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EC number: 201-250-5 | CAS number: 80-09-1
Biodegradation in water and sediment: simulation tests
Administrative data
- Endpoint:
- biodegradation in water: simulation testing on ultimate degradation in surface water
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: No official guideline followed but study well designed, conducted and sufficiently documented.
Data source
Reference
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 2 009
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 306 (Biodegradability in Seawater)
- Deviations:
- yes
- Remarks:
- Tested concentrations: 4 - 9 mg/L as TOC; Incubation temperature: 28 °C
- GLP compliance:
- no
Test material
- Reference substance name:
- 4,4'-sulphonyldiphenol
- EC Number:
- 201-250-5
- EC Name:
- 4,4'-sulphonyldiphenol
- Cas Number:
- 80-09-1
- Molecular formula:
- C12H10O4S
- IUPAC Name:
- 4,4'-sulfonyldiphenol
- Details on test material:
- 4,4'-sulfonyldiphenol obtained from TCI Chemicals, Tokyo, Japan. Purity not specified
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- natural water
- Details on source and properties of surface water:
- Seawater was collected in December, january and October at two sites in the bay of Osaka, Japan:
- south port area of the city (+34° 38' 12.39", +135° 24' 41.67")
- north port area (+34° 39' 53.30", +135° 25' 15.35")
Water quality parameters:
pH: 7.4 - 8.2
Turb. (mg/L): 0 - 12
DO (mg/L): 4.3 - 11.4
Temp. (°C): 8.6 - 23.4
Cond (S/m). 4.1 - 4.9
CFU/mL: 300 - 5300
CFU: Colony Forming Units - Duration of test (contact time):
- 60 d
Initial test substance concentration
- Initial conc.:
- >= 4 - <= 9 mg/L
- Based on:
- other: TOC
Results and discussion
% Degradation
- % Degr.:
- 0
- Parameter:
- test mat. analysis
- Sampling time:
- 60 d
- Transformation products:
- no
- Details on results:
- Mass balance
Sum of daily mass load of BPS through all WWTPs (mean, unit: g):
influent: 56.2 (thereof 1.19 adsorbed mass)
effluent: 0.703 (thereof 0.107 adsorbed mass)
sludge: 0.259
Applicant's summary and conclusion
- Conclusions:
- The concentration of 4,4'-sulfonyldiphenol remained unchanged over the test period of 60 days in the sea die-away simulation test samples.
- Executive summary:
In this study, the biodegradation behaviors of three bisphenolss, namely BPA (4,4'-isopropylidenediphenol),
BPF (4,4'-methylenediphenol) and BPS (4,4'-sulfonyldiphenol) in seawater were investigated over a test period of 60 days using TOC Handai (TOC, potential test) and sea die-away (SDA, simulation test) methods, which are both a kind of river-die-away test.
Degradation of 4,4'-sulfonyldiphenol could not be detected in this study.
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