Composition:
Appearance: Brown Viscous Liquid
Packing: 25kg/drum or as discussed
Shelf Life: 2 years
Storage: Store in cool and dry area
Certification:ISO GMP KOSHER HALAL
Product detail:
Name: LAS(Linear Alkyl Benzene Sulfonic Acid)
CAS: 42615-29-2
Feature:
LAS(Linear Alkyl Benzene Sulfonic Acid) are anionic surfactants. LAS(Linear Alkyl Benzene Sulfonic Acid), the world's largest-volume synthetic surfactant, which includes the various salts of sulfonated alkylbenzenes, is widely used in household detergents as well as in numerous industrial applications. Linear alkyl benzene sulphonic acids are a mixtures of benzene sulphonic acids containing linear alkyl chains of different lengths (C9: less than 1%, C10: 8 to 16%, C11: 26 to 38%, C12: 26 to 38%, C13: 15 to 27% and longer than C13: less than 2.5%).
LAS(Linear Alkyl Benzene Sulfonic Acid) are prepared industrially by the sulfonation of linear alkylbenzenes (LABs), which can themselves be prepared in several ways. In the most common route benzene is alkylated by long chain monoalkenes (e.g. dodecene) using hydrogen fluoride as a catalyst. The purified dodecylbenzenes (and related derivatives) are then sulfonated with sulfur trioxide to give the sulfonic acid. The sulfonic acid is subsequently neutralized with sodium hydroxide. The term "linear" refers to the starting alkenes rather than the final product, perfectly linear addition products are not seen, in-line with Markovnikov's rule. Thus, the alkylation of linear alkenes, even 1-alkenes such as 1-dodecene, gives several isomers of phenyldodecane.
LAS(Linear Alkyl Benzene Sulfonic Acid) has the following applications/functions:
1. LAS(Linear Alkyl Benzene Sulfonic Acid) performs slightly better in normal use conditions, due to it being less affected by hard water. Within LAS itself the detergency of the various isomers are fairly similar, however their physical properties (Krafft point, foaming etc.) are noticeably different. In particular the Krafft point of the high 2-phenyl product (i.e. the least branched isomer) remains below 0 °C up to 25% LAS whereas the low 2-phenyl cloud point is ~15 °C. This behavior is often exploited by producers to create either clear or cloudy products.
2. LAS(Linear Alkyl Benzene Sulfonic Acid) is used as a washing and mercerizing agent in the textile industry. The surface area of distempers is increased using LAS. It is used as a wetting agent as well as an emulsifier in small quantities along with other surfactants, for foaming of toilet soaps.
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