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Diss Factsheets
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EC number: 201-219-6 | CAS number: 79-69-6
- 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: in vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 979
- Report date:
- 1979
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
- Deviations:
- yes
- Remarks:
- non-GLP study; no data about purity and no certificate of analysis of the test substance; no details on housing conditions of animals; observations not followed until the reversibility of the effects; different scoring system was followed in the study
- GLP compliance:
- no
- Remarks:
- pre-GLP
Test material
- Reference substance name:
- Ionone
- EC Number:
- 232-396-8
- EC Name:
- Ionone
- Cas Number:
- 8013-90-9
- Molecular formula:
- C13H20O
- IUPAC Name:
- 4-(2,6,6-trimethylcyclohex-1-en-1-yl)but-3-en-2-one
1
- Specific details on test material used for the study:
- Ionone
Test animals
- Species:
- rabbit
- Strain:
- New Zealand White
- Details on test animals or test system and environmental conditions:
- - Age at study initiation: 9-12 weeks
Test system
- Type of coverage:
- semiocclusive
- Preparation of test site:
- clipped
- Vehicle:
- unchanged (no vehicle)
- Controls:
- not required
- Amount / concentration applied:
- TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.5 mL
- Concentration (if solution): 100 % - Duration of treatment / exposure:
- 4 hours
- Observation period:
- 72 hours
- Number of animals:
- Eight
- Details on study design:
- - Area of exposure: Dorsum
- % coverage: Test substance (0.5 mL) was applied under a semi-occlusive patch to the clipped skin and the patches were held in place with an adhesive tape.
- Type of wrap used: Animals were immobilised in a canvas body sleeve for 4 h after application of the patch.
REMOVAL OF TEST SUBSTANCE
- After the removal of the patches, the application site was wiped clean of excess material.
SCORING SYSTEM: Skin reactions were observed immediately after removal of the patch and after 24, 48 and 72 h and graded according to the following 8-point anchored ordinate scale:
1 = marginal / very slight
2 = slight
3 = fairly distinct
4 = quite distinct
6 = becoming well developed
8 = well developed
10 = becoming severe
12 = severe
Results and discussion
In vivo
Resultsopen allclose all
- Irritation parameter:
- erythema score
- Basis:
- mean
- Time point:
- 24/48/72 h
- Score:
- 2
- Max. score:
- 12
- Reversibility:
- not specified
- Irritation parameter:
- edema score
- Basis:
- mean
- Time point:
- 24/48/72 h
- Score:
- 2
- Max. score:
- 12
- Reversibility:
- not specified
- Irritant / corrosive response data:
- A single treatment of Ionone perfumery material produced a slight/moderate effect 24 hours after treatment. The level of reaction subsided to a generally slight reaction 72 hours after treatment. The response was significantly greater than that produced by Diethyl Phthalate which showed no response after 72 hours and consistently less than that produced by Cyclamen Aldehyde and Geraniol which produced a gernerally moderate reaction.
Any other information on results incl. tables
Reaction grades and scores:
1 = marginal / very slight
2 = slight
3 = fairly distinct
4 = quite distinct
6 = becoming well developed
8 = well developed
10 = becoming severe
12 = severe
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- Under the conditions of this test Ionone produced slight/moderate skin irritation. It was somewhat less effect than two widely used perfumery ingredients which are routinely used as standard markers in this type of test.
Ionone would not be expected to cause undue skin irritation during normal factory handling.
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