Benzenesulfonic acid, 4-(1-ethyldecyl)-
Time: 2017-05-11 22:07:33

Benzenesulfonic acid, 4-(1-ethyldecyl)-

Synonyms

p-(3-Dodecyl)benzenesulphonic acid;

4-Dodecylbenzenesulfonic acid;

p-Dodecylbenzenesulphonic acid;

Category

Anionic Surfactant

> Sulfonate

>> Aryl Sulfonate

>>> Phenyl Sulfonate

>>>> Linear Alkylphenyl Sulfonate

Chemical Numbering System

CASRN18777-54-3

EINECS242-564-2

Molecular Formula & Molecular Weight

Molecular Formula: C18H30O3S

Molecular Weight: 326.49

Structure

Properties

Appearance    (1), brown to dark brown viscous liquid.

Solubility    slightly soluble in water.

Stability    stable.

Risk    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    biodegradable.

Characteristics    excellent cleansing, foaming, emulsifying, wetting, dispersing, solubilizing abilities.

Synthesis

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

Generally, 4-(1-ethyldecyl)benzene and sulfur trioxide react through reactor, 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

Actives, %, ≥

96.0

pH (25°C, dope), <

1

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

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, Household detergents

Use as cleansing agent, foaming agent.

3, Industrial cleaning agents

Use as cleansing agent, emulsifying agent. Such as: vehicle detergent, metal cleaning agent.

4, Emulsion polymerization

Emulsifier, particle size controlling agent in emulsion polymerization.

5, Pets

Use as cleansing agent, foaming agent.

Manufacturers