Fatty acids, C12-14, .alpha.-sulfo, disodium salts

Adsorption / desorption

Description of key information

For the test item the KOC in soil and sewage sludge was determined according to OECD 121 by using the HPLC method. The determined log KOC ranges between 2.43 - 3.28. Column temperature: 30°C

                                                             tR mean [min]       Capcacity factor k'=(tr-t0)/t0       log k'               log Koc

test item Peak 1 (4.2 % area-%)              4.703                     0.818                                          -0.087             2.43

test item Peak 2 (72.3 % area-%)             5.193                     1.007                                          0.003              2.72

test item Peak 3 (23.4 % area-%)             6.507                     1.515                                          0.180              3.28

please note: pH values of solutions could not be determined as pH value is defined for aqueous solutions.

                   tR mean [min]       Capcacity factor k'=(tr-t0)/t0       log k'       log Koc

test item Peak 1 (4.2 % area-%)       4.703                     0.818              -0.087       2.43

test item Peak 2 (72.3 % area-%)       5.193                     1.007              0.003       2.72

test item Peak 3 (23.4 % area-%)       6.507                     1.515              0.180       3.28

Key value for chemical safety assessment

Koc at 20 °C:

525

Additional information

[LogKoc: 2.72]