Sodium stearic acid methyl ester ethoxylate sulfonate
Synonyms
Stearic acid methyl ester, ethoxylates, sulfonates, sodium salt;
Sodium stearic acid methyl ester ethoxylates sulfonates;
FMES;
Category
Anionic Surfactant
> Sulfonate
>> Polyether Sulfonate(Salt)
>>> Fatty Acid Methyl Ester Polyether Sulfonate(Salt)
>>>> Linear Alkyl Fatty Acid Methyl Ester Polyether Sulfonate(Salt)
Chemical Numbering System
CASRN:N/A
EINECS:N/A
Molecular Formula & Molecular Weight
Molecular Formula: (C2H4O)n.C19H38O5S.Na
Molecular Weight: N/A
Structure
Properties
Appearance (1), yellow viscous liquid; (2), solid.
Solubility soluble in water.
Stability stable.
Risk Liquid form: irritation, 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, wetting, solubilizing abilities. Good lime soap dispersing power. Relative to other surfactants: low foaming, low permeating. Resistance to high concentrations of inorganic electrolyte solution. Resistance to high concentrations of alkali solution. Good anti-fouling and redeposition properties. Excellent degreasing, wax removing abilities. Preferred raw materials of degreasing agent, wax removing agent.
Synthesis
Stearic acid methyl ester ethoxylate reacts with sulphur trioxide, then neutralizes by sodium hydroxide or sodium carbonate, finally obtain.
Quality Standards & Test Methods
1, Physical and chemical indexes
Item |
Physical and chemical indexes |
Liquid |
|
Actives, %, ≥ |
70.0 |
pH (25°C, 1%) |
5.0 - 8.0 |
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 |
Liquid |
|
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 cleansing agent.
Use as emulsifying agent, dispersing agent.
2, Textile
Widely use as cleansing agent. For example: alkali resistant refining agent.
3, Leather
Degreasing agent, fat-liquoring agent, emulsifying agent, cleansing agent in leather.
4, Household detergents
Use as cleansing agent, emulsifying agent. If need to get high foam effect, often need to use with the foam agents.
5, Industrial cleaning agents
Use as cleansing agent, emulsifying agent. Especially suitable for cleaning grease, wax.
6, Emulsion polymerization
Emulsifier, particle size controlling agent in emulsion polymerization.
Product members
Manufacturers
Update: 20131029(1); 20170921(2);