Registration Dossier
Registration Dossier
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EC number: 611-821-4 | CAS number: 5934-29-2
Short-term toxicity to aquatic invertebrates
Administrative data
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- (Q)SAR
- Remarks:
- EPIWEB V4.1
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
- Justification for type of information:
- Please refer to QPRF/QMRF documentation for detailed information on model suitability
Data source
Referenceopen allclose all
- Reference Type:
- other: computer model
- Title:
- ECOSAR v1.11
- Author:
- US Environmental Protection Agency's Office of Chemical Safety and Pollution Prevention
- Year:
- 2 017
- Bibliographic source:
- https://www.epa.gov/tsca-screening-tools/ecological-structure-activity-relationships-ecosar-predictive-model
- Reference Type:
- other: Estimation software
- Title:
- Estimation Programs Interface Suite for Microsoft Windows, v4.11
- Author:
- US EPA
- Year:
- 2 012
- Bibliographic source:
- United States Environmental Protection Agency, Washington DC, USA; November 2012
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: REACH guidance on information requirements and chemical safety assessment Chapter R.6: QSARs and grouping of chemicals
- Version / remarks:
- May 2018
- Principles of method if other than guideline:
- QSAR prediction using ECOSAR v1.11.
- GLP compliance:
- no
Test material
- Reference substance name:
- L-Histidine Hydrochloride Monohydrate
- EC Number:
- 611-821-4
- Cas Number:
- 5934-29-2
- Molecular formula:
- C6-H9-N3-O2.Cl-H.H2-O
- IUPAC Name:
- L-Histidine Hydrochloride Monohydrate
- Test material form:
- solid: crystalline
- Details on test material:
- - Name: L-Histidine Hydrochloride Monohydrate (HHM)
- Appearance: White crystals or crystalline powder
- Batch: P817T011
- CAS no.: 5934-29-2
- Purity/Composition: 100.1%
- Molecular weight: 209.63 g/mol
- Test item storage: room temperature
- Expiry date: 31 October 2020
Constituent 1
- Specific details on test material used for the study:
- SMILES : O=C(O)C(N)Cc(ncn1)c1
Sampling and analysis
- Analytical monitoring:
- no
Test organisms
- Test organisms (species):
- Daphnia magna
Study design
- Total exposure duration:
- 48 h
Results and discussion
Effect concentrationsopen allclose all
- Key result
- Duration:
- 48 h
- Dose descriptor:
- LC50
- Effect conc.:
- 51 842 mg/L
- Nominal / measured:
- estimated
- Conc. based on:
- other: aliphatic amines group
- Basis for effect:
- mortality
- Key result
- Duration:
- 48 h
- Dose descriptor:
- LC50
- Effect conc.:
- 1 784 mg/L
- Nominal / measured:
- estimated
- Conc. based on:
- other: imidazoles group
- Basis for effect:
- mortality
- Details on results:
- see QPRF/QMRF
Applicant's summary and conclusion
- Conclusions:
- EpiWeb V4.1 predicted for the acid form of the molecule CAS# 71-00-1; 48hr EC50 for Daphnids = 51842 mg/L for aliphatic amines and 1784 mg/L for imidazoles.
- Executive summary:
EpiWeb V4.1 predicted for the acid form of the molecule CAS# 71-00-1; 48hr EC50 for Daphnids = 51842 mg/L for aliphatic amines and 1784 mg/L for imidazoles.
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