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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Non-GLP-guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1992
Report date:
1992

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:
[(2E)-3-(5,5-dimethyl-1,3-dioxan-2-yl)-2-butenyl]triphenylphosphonium chloride
EC Number:
613-004-8
Cas Number:
62285-89-6
Molecular formula:
C28 H32 O2 P . Cl
IUPAC Name:
[(2E)-3-(5,5-dimethyl-1,3-dioxan-2-yl)-2-butenyl]triphenylphosphonium chloride
Details on test material:
- Name of test material (as cited in study report): C5-NPG-Acetal
- Analytical purity: not stated

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no
Details on test solutions:
PREPARATION AND APPLICATION OF TEST SOLUTION (especially for difficult test substances)
- Method: A stock solution was prepared (2 g/l)

Test organisms

Test organisms (species):
activated sludge, domestic
Details on inoculum:
- Initial biomass concentration: 1 g/l dw

Study design

Total exposure duration:
30 min

Test conditions

Nominal and measured concentrations:
Nominal test concentrations (mg/l):
1,
4,
8,
10,
100,
400,
1000,
control
Reference substance (positive control):
yes
Remarks:
3,5 Dichlorphenole

Results and discussion

Effect concentrationsopen allclose all
Duration:
30 min
Dose descriptor:
other: EC20
Effect conc.:
ca. 5 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration
Remarks:
respiration rate
Duration:
30 min
Dose descriptor:
EC50
Effect conc.:
ca. 150 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration
Remarks:
respiration rate
Results with reference substance (positive control):
EC20 ca.6 mg/l,
EC50 ca.45 mg/l,
EC80 ca.250 mg/l

Applicant's summary and conclusion