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Sulfobetaine 10

(Detergent zwitterionic)


S120   N-Decyl-N,N-dimethyl-3-ammonio-1-propanesulfonate, 99+%
[ 15163-36-7 ]   f.w.: 307.6 daltons

A synthetic zwitterionic detergent, which unlike other amphoteric surfactants, retains its zwitterionic character over a broad pH range.



Quantity Price  
5gm $37.00
25gm $175.00


A synthetic zwitterionic detergent, which unlike other amphoteric surfactants, retains its zwitterionic character over a broad pH range. This property is attributed to the presence of a strongly basic quaternary ammonium ion and an acidic sulfonate ion of equal strength. This ionic balance presumably prevents irreversible binding to either anionic or cationic compounds. Aggregation number: 41.

  1. Byers, S., et al. 1987. J. Biol. Chem. 262, 9166.
  • CMC (H2O): ~ 39 mM (1.2%)
  • Aggregation Number (H2O)(2): ~ 41
  • Purity:  98% pure by HPLC analysis.
  • pH (1% solution): 5-8
  • Solubility in water at 20°C: ? 30%
  • Conductance (10% solution): < 70 S
  • Percent fluorescence due to a 0.1% detergent solution at 345 nm: < 10
  • Absorbance of a 1% detergent solution: 340 nm: < 0.02 280 nm: < 0.04 260 nm: < 0.06 225 nm: < 0.1