Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

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other: GLP-compliant guideline study, available as unpublished report, no restrictions, fully adequate for assessment.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2003
Report date:
2003

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
Qualifier:
according to guideline
Guideline:
EU Method C.4-C (Determination of the "Ready" Biodegradability - Carbon Dioxide Evolution Test)
Qualifier:
according to guideline
Guideline:
ISO DIS 9439 (Ultimate Aerobic Biodegradability - Method by Analysis of Released Carbon Dioxide)
GLP compliance:
yes (incl. QA statement)
Remarks:
Experimental Toxicology and Ecology, BASF Aktiengesellschaft, 67056 Ludwigshafen/Rhein, Germany

Test material

Constituent 1
Reference substance name:
297132-04-8
EC Number:
608-403-9
Cas Number:
297132-04-8
IUPAC Name:
297132-04-8
Details on test material:
- Name of test substance: 4-(4-Acryloyloxy-butoxycarbonyloxy)-benzoic acid
- Aggregate state/colour: solid / white
- Homogeneity: homogeneous
- Storage conditions: Store at room temperature under light exclusion. Keep dry

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, non-adapted
Details on inoculum:
- Concentration of sludge in the test assay: 30 mg/L (dry substance).
- Pre-aerated for about two days before the start of the test.
Duration of test (contact time):
28 d
Initial test substance concentrationopen allclose all
Initial conc.:
35 mg/L
Based on:
test mat.
Initial conc.:
20 mg/L
Based on:
other: TOC
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
CO2 evolution
Details on study design:
- pH: 7.7 before correction, 7.4 after correction
- pH adjusted: no
Reference substance
Reference substance:
aniline

Results and discussion

% Degradation
Parameter:
% degradation (CO2 evolution)
Value:
89
Sampling time:
28 d

BOD5 / COD results

Results with reference substance:
86% within 28 days

Any other information on results incl. tables

Test concentration is equivalent to 20 mg/L TOC. Since the test substance  is poorly soluble in water, no DOC degradation was determined.

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable