Branched Dodecylbenzene Sulfonate Calcium Salt
Time: 2012-09-28 16:26:12

Branched Dodecylbenzene Sulfonate Calcium Salt

Synonyms

Benzenesulfonic acid, branched dodecyl-, calcium salt (2:1);

Branched dodecylbenzenesulfonic acid, calcium salt;

Category

Anionic Surfactant

> Sulfonate

>> Aryl Sulfonate

>>> Phenyl Sulfonate

>>>> Branched Alkylphenyl Sulfonate

Chemical Numbering System

CASRNN/A

EINECSN/A

Molecular Formula & Molecular Weight

Molecular Formula: C36H58CaO6S2; C36H60O6S2.Ca

Molecular Weight: 691.05

Structure

R: C12-branched.

Properties

Appearance    (1), transparent or slightly hazy amber liquid; (2), solid.

Solubility    insoluble in water or slightly soluble in water; soluble in kerosene, xylene; dispersible or soluble in methanol.

Stability    stable.

Risk    Solid form: flammable material; irritation, moderate irritation to skin, eye, respiratory. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.

GHS (Rev.7) label:  

Liquid 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    hardly biodegradable.

Characteristics    excellent emulsifying, dispersing, lubricating, adsorbing abilities.

Note    (1), Hardly biodegradable. Avoid to use if possible.

Synthesis

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

Generally, branched dodecylbenzene and sulfur trioxide react through reactor, then calcium 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

Liquid

Actives, %, ≥

60.0 - 70.0

pH (25°C, 5%, 50% isopropanol solution)

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

Liquid

Solid

Heavy metals (as Pb), mg/Kg, ≤

20

20

As, mg/Kg, ≤

3

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.

2, Pesticide

Use as emulsifying agent.

Manufacturers

 

Update: 20131025(1); 20170324(2);