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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study in compliance with GLP-criteria.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002
Report date:
2002

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
Ethyl trans-(±)-2-(dimethylamino)-1-phenylcyclohex-3-ene-1-carboxylate hydrochloride
EC Number:
248-226-0
EC Name:
Ethyl trans-(±)-2-(dimethylamino)-1-phenylcyclohex-3-ene-1-carboxylate hydrochloride
Cas Number:
27107-79-5
IUPAC Name:
27107-79-5
Details on test material:
- Substance name: Trans-Tilidin-HCl-Hemihydrate (Ethyl trans-(+/-)-2-(dimethylamino)-1-phenylcyclohex-3-ene-1-carboxylate hydrochloride)
- Aggregation state: solid, powder
- Colour: white
- Homogeneity: homogeneous
- Storage conditions: storage at room temperature under nitrogen and light exclusion.

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic (adaptation not specified)
Details on inoculum:
Activated sludge from laboratory waste water plants fed with municipal sewage. Concentration of dry substance 30 mg/L.
Duration of test (contact time):
28 d
Initial test substance concentrationopen allclose all
Initial conc.:
20 mg/L
Based on:
DOC
Initial conc.:
32 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
DOC removal
Reference substance
Reference substance:
aniline

Results and discussion

Test performance:
- Degradation degree in the inhibition control after 14 days (% DOC): 40-50
- Physico-chemical (abiotic) elimination of the test substance (% DOC): <10 at the end of the test
- Elimination of the test substance by adsorption (% DOC): <10 after 5 days
% Degradation
Parameter:
% degradation (DOC removal)
Value:
< 10
Sampling time:
28 d

BOD5 / COD results

Results with reference substance:
Degradation degree of the reference substance after 14 days (% DOC): 90-100

Applicant's summary and conclusion