3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctanesulphonic acid

Biodegradation in water and sediment: simulation tests

Administrative data

Endpoint:

biodegradation in water: sewage treatment simulation testing

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Data source

Reference

Reference Type:

publication

Title:

Unnamed

Year:

2010

Report date:

2010

Materials and methods

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Potassium 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctanesulphonate

EC Number:

261-818-3

EC Name:

Potassium 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctanesulphonate

Cas Number:

59587-38-1

Molecular formula:

C8H5F13O3S.K

IUPAC Name:

potassium 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctane-1-sulfonate

Test material form:

solid

Details on test material:

Purity: 97.1%

Specific details on test material used for the study:

6:2 Fluorotelomer sulfonate, potassium salt

Purity > 99 %

Study design

Inoculum or test system:

activated sludge (adaptation not specified)

Details on inoculum:

Activated sludge (2 L in a 4 L container) was collected the sameday the experiment was initiated from waste water treatmentplants (WWTPs) in the states of Pennsylvania, Maryland, and Delaware. The sludge was aerated at room temperature to suspend themicroorganisms and used as the inoculums or was autoclaved assterile controls. 129-mL glass serum sample bottles were used astest vessels. In each test vessel, 3 mL of activated sludge suspension was mixed with 27 mL of mineral media. The 10-fold dilution of the activated sludge was aimed to minimize potential absorption of 6:2 FTS and potential transformation products by activated sludge.

Duration of test (contact time):

90 d