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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

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:
other: Guideline study, non-GLP, limitations in reporting but otherwise adequate for assessment.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1990
Report date:
1990

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
(2E)-3-(5,5-dimethyl-1,3-dioxan-2-yl)-2-methylprop-2-enal
EC Number:
610-698-4
Cas Number:
51575-61-2
Molecular formula:
C10 H16 O3
IUPAC Name:
(2E)-3-(5,5-dimethyl-1,3-dioxan-2-yl)-2-methylprop-2-enal
Details on test material:
- Name of test material (as cited in study report): MBDA

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, non-adapted
Details on inoculum:
Source: municipal wastewater treatment plant
Duration of test (contact time):
28 d
Initial test substance concentrationopen allclose all
Initial conc.:
31 mg/L
Based on:
test mat.
Initial conc.:
20 mg/L
Based on:
DOC
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
DOC removal
Reference substance
Reference substance:
benzoic acid, sodium salt

Results and discussion

% Degradation
Parameter:
% degradation (DOC removal)
Value:
20 - 30
Sampling time:
28 d
Details on results:
Substance is not considered readily biodegradable.

Applicant's summary and conclusion