight
Molecular Formula: (C2H4O)nC15H30O3.Na
Molecular Weight: N/A
Structure
Properties
Appearance (1), white paste; or soft solid; or solid; (2), colorless to pale yellow liquid or viscous liquid.
Solubility soluble in water.
Stability stable. Stable to acid, alkali, hard water.
Risk Liquid form: irritation, low irritation to skin, eye.
GHS (Rev.10) label:
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, emulsifying, dispersing, foaming, foam stabilizing, wetting, solubilizing abilities. Resistance to high concentrations of alkali. Resistance to oxidants. Resistance to high temperature. Good compatibility. Can be compounded with cationic surfactants without affecting each other. Mild surfactant. Can reduce irritation of other surfactants. Under acidic condition, do not affect cleansing, foaming effects. Performance varies with EO number.
Note (1), 1,4-dioxane generated during polyether preparation: probable carcinogen. However, can be acceptable when concentration of 1,4-dioxane is less than 30ppm or less.
(2), Can be used in children products.
Synthesis
(1), Chloroacetic acid process (Discontinuous process)
Obtained that PEG tridecyl ether react with chloroacetic acid, sodium hydroxide.
The residual amount of sodium chloroacetate should be controlled in this process.
(2), Direct oxidation process (Continuous process)
Under the action of catalyst, PEG tridecyl ether is directly oxidized and neutralized by sodium hydroxide, then obtained.
The advantage of this process is that the final product does not contain sodium chloroacetate and sodium chloride.
Quality Standards & Test Methods
1, Physical and chemical indexes
Item |
Physical and chemical indexes |
||
#1 |
#2 |
#3 |
|
Actives, %, ≥ |
90.0 |
80.0 |
25.0 |
Solid content, %, ≥ |
96.0 |
86.0 |
26.0 |
NaCl*, %, ≤ |
10.0 |
8.0 |
4.0 |
Sodium chloroacetate*, ppm, ≤ |
20 |
20 |
10 |
pH (25°C, 1% solution) |
7.0 - 9.0 |
7.0 - 9.0 |
6.0 - 9.0 |
*: Only applicable to products using chloroacetic acid process. |
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), Solid content
QB/T 2950 Alkylpolyethoxy Carboxylate
(3), NaCl
QB/T 2950 Alkylpolyethoxy Carboxylate
(4), Sodium chloroacetate
QB/T 2950 Alkylpolyethoxy Carboxylate
(5), 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 / liquid / paste |
|
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, according to local regulations and standards.
Major Uses
1, Typical applications
Use as cleansing agent.
Use as emulsifying agent, dispersing agent.
Use as solubilizing agent.
Use as foaming agent, foam stabilizing agent.
2, Personal care products
Cleansing agent, emulsifying agent, foaming agent in personal care products.
3, Household detergents
Cleansing agent in household cleaning products.
4, Machinery
Emulsifying agent, cleansing agent in water-based metalworking fluids.
5, Petroleum
Tertiary oil recovery agent, viscosity reductant in oil field.
6, Industrial cleaning
Cleansing agent in industrial cleaning. Good cleaning effect on heavy oil and wax dirt.
7, Textile, leather
Cleansing agent, degreasing agent in textile, leather.
8, Fire extinguishing agent
Use as foaming agent.
Product members
Sodium trideceth-3 carboxylate;
Sodium trideceth-4 carboxylate;
Sodium trideceth-3 carboxylate;
Sodium trideceth-7 carboxylate;
Sodium trideceth-8 carboxylate;
Sodium trideceth-12 carboxylate;
Sodium trideceth-15 carboxylate;
Sodium trideceth-19 carboxylate;
Manufacturers
Update: 20131111(1); 20181126(2);