Sodium Lauryl Sulfoacetate
Time: 2012-09-28 16:42:15

Sodium Lauryl Sulfoacetate

Synonyms

Dodecyl sodium sulfoacetate;

2-Sulfoacetic acid dodecyl ester sodium salt;

Sodium 2-(dodecyloxy)-2-oxoethane-1-sulphonate;

Category

Anionic Surfactant

> Sulfonate

>> Ester Sulfonate

>>> Sulfomonobasic Fatty Acid Ester Salt

>>>> Sulfomonobasic Linear Alkyl Fatty Acid Linear Alkanol Ester Salt

Chemical Numbering System

CASRN1847-58-1

EINECS217-431-7

Molecular Formula & Molecular Weight

Molecular Formula: C14H27NaO5S; C14H28O5S.Na

Molecular Weight: 330.42

Structure

Properties

Appearance    (1), white powder or flake solid.

Solubility    soluble in water.

Stability    stable in weak acid, weak alkali, hard water. 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.7) label:  

Animal Toxicity

Table 1 Animal toxicity values

rat oral LD50

700mg/kg[1]

rat intraperitoneal LD50

980mg/kg[1]

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

Biodegradability    biodegradable.

Characteristics    excellent cleansing, foaming, emulsifying, dispersing, wetting, solubilizing, permeating abilities. Mild. Good lime soap dispersing power. Suitable for neutral formula system.

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

Synthesis

Sulfoacetic acid reacts with lauryl alcohol, then obtain.

Quality Standards & Test Methods

1, Physical and chemical indexes

Item

Physical and chemical indexes

Solid

Actives, %, ≥

65.0

Insoluble materials in ethanol, %, ≤

12.0

Sodium chloride, %, ≤

15.0

Moisture, %, ≤

1.5

pH (25°C, 1%)

4.5 - 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), Insoluble materials in ethanol

 

(3), Sodium chloride

GB/T 15963 Sodium lauryl sulfate

ISO 894 Surface active agents -- Technical sodium primary alkylsulphates -- Methods of analysis

(4), Moisture

GB/T 13173 Surface active agents - Detergents - Testing methods

(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

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, Household detergents

Use as cleansing agent, foaming agent.

3, Personal care products

Use as cleansing agent, foaming agent.

Can be used instead of sodium stearate in soap.

Manufacturers

 

References

[1]: ChemIDplus. 1847-58-1, Sodium lauryl sulfoacetate

Update: 20131028(1); 20170919(2);