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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
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:
2006
Report date:
2006

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.2 (Acute Toxicity for Daphnia)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
471-140-1
EC Name:
-
Cas Number:
121240-56-0
Molecular formula:
C16H37F2P
IUPAC Name:
hydrogen tetrabutylphosphanium difluoride

Sampling and analysis

Analytical monitoring:
yes

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Daphnia magna

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
48 h

Test conditions

Hardness:
277 mg CaCO3/L
Test temperature:
20.4 - 20.5°C
pH:
8.1
Dissolved oxygen:
8.2 - 8.3 mg/L
Reference substance (positive control):
no

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
11.67 mg/L
Nominal / measured:
nominal
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
4.04 mg/L
Nominal / measured:
nominal
Duration:
48 h
Dose descriptor:
EC100
Effect conc.:
16 mg/L
Nominal / measured:
nominal
Duration:
48 h
Dose descriptor:
NOEC
Effect conc.:
1 mg/L
Nominal / measured:
nominal

Any other information on results incl. tables

The results are expressed in terms of nominal concentrations. Recovery rates ranged from 119.2 - 172.7 % of nominal values at 0 hours, and from 119.7 - 172.7 % of nominal values at 48 hours, respectively. The high recovery of 172.7 % in the lowest concentration was determined close to the limit of quantification. It has no impact on the study result.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
NOEC (48 h): 1 mg/L