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EC number: 436-900-9 | CAS number: 39290-90-9
- 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:
- 18 October 2000-02 May 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study has been performed according to the appropriate ISO and OECD and EC guidelines and according to GLP principles.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 001
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- ISO 6341 (Water quality - Determination of the Inhibition of the Mobility of Daphnia magna Straus (Cladocera, Crustacea))
- Version / remarks:
- (1996)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- Version / remarks:
- (1992)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Version / remarks:
- (1984)
- GLP compliance:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 436-900-9
- EC Name:
- -
- Cas Number:
- 39290-90-9
- Molecular formula:
- Hill Empirical formula: K(0.2-0.7) Mg(0.4) Ti(1.6) O(3.7-3.95) CAS Empirical formula: K(0.2-0.7) Mg(0.4) Ti(1.6) O(3.7-3.95)
- IUPAC Name:
- Magnesium Potassium Titanium Oxide
- Test material form:
- solid
- Details on test material:
- Batch: 0G99
White powder
Expiry date: 21 August 2001
Test substance storage: At room temperature in the dark
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
- Details on sampling:
- - samples for analysis were taken from the blank-control and the filtered (100% filtrate) and unfiltered (100 mg/l nominal) solutions
- Sampling method: 10 mL from the approximate centre of the test vessels
- Frequency: at the start and the end of the test (t=48 h)
- Sample storage conditions before analysis: in a deep freeze until shipment to Solvias AG, Basel, Switzerland
Test solutions
- Vehicle:
- no
- Details on test solutions:
- Supersaturated solutions were prepared at nominally 100 mg/L and magnetically stirred for three days. Two of the solutions were filtered through a paper filter to remove the larger undissolved test substance particles (ca. > 5 µm). The filtered solution was used to prepare three lower concentrations (0.1, 1 and 10%). The third solution was not filtered and used as such (100 mg/L nominal).
The unfiltered solution (100 mg/L nominal) was a turbid whitish dispersion with undissolved test substance particles.
The undiluted filtered solution (100% filtrate) was slightly turbid, while the dilutions of the filtrate were clear and colourless.
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Source: In-house laboratory culture with a known history
- Age at study initiation: < 24 hours.
- Method of breeding: With newborn daphnids, i.e. less than 3 days old, by placing about 250 of them into 10 litres of medium in an all-glass culture vessel
- Feeding during test: no feeding
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 48 h
- Post exposure observation period:
- No post exposure observations
Test conditions
- Hardness:
- 250 mg CaCO3/L
- Test temperature:
- 20.5-21.4°C
- pH:
- 8.0-9.0
- Dissolved oxygen:
- 7.4-9.3 mg/L
- Nominal and measured concentrations:
- Measured concentrations of Terracess P (calculated from the measured Titanium concentrations)
Blank control: below the limit of quantification
100% filtrate: 69912 µg/L (t=0) - 54/644 µg/L (t=48) (duplicate measurements)
100 mg/l nominal : 9677 µg/L (t=0) - 97 µg/L (t=48) - Details on test conditions:
- TEST SYSTEM
- Test vessel: 100 ml, all-glass
- Aeration: no aeration of the test solutions
- No. of organisms per vessel: 10 per vessel containing 80 ml of the solution
- No. of vessels per concentration (replicates): 2
- No. of vessels per control (replicates): 2
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
- Adjustment of pH: 8.0 ± 0.2
- Photoperiod: 16 hours daily
EFFECT PARAMETERS MEASURED (with observation intervals if applicable): immobility (including mortality) daily
TEST CONCENTRATIONS
- Spacing factor for test concentrations: 10
-Test concentrations: 0, 0.1, 1, 10 and 100% of the filtrate + 100 mg/l nominal (not filtered)
TEST:
The study was a combined limit/range finding test - Reference substance (positive control):
- yes
- Remarks:
- Potassium dichromate
Results and discussion
Effect concentrations
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 23 536 µg/L
- Nominal / measured:
- meas. (arithm. mean)
- Conc. based on:
- element
- Remarks:
- titanium
- Basis for effect:
- mobility
- Details on results:
- No immobility was observed in the control or any of the test concentrations.
- Results with reference substance (positive control):
- - Results with reference substance valid: Yes
- Mortality after 48h: 0% at 0.10 mg/L; 0% at 0.18 mg/L; 0% at 0.32 mg/L; 0% at 0.56 mg/L; 100% at 1.0 and 1.8 mg/L
- 48h-EC50 was 0.75 mg/l with a 95% confidence interval between 0.56 and 1.0 mg/L
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- Under the conditions of the test, Terracess P did not induce acute immobilisation of Dapnia magna at a loading rate of 100 mg/L after 48 h of exposure. Due to the very low solubility of Terracess P in water, concentration levels that might be toxic for daphnids could not be reached. Hence the 48 h-EC50 for Daphnia exceeded the maximum solubility of the substance in water. The EC50 exceeds 23536 ug/L based on Ti analysis that corresponds to an EC50 of 85397.84 ug Terraces P/L.
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