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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test (Carbon and Ammonium Oxidation))
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
α,α-dimethylphenethyl acetate
EC Number:
205-781-3
EC Name:
α,α-dimethylphenethyl acetate
Cas Number:
151-05-3
Molecular formula:
C12H16O2
IUPAC Name:
1,1-dimethyl-2-phenylethyl acetate
Test material form:
solid

Results and discussion

Effect concentrationsopen allclose all
Key result
Duration:
3 h
Dose descriptor:
NOEC
Effect conc.:
ca. 312.5 mg/L
Key result
Duration:
3 h
Dose descriptor:
LOEC
Effect conc.:
ca. 1 000 mg/L
Key result
Duration:
3 h
Dose descriptor:
EC50
Remarks:
total oxygen uptake
Effect conc.:
ca. 684 mg/L
Key result
Duration:
3 h
Dose descriptor:
EC50
Remarks:
heterotrophic oxygen uptake
Effect conc.:
ca. 713 mg/L
Key result
Duration:
3 h
Dose descriptor:
EC50
Remarks:
nitrification oxygen uptake
Effect conc.:
ca. 637 mg/L

Applicant's summary and conclusion