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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: GLP complicance, not OECD guideline

Data source

Reference
Reference Type:
other: inquiry result from ECHA
Title:
Unnamed
Year:
2014

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: 92/69/EWG, C.2
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
1-(2-hydroxyethyl)-1H-pyrazol-4,5-diyldiammoniumsulfate
EC Number:
429-300-3
EC Name:
1-(2-hydroxyethyl)-1H-pyrazol-4,5-diyldiammoniumsulfate
Cas Number:
155601-30-2
Molecular formula:
C5H12N4O5S
IUPAC Name:
1-(2-hydroxyethyl)-1H-pyrazol-4,5-diyldiammoniumsulfate
Details on test material:
Identity and concentration of auxiliary solvent for dispersal: None

Test organisms

Test organisms (species):
other aquatic crustacea: DM

Test conditions

Hardness:
251 mg CaCO3/L

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
30.01 mg/L
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
11.12 mg/L
Duration:
48 h
Dose descriptor:
EC100
Effect conc.:
> 56.52 mg/L
Duration:
48 h
Dose descriptor:
NOEC
Effect conc.:
< 6.14 mg/L
Details on results:
%Concentration loss over test: 27.4 ... 47.1

Applicant's summary and conclusion