SAAPedia Home
logo

Sodium oleyl methyl isethionate

Time:2013-06-01 02:11:50; Reading: 17

Sodium oleyl methyl isethionate

Synonyms

9-Octadecenoic acid (9Z)-, methyl-2-sulfoester, sodium salt;

Category

Anionic Surfactant

> Sulfonate

>> Ester Sulfonate

>>> Fatty Acyl Hydroxyalkyl Sulfonate

>>>> Linear Alkenyl Fatty Acyl Hydroxyalkyl Sulfonate

Chemical Numbering System

CASRN:880353-25-3

EINECS:N/A

Molecular Formula & Molecular Weight

Molecular Formula: C21H39NaO5S; C21H40O5S.Na

Molecular Weight: 426.59

Structure

Properties

Appearance    (1), solid.

Solubility    soluble in water.

Stability    stable in weak acid, weak alkali. Easily oxidized. 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.10) label:  

Ecology    may be hazardous to environment. Water body should be given special attention.

Biodegradability    biodegradable.

Characteristics    excellent cleansing, foaming, emulsifying, dispersing, wetting, solubilizing abilities. Mild. Can be used in sulfate-free formula.

Note    (1), Can use in children products, such as shampoo, bath liquid and so on.

Synthesis

Hydroxy-methyl ethanesulfonic acid sodium salt reacts with oleic acid, then obtain.

For further information, see:

United States Patent 8,008,239 Acylalkylisethionate esters and applications in consumer products,

United States Patent 8,105,993 Process compositions and production of acyl alkylisethionate compositions,

United States Patent 8,580,723 Process compositions and production of acyl alkylisethionate compositions,

United States Patent 9,598,358 Acylalkylisethionate esters and applications in consumer products, and so on.

Quality Standards & Test Methods

1, Physical and chemical indexes

Item

Physical and chemical indexes

Solid

Actives, %, ≥

80.0 - 85.0

pH (25°C, 1%)

5.0 - 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.

(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 foaming agent.

Use as emulsifying agent, dispersing agent.

2, Personal care products

Use as cleansing agent, foaming agent.

Manufacturers

 

Update: 20131028(1); 20170814(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