Linear alkylbenzene sulfonates 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.
Why are linear alkylbenzene sulfonates LAS the preferred choice of detergents as opposed to branched alkylbenzene sulfonates Bas?
A detergent containing linear alkyl benzene sulphonate is better than a detergent with branched alkyl benzene sulphonate. LAS replaced branched dodecylbenzene sulfonates, which were phased out because they biodegrade more slowly.
What is linear sulfonate?
Linear alkyl sulfonate (LAS) is an anionic surfactant widely used in detergents and cleaners, both in industrial and household applications. The linear alkyl chain of the LAS makes the molecule more biodegradable than branched alkyl benzene sulfonates. LAS is found in waste water.
What is linear alkyl benzene sulfonate?
Linear alkylbenzene sulfonate (LAS), 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. The LABSA market is driven by the markets for LAS, primarily household detergents.
Is linear alkylbenzene sulfonate toxic?
Linear alkylbenzene sulfonate (LAS) is a common organic pollutant in freshwater environments. Studies have shown that the toxicity of LAS to aquatic plants is directly related to the LAS concentration and depends on the plant species.
Is linear alkylbenzene sulfonate an organic compound?
Alkyl benzene sulfonate (ABS) is an organic chemical compound primarily used as a surfactant. Linear alkylbenzene sulfonate (LAS), a biodegradable surfactant, is manufactured from sulfonation of linear alkyl benzene.
What is linear alkylbenzene used for?
Linear Alkyl Benzene (LAB) is used as surfactant in dilute solutions for their cleaning properties. Linear alkyl benzene is derived from petroleum and is the major detergent being used today, because of its low cost. LAB is the basic raw material for production of most widely used detergent.
Why are linear alkyl sulfonates better for the environment than branched alkylbenzene sulfonates?
It is very stable in hard water as well as in low acidic and alkaline media. Although both ABS and LAS eventually fully degrade in an aerobic environment, linear ABS (LAS) biodegrades much faster than highly branched ABS (BAS). Adequate aerobic sewage treatment facilities are required for either of them to degrade.
Is sodium Las harmful?
Consumers will usually not come into contact with the substance bulk and the substance is used diluted in consumer products, therefore, it is considered that LAS gives rise no hazardous effects to human health.
Is sodium alkylbenzene sulfonate safe?
HAZARD SUMMARY * Sodium Dodecylbenzene Sulfonate can affect you when breathed in. * Contact can irritate the skin and eyes with possible eye damage. * Breathing Sodium Dodecylbenzene Sulfonate can irritate the nose, throat and lungs causing coughing, wheezing and/or shortness of breath.
What is another name for linear alkylbenzene sulfonate?
Linear alkylbenzenes (sometimes also known as LABs) are a family of organic compounds with the formula C6H5CnH2n+1….Linear alkylbenzene.
| Names | |
|---|---|
| Other names LAB, linear alkyl benzene | |
| Identifiers | |
| CAS Number | 67774-74-7 (C10-13 alkyl) |
| ChemSpider | none |
What is linear alkylbenzene sulfonate?
Linear alkylbenzene sulfonate (LAS), 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. The LABSA market is driven by the markets for LAS, primarily household detergents.
What is Las sulfonic acid?
Linear Alkyl benzene Sulfonic Acid (LAS) is the main ingredient of many commercial formulations for industrial and domestic synthetic detergents. The current industrial LAS production method includes sulfonation of linear alkylbenzene (LAB) with sulfur trioxide in tubular falling film reactors.
What determines the distribution of phenyl isomers in commercial Las?
The catalyst used to make the LAB determines the distribution of the phenyl isomers in commercial LAS with the proportion of the 2-phenyl isomers ranging from 18 to 28% (Valtorta et al., 2000).
