Registration Dossier
Registration Dossier
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EC number: 903-816-3 | CAS number: -
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The data are from an official Japanese database that is well recognised by National authorities. The results are considered as reliable with restrictions although the details of the experiments are not given.
Data source
Reference
- Reference Type:
- publication
- Title:
- Biodegradation and bioaccumulation data of existing chemicals based on the CSCL Japan.
- Author:
- Chemicals Inspection and Testing Institute
- Year:
- 1 992
- Bibliographic source:
- ISBN 4-89074- 101-1
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- Deviations:
- not applicable
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 3-chloropropene
- EC Number:
- 203-457-6
- EC Name:
- 3-chloropropene
- Cas Number:
- 107-05-1
- Molecular formula:
- C3H5Cl
- IUPAC Name:
- 3-chloroprop-1-ene
- Details on test material:
- As per IUCLID5 Sections 1.1. - 1.4. for 3-chloropene.
Constituent 1
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
As per IUCLID5 Sections 1.1. - 1.4. for 3-chloropene.
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- Concentration of sludge (as concentration of suspended solid): 30 mg/L.
- Duration of test (contact time):
- ca. 28 d
Initial test substance concentration
- Initial conc.:
- ca. 100 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimationopen allclose all
- Parameter followed for biodegradation estimation:
- O2 consumption
- Parameter followed for biodegradation estimation:
- TOC removal
- Parameter followed for biodegradation estimation:
- test mat. analysis
- Details on study design:
- As per O.E.C.D. Testing Guideline 301 C Modified MITI Test.
Reference substance
- Reference substance:
- not specified
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 62
- Sampling time:
- 28 d
- Parameter:
- % degradation (TOC removal)
- Value:
- ca. 66
- Sampling time:
- 28 d
- Parameter:
- % degradation (test mat. analysis)
- Value:
- ca. 95
- Sampling time:
- 28 d
BOD5 / COD results
- Results with reference substance:
- No data
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- readily biodegradable, but failing 10-day window
- Conclusions:
- The modified MITI test results indicates the ready biodegradability of 3-chloropropene with removal rates after 28 days of between 55 and 69 % based on BOD. Based on the available data ready biodegradability of AC Light Ends is expected.
- Executive summary:
An O.E.C.D. 301 C Modified MITI Test was conducted on 3 -chloropropene to assess ready biodegradability. The modified MITI test results indicates the ready biodegradability of 3-chloropropene with removal rates after 28 days of between 55 and 69 % based on BOD. Based on the available data ready biodegradability of AC Light Ends is expected.
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