Premium
Effect of carbon chain and phenyl isomer distribution on use properties of linear alkylbenzene sulfonate: A comparison of ‘high’ and ‘low’ 2‐phenyl LAS homologs
Author(s) -
Matheson K. Lee,
Matsoim Ted P.
Publication year - 1983
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02662436
Subject(s) - alkyl , carbon chain , linear alkylbenzene , carbon fibers , sulfonate , surface tension , materials science , phosphate , carbon number , chain (unit) , chemistry , organic chemistry , composite material , pulmonary surfactant , metallurgy , thermodynamics , sodium , physics , composite number , biochemistry , astronomy
Phenyl isomer distributions, within current commercial limits of HF and A1C13 linear alkylbenzene sulfonates (LAS), have little effect on dishwashing performance in light‐duty liquids (LDL), detergency performance in heavy‐duty powders (HDP), and interfacial tension value. The most important factor in determining performance differences among commercial LAS samples is carbon chain homolog distribution. Both HF and A1C1 3 LAS perform equally well and can be used interchangeably in high‐performance products. The optimum for foam stability in light‐duty liquids shifts towards shorter alkyl chain length as water hardness increases. At 0 ppm water hardness the optimum occurs at C 13 : at 50–150 ppm the optimum moves to C 11 and C 12 ; and above 150 ppm the optimum shifts to include C 10 , C 11 and C, 12 . The detergency performance optimum range in a phosphate built heavy‐duty powder at 50 and 150 ppm water hardness includes the C 12 , C 13 and C 14 alkyl chain lengths. In a nonphosphate built powder the optimum is similar at 50 ppm hardness to that of a phosphate built powder, but shifts at 150 ppm hardness to include C 11 , C 12 and C 13 .