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EC number: 236-007-2 | CAS number: 13093-17-9
- 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
Skin irritation / corrosion
Administrative data
- Endpoint:
- skin irritation / corrosion
- Remarks:
- other: Determination of pH-value and acidic reserve
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2012-06-11
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Determination of pH value and acidic reserve according to accepted scientific methods.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
- Principles of method if other than guideline:
- Electrochemic determination of pH
Determination of the acidic reserve via titration - GLP compliance:
- no
Test material
- Reference substance name:
- Cerium tetranitrate
- EC Number:
- 236-007-2
- EC Name:
- Cerium tetranitrate
- Cas Number:
- 13093-17-9
- Molecular formula:
- Ce.4HNO3
- IUPAC Name:
- cerium tetranitrate
- Test material form:
- other: liquid substance in its solvent (i.e. water), as it cannot be obtained without it
- Details on test material:
- - Name of test material (as cited in study report): Red solution
Constituent 1
Test animals
- Species:
- other: not applicable
- Strain:
- other: Not applicable
- Details on test animals or test system and environmental conditions:
- Not applicable
Test system
- Type of coverage:
- other: Not applicable
- Preparation of test site:
- other: Not applicable
- Vehicle:
- not specified
- Details on study design:
- Purpose:
The higher the buffer capacity of a mixture (solution or slurry) is, the stronger the irritating and corrosive potential is, respectively. The physiological effects of acidic or alkaline solutions are not only determined by the pH value but also by the buffering capacity. That's why it is necessary to determine the alkaline or acid reserve of identified products.
Method:
First, the pH-value of a 10% solution (or slurry) is determined electrochemically at 20°C with a calibrated pH meter (MA 235 Mettler Toledo). This value is recorded.
Determination of the acidic reserve titration:
- For the determination of the acid reserve: the titration volume (in mL) of a 1 mol/L NaOH solution, which is required to achieve a pH of 4 of a 10% solution (or slurry) at 20°C, is recorded.
Calculations:
Titration of the 10% solution/slurry
Acid reserve = titration volume [mL] x 0.4
A product is classified as corrosive if:
pH - 1/12 acid reserve <= -0.5
Results and discussion
In vivo
Results
- Remarks on result:
- other: The substance is considered to be corrosive
- Irritant / corrosive response data:
- Corrosive (based on an acidic reserve of 20 and pH of 0.68, the calculation for corrosivity was -0.987 which is lower than -0.5)
Any other information on results incl. tables
A pH value of 0.68 was determined.
Applicant's summary and conclusion
- Interpretation of results:
- other: corrosive
- Conclusions:
- The pH value was determined to be 0.68 and the acidic reserve 20. The calculation for corrosivity was -0.987. Therefore a solution containing 10% of cerium tetranitrate was considered to be corrosive.
Corrosive (based on an acidic reserve of 20 and pH of 0.68, the calculation for corrosivity was -0.987 which is lower than -0.5)
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