Description
GENERAL INFORMATION
Chemical name: Linear Alkyl Benzene Sulphonic Acid
CAS No.: 27176-87-0
Molecular formula: C18H30O3S
Standard executed: GB/T 8447-2008
Packaging: in 210KG plastic drum or 1050KG IBC tank
Description
Linear alkylbenzene sulfonate (LAS) is now the world’s largest-volume synthetic surfactant, which includes the various salts of sulfonated alkylbenzenes. It’s widely used in household detergents as well as numerous industrial applications.
LABSA is an anionic surfactant, with molecules belonging to a hydrophilic and a hydrophobic group. This is a nonvolatile chemical compound, synthesized through the process of sulfonation. The sulfonation process includes reagents like sulfuric acid, chlorosulfonic acid, sulfamic acid, and diluted sulfur trioxide.
The starting material LAB (linear alkylbenzene) is a product of the alkylation of benzene with n-paraffins. The catalyst is either hydrogen fluoride (HF) or aluminum chloride (AICI3). LAS is further produced by the sulfonation of LAB with oleum in batch reactors.
As a compound of homologs, LABSA comprises various alkyl chain lengths (C10 to C13 or C14) together with phenyl positional isomers of 2 to 5-phenyl. The phenyl proportions are dictated by the starting materials and reaction conditions. Each of those contains an aromatic ring. Sulfonated at the para position, it’s attached to a linear alkyl chain at any position, with the exception of terminal one (1-phenyl).
The chemical and physical properties of LABSA differ based on the length of the alkyl chain. This results in a variety of formulations, adequate for many applications. The resulting surfactants are often used in the chemical industry to improve contact between water and minerals.
The majority of other applications are featured in industrial, institutional, and commercial cleaners. LABSA is also used as an emulsifier and as a wetting agent.
Stability/Shelf life
Stable. Hygroscopic. Incompatible with bases, metals, and oxidizing agents.
Recommended storage: Dry, tight-closed, ideally in its original packaging, in low to moderate temperatures and in a dry and cool place, kept away from direct sun and water.
Manufacturing
LABSA is commercially prepared by sulfonating linear alkylbenzene (LAB).
LABSA is a significant ingredient in the manufacturing of washing, detergent, and cleaning powders, as well as detergent cake, liquid and oil soaps, scouring bars, and a variety of anionic specialty formulations. It’s used as a washing and mercerizing agent in the textile industry. Finally, LABSA has application as a wetting agent/emulsifier in small quantities along with other surfactants, for foaming of toilet soaps.
Consumer use
Linear alkylbenzene sulfonic acid is principally used in the production of household detergents, including laundry powders, laundry liquids, dishwashing liquids, and various household cleaners.
Over 80% of LABSA is used in household detergents. Small volumes are also applied in personal care manufacturing.
Solubility
Soluble in water, alcohols, glycols, glycol ethers, esters, ketones, aromatic and aliphatic hydrocarbons.
Common synonyms
- Dodecylbenzene Sulfonic Acid (Strait Chain)
- LAS
- LABSA
- Laurylbenzenesulfonic Acid
- Laurylbenzenesulfonate
- n-Dodecylbenzene Sulfonic Acid
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