Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
toxicity to microorganisms
Type of information:
other: OECD SIDS
Adequacy of study:
key study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Data is taken from OECD SIDS.

Data source

Reference
Reference Type:
other: Internal study
Title:
Unnamed
Year:
1993
Report date:
1993

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: "Test for Inhibition of Oxygen Consumption by Activated Sludge" ISO 8192 (1986)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Triethyl phosphite
EC Number:
204-552-5
EC Name:
Triethyl phosphite
Cas Number:
122-52-1
Molecular formula:
C6H15O3P
IUPAC Name:
triethyl phosphite

Sampling and analysis

Analytical monitoring:
no

Test organisms

Test organisms (species):
activated sludge

Study design

Test type:
other: Aquatic
Total exposure duration:
3 h

Results and discussion

Effect concentrations
Duration:
3 h
Dose descriptor:
EC50
Effect conc.:
4 720 mg/L

Applicant's summary and conclusion

Conclusions:
toxicity to Microorganisms: (Activated sludge) 3 hours EC50 : 4720 mg/l
Result : EC50: aritmethic mean of the tested nominal concentrations.