LABSA or Linear alkyl benzene Sulfonic acid is an organic chemical from the sulfur group and it is a strong acid, which is a brown liquid with high viscosity and a viscous state in its natural form. CH3 (CH2) 11C6H4SO3H is its chemical formula. it can be said that sulfonic acid is a million times stronger than similar acids such as acetic acid or benzoic acid. Sulfonic acid is generally classified as an alkyl that is produced by the combustion of sulfur.
The chemical structure of sulfonic acid can be seen in the following figure:
One of the characteristic features of this sulfonic acid is its high viscosity, which has a viscosity similar to honey. If the purity of this material is high, its color will be burnt or dark brown. Since sulfonic acid has a slight odor, having a strong odor indicates that this product is not good.
Acid sulfonic is well compatible with water, it is soluble in water and also widely used in the detergent industry. This strong acid is very useful in the formulation of most detergent compounds in the role of foaming, cleaning, and stain removal agent. The price of this material is also cheap. This chemical is a moisture-absorbing and non-volatile chemical.
This article has other names such as Lauryl benzenesulfonic acid and Dodecylbenzene sulphonic acid.
Physical and chemical properties of LABSA:
The distinctive feature of this acid is its high strength and it is also used as a catalyst. LABSA has a lipophilic property and removes strong stains and fats. Due to its high acidic strength, it is also used to clean surfaces.
The most important physical and chemical properties of this material can be summarized in the following table:
|Molecular weight (g/mol)||326.49|
|Boiling point (°C)||315|
|Melting point (°C)||10|
|solubility||Readily soluble in water|
Synthesis and production of LABSA:
This linear alkyl can be obtained from the reaction of two alkyl benzene sulfonic substances with sulfur trioxide. When performing this reaction, to produce this substance, safety precautions must be fully observed and the production site (factory or laboratory) must have strong ventilation and be appropriate.
LABSA has the potential to be converted to esters. Sulfonic esters such as methyl triflate are good alkylating agents in organic systems. These sulfonate esters are often produced by the alkylation of sulfonyl chlorides.
It is also can be halogenated. Sulfonyl halide groups are formed when the sulfonyl functional group forms a single bond with a halogen atom. These products are produced by chlorination of sulfonic acids with the help of thionyl chloride and related reactants.
Displacement: Although the bond is strong, the bond (aryl) can be broken with the help of special nucleophiles. Alpha sulfonation in ant roquin is associated with the displacement of a sulfonate group with other nucleophiles that cannot bind directly. A primary method for phenol production involves the hydrolysis of sodium benzene sulfonate, which can be obtained directly from benzene.
Applications and uses of sulfamic acid:
- The most important applications of this acid are its use in the production of detergents and its consumption in the formulation of these materials, but it is also used as an additive in the production of various types of concrete.
- LABSA is also used in the paint industry, most of the washable dyes are either sulfonic acid or have sulfonyl agents in their structure.
- It is used in the pharmaceutical industry as an important and practical factor. For example, they play an important role in the production of antibacterial drugs and infection control drugs.
- It Used in the production of batteries.
It is flammable and releases carbon dioxide when it burns. A suitable water spray or foam can be used to control the fire.
In general, all safety and health issues should be observed when working with this substance and direct contact with the eyes should be strictly avoided because it causes severe eye burns and in more serious cases, there is a risk of blindness, in case of contact Rinse with water for 15 minutes and wear safety goggles.
If swallowed, it can irritate the gastrointestinal tract, and if it comes in contact with the skin, it can cause a burning sensation or cause inflammation, so avoid direct contact with the skin.
Be sure to use a mask and avoid inhaling its vapors.
Transporting and storage:
Store in tightly closed containers in a cool, dry place.