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  CMC of mixed surfactants compared to one surfactant alone

  Posted by Abdullah on January 15, 2023 at 5:26 am

  According to Stepan, cmc of ALPHA-STEP® PC-48(Sodium methyl 2-sulfolaurate (and) Disodium
  2-sulfolaurate) is 177 and CMC of LATHANOL® LAL Powder(Sodium lauryl sulfoacetate) is 131. But CMC of STEPAN-MILD® PCL( blend of Sodium methyl 2-sulfolaurate (and) Disodium

  2-sulfolaurate (and) Sodium lauryl sulfoacetate) is 65, that is a big decrease in CMC of mixture. 

  My questions are 

  1. If we combine two surfactants A+B, will CMC be equal to CMC of A+B or different? 

  2. CMC of SLS is 185 and CMC of SLES is 171. If we use a 1:1 blend of SLS: SLES, will the CMC be 178 or anything else? 

  3. Do you know what is the CMC of SLS: SLES blend, specially 1:1 blend? 

  Abdullah replied 1 year, 10 months ago 1 Member · 0 Replies

  • cmc
  • sles
  • sls
  • surfactant
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