Welcome to Guangzhou Cosoonchem Technology Development Co.,


Fatty alcohol polyoxyethylene ether sodium sulfate (AES)

First, the structure of AES

AES is the abbreviation of anionic surfactant sodium fatty alcohol ethoxylate sulfate. It is a modified product made from nonionic surfactant fatty alcohol ethoxylates (AEO) sulfated by sulfating agent and then neutralized by alkaline neutralizer. Its molecular structure has oxyethylene groups and sulfated groups, and it has the properties of both nonionic and anionic surfactants. It has strong wetting, dispersing, emulsifying and decontaminating power; very good resistance to hard water and biodegradability; rich foaming power, low irritation to skin, mild use, transparent and stable solution. Translated with www.DeepL.com/Translator (free version)

Name: Sodium fatty alcohol polyoxyethylene ether sulfate

Molecular formula:RO(CH2CH2O)n-SO3Na (n=2 or 3, R is 12~15 alkyl)


II. Preparation of AES

Fatty alcohol polyoxyethylene ether sulfate (AES) is a class of anionic surfactants obtained by sulfating and neutralizing SO3 with fatty alcohol polyoxyethylene ether (AEO) as raw material.

AES is prepared in two steps: sulfation and neutralization

2.1 Sulfation

2.1.1 Reaction mechanism

The reaction mechanism of AEO and SO3 sulfation may be that AEO reacts with 2 molecules of SO3 to form an unstable intermediate, which in turn reacts with AEO molecules to form fatty alcohol polyoxyethylene ether sulfate

Typical sulfation conditions for AEO are: SO3 inlet gas temperature of about 45°C, sulfonator circulating cooling water temperature of 30 to 35°C, SO3/AEO molar ratio of 1.01 to 1.02, SO3 gas concentration of 2.5 to 3.5%. 2.2 Neutralization of fatty alcohol polyoxyethylene ether sulfate is unstable, and prolonged placement will make the product decompose and deepen in color, so it needs to be neutralized immediately to prevent decomposition and dioxin The neutralization temperature should be 45℃~50℃ to prevent the decomposition of the neutralized product by acid return.

Third, the main use

AES is mainly used in daily chemical detergents: such as industrial detergents, household detergents, bath detergents, shampoos, tableware detergents and cosmetic emulsifiers, as well as textile, machinery, petroleum, construction, soap and other industrial special chemicals, the use is very wide.

*Disclaimer: The content contained in this article comes from the Internet, WeChat public numbers and other public channels, and we maintain a neutral attitude toward the views expressed in the article. This article is for reference and exchange only. The copyright of the reproduced manuscript belongs to the original author and the institution, and if there is any infringementPlease contact Jetson Chemical for deletion



Related News

Application of surfactants in pigment surface treatment

It is found that fatty amine type nonionic surfactants can play a good effect on the surface treatment of pigments, the reason why they can play this good effect is that: these surfactants can be adsorbed onto the surface of pigments by forming hydrogen bonds with nitrogen on the surface of pigments through one H


Role of surfactants in the paper industry

Paper is made from pulp. Pulp is made from certain plants, such as wood, grass, cotton as raw materials, using chemical or mechanical methods to remove all or most of the impurities, to obtain a pure or nearly pure plant fiber pulp. Pulp in addition to the main component of the composition of the fiber


Disinfectant applications and market size analysis

China’s disinfectant industry is growing rapidly and its market size is expanding due to policy and the new coronavirus pneumonia outbreak. In terms of application areas, disinfectants are mainly used in agriculture, medical, industrial, animal husbandry and public facilities. The agricultural sector accounts for 24%, medical sector accounts for 21%, industrial sector accounts for 18%,

About dishwasher supplies and how to use them

Dishwasher consumables classification. There are generally 4 categories. 1、Dishwashing cleaning class – dishwashing powder / dishwashing block / dishwashing gel / dishwashing liquid This is the most important consumable for dishwashers, which is used every time you wash dishes, and is responsible for removing grease and stains and cleaning dishes. Since dishwashers cannot use traditional

Scroll to Top