Registration Dossier
Registration Dossier
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EC number: 253-153-2 | CAS number: 36673-16-2
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:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Remarks:
- Assessment of organic components found in hydrolysis breakdown products
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Deviations:
- yes
- Remarks:
- Assessment of ready biodegradation of organic components. Assessed substances were: triethanolamine, 2-propanol and propylene glycol.
- Principles of method if other than guideline:
- Assessment of ready biodegradation of organic components. Assessed substances were: triethanolamine, 2-propanol and propylene glycol.
- GLP compliance:
- no
- Remarks:
- Assessment of ready biodegradation of organic components
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: Assessment of ready biodegradation of organic components
- Preliminary study:
- Not specified.
- Test performance:
- Not specified.
- Key result
- Parameter:
- % degradation (CO2 evolution)
- Value:
- > 60
- Sampling time:
- 6 d
- Validity criteria fulfilled:
- not applicable
- Interpretation of results:
- other: Organic components readily biodegradable
- Conclusions:
- Organic components released on abiotic degradation in diute solutions will be readily biodegradable
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- CO2 evolution test
- GLP compliance:
- not specified
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: Mixed liquor activated sludge (secondary effluent)
- Duration of test (contact time):
- ca. 5 d
- Initial conc.:
- ca. 0.6 mg/L
- Based on:
- test mat.
- Initial conc.:
- ca. 5.7 mg/L
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Key result
- Parameter:
- % degradation (test mat. analysis)
- Value:
- ca. 10 000
- Sampling time:
- 5 d
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Rapidly biodegradable according to GHS.
Referenceopen allclose all
Description of key information
The substance is unstable in water under dilute conditions and testing has shown that degradation in water will take no more than 30 minutes. Stabilised concentrates in emulsion paints will be stable for longer periods.
The recorded degradation products are titanium dioxide, propan-2-ol, triethanolamine. The organic products are known to biodegrade readily.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
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