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EC number: 269-648-1 | CAS number: 68308-36-1 Meal resulting from solvent extraction of oil from soybeans.
Biodegradation in water: screening tests
Administrative data
- 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
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Soybean meal
- EC Number:
- 269-648-1
- EC Name:
- Soybean meal
- Cas Number:
- 68308-36-1
- IUPAC Name:
- 3-(4-hydroxyphenyl)-7-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-4H-chromen-4-one; 3-oxo-3-{[(2R,3S,4S,5R,6S)-3,4,5-trihydroxy-6-{[3-(4-hydroxyphenyl)-4-oxo-4H-chromen-7-yl]oxy}oxan-2-yl]methoxy}propanoic acid; 5,7-dihydroxy-3-(4-hydroxyphenyl)-4H-chromen-4-one; 5-hydroxy-3-(4-hydroxyphenyl)-7-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-4H-chromen-4-one; 7-hydroxy-3-(4-hydroxyphenyl)-4H-chromen-4-one
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Duration of test (contact time):
- <= 28 d
Initial test substance concentration
- Initial conc.:
- 103.1 mg/L
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradationopen allclose all
- Key result
- Parameter:
- % degradation (O2 consumption)
- Remarks:
- based on ThOD(NO3)
- Value:
- 84
- Sampling time:
- 28 d
- Key result
- Parameter:
- % degradation (O2 consumption)
- Remarks:
- based on ThOD(NH4)
- Value:
- 104
- Sampling time:
- 28 d
- Parameter:
- % degradation (O2 consumption)
- Remarks:
- based on ThOD(NO3)
- Value:
- 71
- Sampling time:
- 11 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The degradation rate of Soybean flour reached 60% within the 10-day window and after 28 days.
Therefore, Soybean flour is considered to be readily biodegradable.
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