Table 1: Properties of Various Detergents

Detergent MW Class CMC (mM)*, a CMC (mM)b CMC (mM)c
Triton X-100 625 (avgas) Nonionic 0.24 0.26 0.24
Tween 20 1228 (avg) Nonionic 0.06 0.066 0.058
Tween 80 1310 (avg) Nonionic 0.01 0.014 0.01
CTAB 364 Cationic 0.92 1.1 0.9
Na cholate 430.5 Anionic 14.0 14.6 14.6
SDS 288 Anionic 2.0 2.2 2.0

* The error on the CMC determinations is 10%.
a Literature values [35].
b Measured in 100 mM TAPS pH 9.0.
c Measured in 100 mM TAPS pH 9.0 and 3 mM pNPL.