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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

Ecotoxicological information

Toxicity to microorganisms

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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:
other: GLP guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1994
Report date:
1994

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
5-[3-(1-ethoxyethoxy)-3-methyl-4-penten-1-ynyl]-2,4,6,6-tetramethyl-5,6,7,7a-tetrahydro-1,3-benzodioxol-5-ol
EC Number:
605-301-6
Cas Number:
162691-59-0
Molecular formula:
C21 H32 O5
IUPAC Name:
5-[3-(1-ethoxyethoxy)-3-methyl-4-penten-1-ynyl]-2,4,6,6-tetramethyl-5,6,7,7a-tetrahydro-1,3-benzodioxol-5-ol
Details on test material:
- Name of test material (as cited in study report): Asta-C 15-Acetai (Cl 5-Act)

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
activated sludge, domestic
Details on inoculum:
- Laboratory culture: activated sludge taken from a municipal waste water treatment plant.
- Initial biomass concentration: 1 g/l

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
30 min

Test conditions

Nominal and measured concentrations:
Nominal test substance concentration:
100, 500 and 1000 mg/l
Reference substance (positive control):
yes
Remarks:
3,5-Dichlorphenol

Results and discussion

Effect concentrations
Duration:
30 min
Dose descriptor:
other: EC20
Effect conc.:
600 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration
Remarks:
respiration rate

Applicant's summary and conclusion