Table 1.

Chemical formulae and properties of surfactants used.

Commercial nameChemical nameFormulaMn (g mol−1)Melting point (°C)
Brij 30polyoxyethylene (4) lauryl etherC12H25(OCH2CH2)nOH (n ~ 4)36241
Brij 56polyoxyethylene (10) cetyl etherC16H33(OCH2CH2)nOH (n ~ 10)68332–34
Igepal CA720polyexyethylene (12) isooctylphenyl ether4–C8H17(OCH2CH2)nOH (n~12)73513