Registration Dossier
Registration Dossier
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EC number: 273-742-8 | CAS number: 69012-43-7 Product resulting from cleaning anodes and electrolyzing cells in an electrolytic zinc plant with zinc sulfate. Consists primarily of oxides of lead and manganese and calcium sulfate.
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: Guideline followed. Study well conducted.
Data source
Referenceopen allclose all
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: USEPA(2002) Methods for measuring the acute toxicity of effluents and receiving waters to freshwater organisms. Cincinnati, Ohio, U.S. Environmental Protection Agency
- GLP compliance:
- no
Test material
- Reference substance name:
- Lead dinitrate
- EC Number:
- 233-245-9
- EC Name:
- Lead dinitrate
- Cas Number:
- 10099-74-8
- Details on test material:
- - Name of test material (as cited in study report): Pb
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
Test solutions
- Vehicle:
- no
Test organisms
- Test organisms (species):
- Ceriodaphnia dubia
- Details on test organisms:
- - Test organisms originate from Aquatic Biosystems and maintained in dechlorinated tapwater at 26°C
- For all tests, a mass culture was started and maintained for 3 days. All mass cultures were fed with a combination of YCT and algae
- Test organisms were < 24 h old before testing
Study design
- Test type:
- semi-static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 48 h
Test conditions
- Hardness:
- 16.4 mg/L
- Test temperature:
- 25°C
- pH:
- 5.71+-0.05
- Nominal and measured concentrations:
- Nominal conc. (µg/L Pb):0, 5, 10, 20, 40, 80
Measured conc. (µg/L Pb): 0, 3, 9, 17, 36, 76 - Details on test conditions:
- 5 individuals/20 mL polyethylene cups
- 4 replicates were used for testing
Results and discussion
Effect concentrations
- Duration:
- 48 h
- Dose descriptor:
- LC50
- Effect conc.:
- 73.56 µg/L
- Nominal / measured:
- meas. (arithm. mean)
- Conc. based on:
- dissolved
- Basis for effect:
- mortality
- Remarks on result:
- other: 95%CI: (µg/L Pb2+): 45.1 - 119.1
- Reported statistics and error estimates:
- All acute tests were assessed for LC50 values using Maximum Likelihood Probit or Trimmed Spearman Karber method
Any other information on results incl. tables
Water quality parameters in micromol:
Na+: 78; Ca2 +: 106; Mg2 +: 58; K+: 55; Cl-: 408; SO42 -: 21; DOC: 50
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
