Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
toxicity to microorganisms
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)

Data source

Reference
Reference Type:
publication
Title:
Environmental fate and effects of ethylene oxide.
Author:
CONWAY, R.A., WAGGY, G.T., SPIEGEL, M.H., & BERGLUND, R.L
Year:
1983
Bibliographic source:
Environ. Sci. Technol., 17: 107-112

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 224 (Determination of the Inhibition of the Activity of Anaerobic Bacteria – Reduction of Gas Production from Anaerobically Digesting (Sewage) Sludge)
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Ethylene oxide
EC Number:
200-849-9
EC Name:
Ethylene oxide
Cas Number:
75-21-8
Molecular formula:
C2H4O
IUPAC Name:
oxirane

Test organisms

Test organisms (species):
activated sludge

Study design

Test type:
static
Water media type:
not specified
Total exposure duration:
16 h

Test conditions

Test temperature:
22

Results and discussion

Effect concentrations
Duration:
16 h
Dose descriptor:
other: 50% growth inhibition
Effect conc.:
> 10 - < 100 mg/L
Conc. based on:
test mat.

Applicant's summary and conclusion