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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
experimental study
Adequacy of study:
other information
Study period:
From 2007-Jul-12 to 2007-Aug-24
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report date:
2007

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
GLP compliance:
yes (incl. QA statement)

Test material

Specific details on test material used for the study:
Batch No.: DEBP007164
Purity: 99.3 % [w/w]
AZ-272-V1

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
sewage, predominantly domestic, non-adapted
Duration of test (contact time):
42 d
Initial test substance concentration
Initial conc.:
20 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
CO2 evolution

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (CO2 evolution)
Value:
8
Sampling time:
14 d
Parameter:
% degradation (CO2 evolution)
Value:
40
Sampling time:
28 d

Any other information on results incl. tables

 Time (days)

 6

 14

 21  28  35  42
 1st replicate  0 8 28   39 47  48
 2st replicate  0 8  27  40  58  72

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
not readily biodegradable
Conclusions:
The test item must be regarded as not readily biodegradable in the 10-d-window and after 28 days but as biodegradable after 42 days.