Registration Dossier

Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

Administrative data

Endpoint:
biodegradation in water and sediment: simulation tests
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Estimated using method recommended in REACH Guidance.

Data source

Reference
Reference Type:
other: software program
Title:
BIOWIN v4.10 Module of EPI v3.20
Author:
anonymous
Year:
2009
Bibliographic source:
U.S. Environmental Protection Agency

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Estimated.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Radiolabelling:
no

Study design

Oxygen conditions:
other: not applicable
Inoculum or test system:
other: not applicable
Duration of test (contact time):
28 d

Results and discussion

% Degradation
Remarks on result:
other: see below
Half-life of parent compound / 50% disappearance time (DT50)
Remarks on result:
other: see below
Transformation products:
no
Details on transformation products:
see below

Any other information on results incl. tables

see below

Applicant's summary and conclusion

Validity criteria fulfilled:
not applicable
Conclusions:
Not expected to biodegrade fast.
Executive summary:

TBPA is not expected to be readily biodegradable. This prediction is consistent with the lack of evidence for biodegradation seen in a soil study. TBPA is expected to undergo rapid hydrolysis to TBPA-acid, which is not expected to biodegrade fast.