Blogs/News/PSAs

Anionic surfactant has a longest history, highest output and most various types. It is classified according to the structures of their hydrophilic groups: sulfonates and sulfates, which are the main types of anionic surfactants. The various functions of surfactants are mainly manifested in changing the properties of the liquid surface, the liquid-liquid interface and the liquid-solid interface.

Sodium Laureth(2) Sulfate (AES/SLES)

Chemical Formula: C12H26Na2O5S

CAS No.: 68585-34-2

Dangerous Grade: Non-dangerous

Sodium Alpha Olefin Sulfonate (AOS-35)

Chemical Formula: R-CH=CH-(CH2)n-SO3Na

CAS No.: 68439-57-6

Dangerous Grade: Non-dangerous

C12-14 Linear Alkyl Benzene Sulfonate（LAS）

Chemical Formula:C18H30O3S

CAS No.:27176-87-0

Dangerous Grade: 8

Common anionic surfactant:

Sulfate, sulfonate, and phosphate esters

Anionic surfactants contain anionic functional groups at their head, such as sulfate,sulfonate, phosphate, and carboxylates. Prominent alkyl sulfates include ammonium lauryl sulfate, sodium lauryl sulfate (sodium dodecyl sulfate, SLS, or SDS), and the related alkyl-ether sulfates sodium laureth sulfate (sodium lauryl ether sulfate or SLES), and sodium myreth sulfate. Carboxylates are the most common surfactants and comprise the carboxylate salts (soaps), such as sodium stearate. More specialized species include sodium lauroyl sarcosinate and carboxylate-based fluorosurfactants such as perfluorononanoate,   perfluorooctanoate (PFOA or PFO).

Anionic surfactants take many advantages  in mature production process,  great availability of raw materials, and a wide range of applications. Therefore, it is widely used in many fields such as agriculture, industrial cleaning, textile printing and dyeing, and household chemicals.

1. Agriculture

The use of anionic and non-ionic formulations as pesticide emulsifiers can reduce the usage of emulsifier from 20% ~40% to 3% ~ 10%. This will help improve the chemical stability of pesticides, while reducing costs, pollution,so ensure the efficiency of utilization. In addition, alkylbenzene sulfonates, lignosulfonates are often added into insecticides, rust removers, and plant growth regulators as emulsifiers and anionic wetting agent to improve soil quality.

2. Construction industry

In architectural coatings, surfactants primarily act as wetting, emulsifying, dispersing, stabilizing and antistatic agent.

3. Cosmetics industry

The use of anionic surfactants in cosmetics has become more widespread in recent years and its main role is as emulsifiers, solubilizers, wetting agents and effective component synergists.

4. Oil field industry

Surfactants play an important role in the chemical oil displacement process. They can reduce the oil/water interfacial tension and increase the number of capillary tubes, thereby greatly improving the oil recovery.

5. Textile industry

Many processes in the textile printing industry require the use of a large amount of surfactants. For example, a large number of anionic surfactants with cleaning performance are used in the pretreatment process, anionic surfactants with infiltrating performance are used in the dyeing and finishing processes. In addition, some functional products such as leveling agents, fixing agents, etc., are also of anionic type.

6. Daily chemical industry

Anionic surfactants are widely used in daily chemicals. The most common application is soap. The main ingredient is sodium stearate. Anionic products have the characteristics of high foam and delicate performance, low price and so on, which can reduce the cost of the liquid detergent and other products, as well as improve the product transparency.

Coconut oil aminopropyl betaine(CAPB)can be extracted from coconut oil and dimethylaminopropylamine. CAPB is a surfactant. It can be added to personal care products or used in bath products such as shampoo and soap for washing hands. It's also an organic compound. And you can see from its name that the main part of its molecule, the lauric acid group, comes from coconut oil. CAPB is a medium-strength surfactant that can also be used in cosmetics and has an emulsifying and thickening effect. It can also be used as an antistatic agent in hair toners that do not irritate the skin or mucous membranes. It is also added to personal hygiene products as a preservative.

Lipophilic, lipophilic and hydrophilic properties are chemical properties of surfactants, so surfactants can remove dirt and oil from the skin. Surfactants can reduce the surface tension of water, making it easier to wet, thus removing oil and dirt from the skin. So it's also a detergent

Some surfactants are very irritant to the skin, but coconut oil aminopropyl betaine usually does not irritate the skin. So the coconut oil aminopropyl betaine is added to baby soap and shampoo. Because of the thickening and foaming properties of coconut oil aminopropyl betaine, it helps to moisturize the skin. It is generally used as a cleaner. However, some people are sensitive skin and may have an allergic reaction to the compound. So using cosmetics that contain coconut oil, amide propyl betaine, can cause red, itchy or peeling skin, It could be that surfactants can cause contact dermatitis. See a dermatologist. 

If you are looking for cocoamidopropyl betaine China, just contact us!