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EC number: 701-402-5 | CAS number: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Remarks:
- BOD5 determined
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 29.01.1992 - 30.03.1992
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- ISO 5815 (Water quality - Determination of Biochemical Oxygen Demand after 5 Days (BOD5) - Dilution and Seeding Method)
- GLP compliance:
- yes
- Specific details on test material used for the study:
- Physical appearance: liquid
Batch No.: 746916/1991
Expiry date: September 1996 - Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: seeding water of an urban waste water
- Duration of test (contact time):
- 5 d
- Remarks on result:
- not measured/tested
- Parameter:
- BOD5
- Value:
- 38 mg O2/g test mat.
- Results with reference substance:
- The BOD5 of glucose-glutamic acid is 180-185 180 mg O2/l
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The BOD5 of the test substance, corrected by the blank control, is 38 mg O2/g.
- Executive summary:
The BOD5 of DMPPA_701-402-5 was assessed in a study performed in accordance with the ISO 5815 Second Edition 1989-08-01 (E). Based on the findings, the BOD5 of the test substance, corrected by the blank control, is 38 mg O2/g.
Based on the results of the corresponding COD test the resulting BOD5/COD quotient is 0.03 which indicates that almost no biodegradation is likely to happen.
- Endpoint:
- biodegradation in water: ready biodegradability
- Remarks:
- Chemical Oxygen Demand
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1992
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- None
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.9 (Biodegradation: Zahn-Wellens Test)
- GLP compliance:
- yes
- Specific details on test material used for the study:
- Test substance: DMPPA_701-402-5
Stability: guaranteed by the sponsor
Storage: room temperature
Appearance:liquid - Oxygen conditions:
- other: not required as COD is being determined
- Inoculum or test system:
- other: not required as COD is being determined
- Details on inoculum:
- None
- Duration of test (contact time):
- 2 h
- Initial conc.:
- 2.5 other: mg
- Based on:
- test mat.
- Reference substance:
- other: Potassium hydrogen phthalate (Merck No.4876)
- Preliminary study:
- None
- Test performance:
- None
- Remarks on result:
- not measured/tested
- Key result
- Parameter:
- COD
- Value:
- 1 103 mg O2/g test mat.
- Results with reference substance:
- The COD of the reference substance Potassium hydrogen phthaiate is 199 mg O2/g test mat.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The COD of the test substance DMPPA_701-402-5 is 1103 mg O2/g.
- Executive summary:
A study was performed to determine the chemical oxygen demand of DMPPA_701-402-5 according EEC Directive 84/449 (1984), Part. C.9 according to DEV H 41-1 Deutsche Einheitsverfahren, 1980. The COD of a test substance is calculated from the amount of the unreacted K2Cr2O7 (Merck No.4476), determinated by a titration with (NH4)Fe(SO4)2.6H2O. Based on the findings, the COD of DMPPA_701-402-5 is 1103 mg O2/g. Based on the results of the corresponding BOD test the resulting BOD5/COD quotient is 0.03 which indicates that almost no biodegradation is likely to happen.
Referenceopen allclose all
Description of key information
The biodegradability of DMPPA_701-402-5 was assessed in studies evaluating BOD5, COD and inherent biodegradability. The BOD5 of DMPPA_701-402-5 was 38 mg O2/g, while COD was 1103 mg O2/g. Hence the BOD5/COD ratio was 0.03 (<0.5), indicating DMPPA_701-402-5 is not readily biodegradable. Two inherent biodegradability studies are available showing potential biodegradation (20-30 %), hence it can be said to fulfil the primary inherent biodegradability criteria. DMPPA_701-402-5 should not be considered as readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable, not fulfilling specific criteria
- Type of water:
- freshwater
Additional information
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