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Diss Factsheets
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EC number: 297-566-6 | CAS number: 93642-68-3
- 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
![](https://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_toxicological-information.png)
Skin sensitisation
Administrative data
- Endpoint:
- skin sensitisation: in vivo (non-LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- August - September 2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The study was conducted according to current OECD guideline and in compliance with GLP.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 014
- Report date:
- 2014
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 406 (Skin Sensitisation)
- Principles of method if other than guideline:
- The Buehler type of sensitization test was selected since the test substance is a functional silane and the Local Lymph Node Assay as preferred alternative has shown to provide false positive results for silicone substances.
- GLP compliance:
- yes (incl. QA statement)
- Type of study:
- Buehler test
Test material
- Reference substance name:
- 3-[3-(triethoxysilyl)propyl]oxolane-2,5-dione
- IUPAC Name:
- 3-[3-(triethoxysilyl)propyl]oxolane-2,5-dione
- Reference substance name:
- Dihydro-3-[3-(triethoxysilyl)propyl]furan-2,5-dione
- EC Number:
- 297-566-6
- EC Name:
- Dihydro-3-[3-(triethoxysilyl)propyl]furan-2,5-dione
- Cas Number:
- 93642-68-3
- Molecular formula:
- C13H24O6Si
- IUPAC Name:
- 3-[3-(triethoxysilyl)propyl]dihydrofuran-2,5-dione
Constituent 1
Constituent 2
In vivo test system
Test animals
- Species:
- guinea pig
- Strain:
- Dunkin-Hartley
- Sex:
- male/female
- Details on test animals and environmental conditions:
- TEST ANIMALS
- Source: Charles River France, L’Arbresle Cedex, France
- Age at study initiation: Young adult animals (approx. 4 weeks old)
- Weight at study initiation: Not determined
- Housing: Group housing of maximally 5 animals per labelled Noryl cage
- Diet: ad libitum
- Water: ad libitum
- Acclimation period: minimum 5 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 18 to 24°C
- Humidity (%): 40 to 70%
- Air changes (per hr): min. 10
- Photoperiod (hrs dark / hrs light): 12/12
Study design: in vivo (non-LLNA)
Inductionopen allclose all
- Route:
- epicutaneous, occlusive
- Vehicle:
- unchanged (no vehicle)
- Concentration / amount:
- Induction - undiluted
Challenge - undiluted
Challengeopen allclose all
- Route:
- epicutaneous, occlusive
- Vehicle:
- unchanged (no vehicle)
- Concentration / amount:
- Induction - undiluted
Challenge - undiluted
- No. of animals per dose:
- 20 test animals, 10 negative controls, 10 positive controls
- Details on study design:
- RANGE FINDER
A preliminary irritation study was conducted in order to select test substance concentrations to be used in the Main Study. The selection of concentrations was based on the following criteria:
- The concentrations are well-tolerated by the animals.
- For the induction exposures: the highest possible concentration that produced mild irritation
(grade 2).
- For challenge exposure: the maximum non-irritant concentration.
The starting- and subsequent concentrations were taken from the series: 100% (undiluted), 50%, 20%, 10%, 5%, 2%, 1%.
INDUCTION
Epidermal application:
A series of four test substance concentrations was used, the highest concentration being the maximum concentration that could technically be applied. Two different concentrations were applied (0.5 mL each) per animal to the clipped flank using patches (2x3 cm) mounted on Medical
tape, which will be held in place with Micropore tape and subsequently Coban elastic bandage. After 6 hours, the dressings were removed and the skin cleaned of residual test substance with water. The resulting dermal reactions were assessed for irritation 24 and 48 hours after removal of the last
dressing. The control animals were treated the same except with vehicle alone.
CHALLENGE
The challenge dose was applied on Day 28. The right flank of all animals was clipped and subsequently treated epidermally with the undiluted test
substance and the vehicle (0.1 mL of each), using Patch Test Plasters. The patches were held in place with Micropore tape and subsequently Coban
elastic bandage. After 6 hours, the dressings were removed and the skin cleaned of residual test substance and vehicle using water. The treated sites were assessed for challenge reactions 24 and 48 hours after removal of the last dressing. After termination, animals were sacrificed using isoflurane and an intra-peritoneal injection of Euthasol 20% .
INTERPRETATION
The results for the experimental animals at the challenge phase were compared with the results for the control animals. All skin reactions were considered signs of sensitization provided that such reactions were less severe or are less persistent in the control group. A sensitization rate (%) was calculated for each concentration as follows: the number of sensitized animals at one concentration as a proportion of the total number of animals of the experimental group. - Positive control substance(s):
- yes
- Remarks:
- ALPHA- HEXYLCINNAMALDEHYDE
Results and discussion
- Positive control results:
- 50% dose, 6/10 animals wiht reactions which were still present at 48 hours.
In vivo (non-LLNA)
Resultsopen allclose all
- Reading:
- other: induction & challenge
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 100%
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- The readings were 0 in all animals at all dose levels at all time points.
- Remarks on result:
- other: see Remark
- Remarks:
- Reading: other: induction & challenge. . Hours after challenge: 48.0. Group: test group. Dose level: 100%. No with. + reactions: 0.0. Total no. in groups: 20.0. Clinical observations: The readings were 0 in all animals at all dose levels at all time points..
- Reading:
- other: induction & challenge
- Hours after challenge:
- 48
- Group:
- negative control
- Dose level:
- 100%
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- The readings were 0 in all animals at all dose levels at all time points.
- Remarks on result:
- other: see Remark
- Remarks:
- Reading: other: induction & challenge. . Hours after challenge: 48.0. Group: negative control. Dose level: 100%. No with. + reactions: 0.0. Total no. in groups: 20.0. Clinical observations: The readings were 0 in all animals at all dose levels at all time points..
Any other information on results incl. tables
The induction and challenge readings were 0 in all animals at all dose levels at all time points. The total number of animals in the test group was 20 and in the negative control group, 10.
Applicant's summary and conclusion
- Interpretation of results:
- not sensitising
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- The test material was found to be not sensitising to guinea pig skin in a Buehler test, with no skin reactions evident in any of the test animals and appropriate positive and negative controls in place. The study was conducted according to OECD TG 406 and in compliance with GLP.
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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