[Castor oil supply and sales] The earliest anionic surfactant: sulfated castor oil

Castor oil is a triglyceride of fatty acids. Castor oil is found in castor beans In the seeds, its content is 35% to 57.%. “Castor oil is obtained by squeezing or solvent extraction. It is almost colorless or slightly yellow, clear and viscous liquid; has a slight odor; has a light taste and then is slightly pungent, and is easily soluble in ethanol. , can be mixed with absolute ethanol, chloroform, ether or glacial acetic acid.

There are many derivatives of castor oil. Today, the supplier of castor oil will take you to learn about one of them, sulfated castor. Sesame oil:

Sulfated castor oil is the earliest anionic surfactant and is still used today.

Castor oil reacts with sulfuric acid, and the reaction product is often classified as low in commercial products. There are two categories: highly sulfated oil and highly sulfated oil. The former generally contains no more than 3% combined sulfuric acid and 40% to 60% water. It has high solubility in water, good wettability and permeability, and has strong emulsifying ability; The latter has a combined sulfuric acid content of more than 15%, can be dissolved in more than 10% concentrated solution, and is a completely transparent liquid that can show surface activity, which is a characteristic that many surfactants do not have.

Sulfated oil is a kind of industrial surfactant that is used in large amounts. It is commonly used as leather fatliquor, leather finishing, and leather dyeing lubricant. It has the functions of emulsification and penetration.