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Environmental fate & pathways

Biodegradation in water: screening tests

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Reference
Endpoint:
biodegradation in water: ready biodegradability
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Assessment of organic components found in hydrolysis breakdown products
Justification for type of information:
Read across valid as the substnace tested is also titanate complex with glycol and alkylamine, degrading in water to similar degradation products.
Reference:
Composition 0
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
Deviations:
yes
Remarks:
Differenct methods used
Principles of method if other than guideline:
Assessment of ready biodegradation of organic components
GLP compliance:
no
Remarks:
Assessment based on expert judgement
Test material information:
Composition 1
Key result
Parameter:
% degradation (CO2 evolution)
Value:
> 60
Remarks on result:
other: Based on several published studies.
Details on results:
Rapid biodegradation reported for the three assessed degradation products, all classed as ' readily biodegradable'.
Validity criteria fulfilled:
not applicable
Interpretation of results:
readily biodegradable
Conclusions:
Organic hydrolysis products released on abiotic degradation in dilute solution will be readily biodegradable.

Description of key information

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The substance contains titanium and on dilution in water, this will form titanium dioxide which is not biodegradable. Therefore, the approach taken is to assess the substances found to be released in diluted environmental conditions and each of these three organic components were assessed as readily biodegradable.