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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
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EC number: - | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
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
- Study period:
- 10-mar-2009 to 19-mar-2009
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The study has been performed according to OECD and/or EC guidelines and according to GLP principles.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2010
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- ISO 6341 (Water quality - Determination of the Inhibition of the Mobility of Daphnia magna Straus (Cladocera, Crustacea))
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: Guidance document on aquatic toxicity testing of difficult substances and mixtures, OECD series on testing and assessment number 23, December 14, 2000
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
- Details on test material:
- - Substance type: Bright yellow powder
- Physical state: Solid
- Stability under test conditions: Unknown
- Storage condition of test material: At room temperature in the dark
Sampling and analysis
- Analytical monitoring:
- yes
- Details on sampling:
- - Concentrations: all test concentrations and the control
- Sampling method:
Frequency at t=0 h and t=48 h
Volume 1 ml from the approximate centre of the test vessels
- Sample storage conditions before analysis: Samples were stored in a freezer until analysis
Test solutions
- Vehicle:
- no
- Details on test solutions:
- PREPARATION AND APPLICATION OF TEST SOLUTION (especially for difficult test substances)
- Method: Preparation of test solutions started with a loading rate of 100 mg/l applying 1 day of magnetic stirring to reach maximum solubility of the test substance in the test medium. The resulting aqueous mixture was filtered through a membrane filter (Whatman, 0.45 µm) where after the filtrate was used as the highest test concentration. Lower test concentrations were prepared by subsequent dilutions of the filtrate in test medium. The final test solutions were all clear and colourless.
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Common name: Daphnia magna
- Source: In-house laboratory culture
- Age at study initiation (mean and range, SD): < 24 hours
- Method of breeding: With newborn daphnids, i.e. less than 3 days old, by placing about 250 of them into 5 litres of medium in an all-glass culture vessel
- Feeding during test: No
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 48 h
- Post exposure observation period:
- None.
Test conditions
- Hardness:
- 180 mg/l expressed as CaCO3
- Test temperature:
- 20.0 - 20.9 °C
- pH:
- At t=0 h: 7.9
At t=48 h: 8.0 - 8.1 - Dissolved oxygen:
- At t=0 h: 8.8 - 9.2
At t=48 h: 9.0 - Salinity:
- Not applicable.
- Nominal and measured concentrations:
- Nominal concentrations; 0.10, 1.0, 10 and 100% of a filtered solution prepared at a loading rate of 100 mg/l
Measured concentrations:
Analytical results showed that the actual test concentrations were below the limit of quantification, i.e. below 0.05 mg/l, from the start of the test. Therefore, these results indicated that medium solubility was below 0.05 mg/l. Analysis of the filter residue showed that Custom Yellow #2 was used for the preparation of test concentrations. - Details on test conditions:
- TEST SYSTEM
- Test vessel: 100 ml, all glass
- Type (delete if not applicable): open - ~80 ml, normal headspace
- Aeration: no
- No. of organisms per vessel: 5
- No. of vessels per concentration (replicates): 4 for the highest concentration, 2 in the lower test concentrations
- No. of vessels per control (replicates): 4
TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water: Adjusted ISO medium
- Culture medium different from test medium: yes, for culturing M7 medium is used
OTHER TEST CONDITIONS
- Photoperiod: 16 hours photoperiod daily
EFFECT PARAMETERS MEASURED (with observation intervals if applicable) : EC50 daily - Reference substance (positive control):
- yes
- Remarks:
- potassium dichromate (K2Cr2O7)
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 0.05 mg/L
- Nominal / measured:
- estimated
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other: EC50 > water solubility
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 0.05 mg/L
- Nominal / measured:
- estimated
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other: NOEC = water solubility
- Details on results:
- - Behavioural abnormalities: no
- Mortality of control: no
- Other adverse effects control: not observed - Results with reference substance (positive control):
- - Results with reference substance valid? yes
- EC50/LC50:
The 24h-EC50 was 0.55 mg/l with a 95% confidence interval between 0.50 and 0.63 mg/l.
The 48h-EC50 was 0.30 mg/l with a 95% confidence interval between 0.25 and 0.35 mg/l.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- Due to the very low solubility of Custom Yellow #2 in test medium, concentration levels that might be toxic for daphnids could not be reached.
The 48h-EC50 was above 0.05 mg/l, which was the limit of quantification. The NOEC was 0.05 mg/l.
In conclusion: Custom Yellow #2 is not considered to be ecotoxic based on the maximum soluble concentration and the absence of effects at this concentration.
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.
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