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EC number: 807-747-9 | CAS number: 144429-84-5
- 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 sensitisation
Administrative data
- Endpoint:
- skin sensitisation: in vivo (non-LLNA)
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- 13.REPORTING FORMAT FOR THE ANALOGUE APPROACH
1. HYPOTHESIS FOR THE ANALOGUE APPROACH
Please refer to Read-Across Justification Document in chapter 13.
2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
Please refer to Read-Across Justification Document in chapter 13.
3. ANALOGUE APPROACH JUSTIFICATION
Please refer to Read-Across Justification Document in chapter 13.
4. DATA MATRIX
Please refer to Read-Across Justification Document in chapter 13.
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- read-across source
Reference
- Endpoint:
- skin sensitisation: in vivo (non-LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- July 03rd 1989, August 03rd 1989
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 406 (Skin Sensitisation)
- Version / remarks:
- 1981
- Deviations:
- no
- GLP compliance:
- yes
- Type of study:
- guinea pig maximisation test
- Justification for non-LLNA method:
- The study was conducted in 1989 when the GPMT was an internationally accepted and recommended method.
- Specific details on test material used for the study:
- STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: at room temperature - Species:
- guinea pig
- Strain:
- Dunkin-Hartley
- Sex:
- male/female
- Details on test animals and environmental conditions:
- TEST ANIMALS
- Animal strain as given in the report: Pirbright White Strain (Tif: DHP)
- Source: CIBA-GEIGY Limited, Tierfarm, 4332 Stein / Switzerland
- Age at study initiation: approx. 10 weeks old
- Weight at study initiation: 336 to 446 g
- Housing: individually in Macrolon cages (Type 3)
- Diet: standard guinea pig pellets - NAFAG No. 845, Gossau SG, ad libitum
- Water: fresh water, ad libitum
ENVIRONMENTAL CONDITIONS
- Temperature: 22+3°C
- Humidity: 30 to 70 %
- Photoperiod (hrs dark / hrs light): 12 hours light cycle day
All batches of the diet are assayed for nutritive ingredients and contamination level by the manufacturer. Analytical results are available at the animal supply office. The drinking water is examined periodically by the IWB (Industrielle Werke Basel). - Route:
- intradermal
- Vehicle:
- other: sesame oil
- Concentration / amount:
- 10 %
- Day(s)/duration:
- day 0
- Route:
- epicutaneous, occlusive
- Vehicle:
- petrolatum
- Concentration / amount:
- 10 %
- Day(s)/duration:
- day 7 / 48 h
- Route:
- epicutaneous, occlusive
- Vehicle:
- petrolatum
- Concentration / amount:
- 10 %
- Day(s)/duration:
- day 21 / 24 h
- No. of animals per dose:
- 10 male and 10 female guinea pigs per group
- Details on study design:
- The following concentrations have been examined on separate animals for the evaluation of the primary irritant potential and the maximum subirritant concentration: 30 and 10 % in vaseline.
Erythema reactions were observed with 30% in vaseline. 30% was, therefore, selected for the epidermal induction application and 10% as maximum subirritant concentration for the epidermal challenge application.
The induction was a two-stage operation. First, intradermal injections (into the neck region); second, closed patch exposure over the injection sites one week later.
First Induction, intradermal application
Three pairs of intradermal injections (0.1 mL per injection) were made simultaneously into the shaved neck of the guinea pigs as follows:
- adjuvant/saline mixture 1:1 (v/v)
- test article in sesame oil (w/v)
- test article in the adjuvant saline mixture (w/v)
Second Induction, epidermal application
One week later the test article was incorporated in vaseline (w/w) and applied on a filterpaper patch to the neck of the animals (patch 2x4 cm; approx. 0.4 g paste per patch; occluded administration for 48 hours).
Challenge
Two weeks after the epidermal induction application the animals were tested on the flank with test material in vaseline (w/w) and the vehicle alone (patch 2x2 cm; approx. 0.2 g paste per patch; occluded administration for 24 hours).
Twenty four hours after removing the dressings, the challenge reactions were graded according to the Draize scoring scale. A second evaluation was made 48 hours after removing the dressings. The sensitising potential of the test item was classified according to the grading of Magnusson and Kligman. The body weight was recorded at start and end of the test.
Observations and records
Induction reactions
After the intradermal and the epidermal induction application irritant reactions are normally induced by the adjuvant, the high test article concentration, or the sodium lauryl sulfate pretreatment. Because most of the reactions are treatment related and not compound related, the reactions are only described in special cases in the section of results.
Challenge reactions
Twenty four hours after removing the dressings, the challenge reactions were graded according to the Draize scoring scale. A second evaluation was made 48 hours after removing the dressings.
The sensitising potential of the test item was classified according to the grading of Magnusson and Kligman. The body weight was recorded at start and end of the test. - Challenge controls:
- A control group was treated with adjuvant and the vehicle during the induction period. During the challenge period the group was treated with the vehicle as well as with the test article (at least 10 animals) to check the maximum subirritant concentration of the test article in adjuvant treated animals.
- Positive control substance(s):
- no
- Key result
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 10%
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- none
- Key result
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 10%
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- none
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- In the GPMT, none of the guinea pigs of the test group showed skin reactions 24 and 48 hours after challenge with 10% test item.
- Reason / purpose for cross-reference:
- read-across: supporting information
Reference
- Endpoint:
- skin sensitisation: in vivo (non-LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- August 25 to September 25, 1987
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 406 (Skin Sensitisation)
- Version / remarks:
- 1981
- Deviations:
- no
- GLP compliance:
- yes
- Type of study:
- guinea pig maximisation test
- Justification for non-LLNA method:
- The study was conducted in 1987 when the GPMT was an internationally accepted and recommended method.
- Specific details on test material used for the study:
- STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: room temperature - Species:
- guinea pig
- Strain:
- Dunkin-Hartley
- Sex:
- male/female
- Details on test animals and environmental conditions:
- TEST ANIMALS
- Animal strain as given in the report: Pirbright White Strain (Tif: DHP)
- Source: CIBA-GEIGY Limited, Tierfarm, 4332 Stein / Switzerland
- Age at study initiation: approx. 10 weeks old
- Weight at study initiation: 336 to 462 g
- Housing: individually in Macrolon cages (Type 3)
- Diet: standard guinea pig pellets - NAFAG No. 846, Gossau SG, ad libitum
- Water: fresh water, ad libitum
ENVIRONMENTAL CONDITIONS
- Temperature: 22+3°C
- Humidity: 30 to 70 %
- Photoperiod: 12 hours light cycle day
All batches of the diet are assayed for nutritive ingredients and contamination level by the manufacturer. Analytical results are available at the animal supply office. The drinking water is examined periodically by the IWB (Industrielle Werke Basel). - Route:
- intradermal
- Vehicle:
- other: sesame oil
- Concentration / amount:
- 3 %
- Day(s)/duration:
- day 0
- Route:
- epicutaneous, occlusive
- Vehicle:
- petrolatum
- Concentration / amount:
- 3 %
- Day(s)/duration:
- day 7
- No.:
- #1
- Route:
- epicutaneous, occlusive
- Vehicle:
- petrolatum
- Concentration / amount:
- 3 %
- Day(s)/duration:
- day 21 / 24 h
- No. of animals per dose:
- 10 male and 10 female guinea pigs per group
- Details on study design:
- The following concentrations have been examined on separate animals for the evaluation of the primary irritant potential and the maximum subirritant concentration: 30, 10, 3 and 1% in vaseline.
Erythema reactions were observed with 10 and 30% in vaseline. 30% was, therefore, selected for the epidermal induction application and 3% as maximum subirritant concentration for the epidermal challenge application.
The induction was a two-stage operation. First, intradermal injections (into the neck region); second, closed patch exposure over the injection sites one week later.
First Induction, intradermal application
Three pairs of intradermal injections (0.1 mL per injection) were made simultaneously into the shaved neck of the guinea pigs as follows:
- adjuvant/saline mixture 1:1 (v/v)
- test article in sesame oil (w/v)
- test article in the adjuvant saline mixture (w/v)
Second Induction, epidermal application
One week later the test item was incorporated in vaseline (w/w) and applied on a filterpaper patch to the neck of the animals (patch 2x4 cm; approx. 0.4 g paste per patch; occluded administration for 48 hours).
Challenge
Two weeks after the epidermal induction application the animals were tested on the flank with test material in vaseline (w/w) and the vehicle alone (patch 2x2 cm; approx. 0.2 g paste per patch; occluded administration for 24 hours).
Twenty four hours after removing the dressings, the challenge reactions were graded according to the Draize scoring scale. A second evaluation was made 48 hours after removing the dressings. The sensitising potential of the test item was classified according to the grading of Magnusson and Kligman. The body weight was recorded at start and end of the test.
Observations and records
Induction reactions
After the intradermal and the epidermal induction application irritant reactions are normally induced by the adjuvant, the high test article concentration, or the sodium lauryl sulfate pretreatment. Because most of the reactions are treatment related and not compound related, the reactions are only described in special cases in the section of results.
Challenge reactions
Twenty four hours after removing the dressings, the challenge reactions were graded according to the Draize scoring scale. A second evaluation was made 48 hours after removing the dressings.
The sensitising potential of the test item was classified according to the grading of Magnusson and Kligman. The body weight was recorded at start and end of the test. - Challenge controls:
- A control group was treated with adjuvant and the vehicle during the induction period. During the challenge period the group was treated with the vehicle as well as with the test article (at least 10 animals) to check the maximum subirritant concentration of the test article in adjuvant treated animals.
- Positive control substance(s):
- no
- Key result
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 3%
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- none
- Key result
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 3%
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- none
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- In the GPMT, none of the guinea pigs of the test group showed skin reactions 24 and 48 hours after challenge with 3% test item.
Data source
Materials and methods
Test material
- Reference substance name:
- Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 2-ethylhexyl ester
- EC Number:
- 807-747-9
- Cas Number:
- 144429-84-5
- Molecular formula:
- C25H42O3
- IUPAC Name:
- Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 2-ethylhexyl ester
- Test material form:
- liquid
Constituent 1
Results and discussion
In vivo (non-LLNA)
Resultsopen allclose all
- Key result
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 10 %
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- none
- Remarks on result:
- other: CAS 125643-61-0
- Key result
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 10 %
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- none
- Remarks on result:
- other: CAS 125643-61-0
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.