Magnesium p-toluenesulphonate
Time: 2013-10-31 15:42:33

Magnesium p-toluenesulphonate

Synonyms

Magnesium di(toluene-4-sulphonate);

Benzenesulfonic acid, 4-methyl-, magnesium salt (2:1);

Benzenesulfonic acid, p-methyl-, magnesium salt;

Magnesium p-toluenesulfonate;

Category

Anionic Surfactant

> Sulfonate

>> Aryl Sulfonate

>>> Phenyl Sulfonate

>>>> Linear Alkylphenyl Sulfonate

Chemical Numbering System

CASRN51650-46-5

EINECS257-335-2

Molecular Formula & Molecular Weight

Molecular Formula: C14H14MgO6S2; C14H16O6S2.Mg

Molecular Weight: 366.69

Structure

Properties

Appearance    (1), solid.

Solubility    soluble in water.

Stability    stable.

Risk    Solid form: flammable material; irritation, moderate 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:  

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

Biodegradability    biodegradable.

Characteristics    excellent dispersing, emulsifying, lubricating abilities.

Synthesis

Currently, sulfonation reaction through continuous reactor (such as: falling film reactor) is the most widely used method for preparing sulfonates.

Generally, p-toluene and sulfur trioxide react through reactor, then magnesium oxide neutralizes, finally obtain product.

US patent 8,921,588 (Process for preparing sulfates and/or sulfonates in a micro-reaction system) presents a synthetic process. Conditions: mole ratio of sulfur trioxide and alkyl benzenes or other raw materials: 1:1; temperature: 30-60°C; reactor: falling film reactor.

Quality Standards & Test Methods

1, Physical and chemical indexes

Item

Physical and chemical indexes

Solid

Actives, %, ≥

90.0

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, 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.

Major Uses

1, Typical applications

Use as emulsifying agent, dispersing agent.

Use as lubricant.

Manufacturers

 

Update: 20170507(1);