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Sodium stearic acid methyl ester ethoxylate sulfonate

Time:2012-09-29 16:53:24; Reading: 36

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);

Document

[Terminology] Dispersion system

[Terminology] Vesicle

Pandect of Ester surfactants (1): Definition

[Terminology] Van Der Waals force

[Terminology] Micellar aggregation number

Standard

Test methods of surfactants, catalog, Chinese national standards

Surfactants, catalog, Chinese national standards

Test methods of materials, catalog, Chinese national standards

Basic standards of materials, catalog, Chinese national standards

Test methods of textile auxiliaries, catalog, Chinese national standards