| R-O(CH2-CH2O)n-CH2-COO-X | R(-O-CH2-CH2)n-OH |
| Ether carboxylic derivative surfactants (EC-R12–14E10, EC-R12–14E3, EC-R8E5) |
Fatty-alcohol ethoxylates (FAE-R12–14E11) |
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