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EC number: 235-795-5 | CAS number: 12738-64-6
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- following GLP
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- Version / remarks:
- 17 july 1992
- Qualifier:
- according to guideline
- Guideline:
- other: Testing guidelines forfor the studies of chemicals, section 4.3 Biodegradation Study (Ready Biodegradability) Modified MITI (I) test (Notification number 2017-4, issued by the National institute of environemtal research, Korea on May 2017)
- GLP compliance:
- yes (incl. QA statement)
- Specific details on test material used for the study:
- Lot no. 161228BO5
CAS: 12738-64-6
C61H50O18
Solid
Purity: 100%
Expiration date: 2018.01.31
Supplier: MiWON Speciality Chemical Co., Ltd. - Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: 4 domestic STP, 3 Industrial STP and 5 rivers
- Duration of test (contact time):
- 28 d
- Initial conc.:
- 100 mg/L
- Based on:
- other:
- Remarks:
- (w/v)
- Details on study design:
- Temperature: 25+/-1 i degrees celcius
Inoculum: 10E7-10E8 cells/mL
Duration: 28 days - Reference substance:
- aniline
- Key result
- Parameter:
- other: Observed by BOD measurements
- Value:
- 0
- Sampling time:
- 28 d
- Results with reference substance:
- 67% biodegradation after 7 days
76% biodegradation after 14 days
Observed by BOD measurements - Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The test substance is shown to be not ready biodegradable (0% biodegradation within 28 days) in an OECD 301C test.
- Executive summary:
A ready biodegradation study according to the OECD guideline no 301C anf following GLP was conducted.
Inoculum from 12 different sources were applied including 4 domestic STP, 3 industrial STP and 5 rivers
After 28 days 0% biodegradation was observed and it is concluded that the test substance is not ready biodegradable.
Reference
Description of key information
A ready biodegradation study according to the OECD guideline no 301C anf following GLP was conducted.
Inoculum from 12 different sources were applied including 4 domestic STP, 3 industrial STP and 5 rivers
After 28 days 0% biodegradation was observed and it is concluded that the test substance isnot ready biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
A ready biodegradation study according to the OECD guideline no 301C anf following GLP was conducted.
Inoculum from 12 different sources were applied including 4 domestic STP, 3 industrial STP and 5 rivers
After 28 days 0% biodegradation was observed and it is concluded that the test substance isnot ready biodegradable.
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