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EC number: 280-084-5 | CAS number: 82985-35-1
- 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:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 08 January - 16 February 1990
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 990
- Report date:
- 1990
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 406 (Skin Sensitisation)
- Version / remarks:
- (1992)
- Deviations:
- yes
- Remarks:
- (no positive control data is given in the study report)
- GLP compliance:
- yes
- Type of study:
- guinea pig maximisation test
- Justification for non-LLNA method:
- The test was performed in 1990 when the OECD Guideline 406 adopted in 1992 was the current version. According to this guideline "the Guinea Pig Maximisation Test (GPMT) [...] and the non-adjuvant Buehler Test are given preference over other methods.
Test material
- Reference substance name:
- Bis(trimethoxysilylpropyl)amine
- EC Number:
- 280-084-5
- EC Name:
- Bis(trimethoxysilylpropyl)amine
- Cas Number:
- 82985-35-1
- Molecular formula:
- C12H31NO6Si2
- IUPAC Name:
- 3,3,11,11-tetramethoxy-2,12-dioxa-7-aza-3,11-disilatridecane
Constituent 1
In vivo test system
Test animals
- Species:
- guinea pig
- Strain:
- Hartley
- Sex:
- male/female
- Details on test animals and environmental conditions:
- TEST ANIMALS
- Source: Hazleton Research Animals, Inc. (Denver, Pennsylvania, USA)
- Age at study initiation: 5-6 weeks
- Weight at study initiation: 300-337 g (males), 300-350 g (females)
- Housing: individually in suspended stainless steel cages
- Diet: Agway Purina Guinea Pig Diet, ad libitum
- Water: automatic watering system, ad libitum, Municipal water supply (Elizabethtown Water Company)
- Acclimation period: 2 weeks
ENVIRONMENTAL CONDITIONS
- Temperature: monitored and recorded twice daily (not further specified)
- Humidity: monitored and recorded daily (not further specified)
- Photoperiod (hrs dark / hrs light): 12/12
IN-LIFE DATES: from 08 January - 16 February 1990
Study design: in vivo (non-LLNA)
Induction
- Route:
- intradermal and epicutaneous
- Vehicle:
- propylene glycol
- Concentration / amount:
- - intradermal injection: 5% (v/v)
- topical application: undiluted (100%)
Challenge
- Route:
- epicutaneous, occlusive
- Vehicle:
- unchanged (no vehicle)
- No. of animals per dose:
- - range-finding: 3 males and 3 females
- test group (main study): 10 males and 10 females
- control group (main study): 5 males and 5 females - Details on study design:
- RANGE FINDING TESTS:
To confirm that the concentration proposed for intradermal injection (5.0%) did not produce extensive necrosis or ulceration or severe systemic toxicity, two animals (1 male and 1 female) were administered intradermal injections (2 sites per animal) of a 5.0% (v/v) concentration of the test material in propylene glycol. Injections of 0.1 ml per site were made intradermally using a 1.0 cc syringe and a 25 gauge 5/8" needle. Observations were made at 24 and 48 hours for necrosis and ulceration. The results indicated that a 5.0% concentration produced only local necrosis (ie., no extensive necrosis or ulceration occurred). Therefore, this concentration was used for the intradermal induction administration.
A topical range-finding study was performed in 6 animals (3 males and 3 females) to determine the highest concentration which produced mild irritation (to be used for induction) and the highest concentration which did not produce irritation (to be used for challenge). Each of 3 male and 3 female guinea pigs had the following concentrations of the test substance applied to the dorsal and lateral
trunk areas of clipped skin; 10, 25 and 50% (v/v, in paraffin oil), and undiluted test material. Each concentration was tested by applyng 2 x 2 cm filter paper soaked solution of the material, and an occlusive bandage applied for 24 hr. Sites were inspected for signs of local irritation at 24 anh 48 hr after removal of the occlusive dressing. Since none of the concentrations of the test material produced any local erythema, edema, or ulceration, it was decided appropriate to use undiluted test material for both the epicutaneous induction and challenge procedures.
MAIN STUDY
A. INDUCTION EXPOSURE
- No. of exposures: 2 (intradermal and epicutaneous, respectively)
- Exposure period: single injection (intradermal) and 48 h (epicutaneous)
- Test groups:
Intradermal (3 pairs of injections):
Injection 1: 50% (v/v) FCA in deionised water
Injection 2: 5 % (v/v) test substance in propylene glycol
Injection 3: 5% (v/v) test substance in 50% (v/v) FCA in deinosed water
Epicutaneous: 100% test substance
- Control group:
Intradermal (3 pairs of injections):
Injection 1: 50% (v/v) FCA in deionised water
Injection 2: propylene glycol
Injection 3: 50% (v/v) FCA in deinosed water (no vehicle was included due to a technician oversight)
Epicutaneous: vehicle
- Site: shoulder region (intradermal and epicutaneous; injection 1 and 2 were given close together and nearest to head; injection 3 was given more caudally);
- Frequency of applications: induction: every 7 days
- Duration: days 0-7
- Concentrations: 5% (v/v) intradermal and 100% epicutaneous
As the undiluted test substance is non-irritant the skin was pretreated with 10% sodium lauryl sulfate (w/w) 24 h prior to epicutaneous induction.
B. CHALLENGE EXPOSURE
- No. of exposures: 1
- Day(s) of challenge: day 21
- Exposure period: 24 h
- Test groups: test substance
- Control group: test substance
- Site: flank
- Concentrations: undiluted (100%)
- Evaluation (hr after challenge): 24 and 48 h - Challenge controls:
- The control group is actually a challenge control.
- Positive control substance(s):
- yes
- Remarks:
- Dinitrochlorobenzene (DNCB)
Results and discussion
In vivo (non-LLNA)
Resultsopen allclose all
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 5% at induction, 100% at challenge
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- 5 males and 3 females showed desquamation.
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- negative control
- Dose level:
- 5% at induction, 100% at challenge
- No. with + reactions:
- 1
- Total no. in group:
- 10
- Clinical observations:
- 1 female showed slight, well-defined and confluent erythema; 1 male and 1 female showed desquamation.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 5% at induction, 100% at challenge
- No. with + reactions:
- 0
- Total no. in group:
- 20
- Clinical observations:
- 1 male showed desquamation
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- negative control
- Dose level:
- 5% at induction, 100% at challenge
- No. with + reactions:
- 1
- Total no. in group:
- 10
- Clinical observations:
- 1 female showed very slight, barely perceptible and non-confluent erythema.
- Group:
- positive control
- Remarks on result:
- positive indication of skin sensitisation
- Remarks:
- no data given in the report but periodically tested appr. every 4 to 6 months
Applicant's summary and conclusion
- Interpretation of results:
- other: CLP/EU GHS criteria are not met, no classification required according to Regulations (EC) No 1272/2008
- Conclusions:
- The test item was tested for skin sensitisation according to a test protocol that is comparable to the OECD 406 (Guinea Pig Maximization Test), and in compliance with GLP. For the induction exposure the test material was applied intradermal (5%) and epicutaneous (100%) to Hartley guinea pigs. The challenge exposure (topical application) was carried out with the undiluted test material. No skin reactions were observed 24 and 48 h after treatment with the test material in animals induced with the test item. One control animal showed slight erythema. Based on the findings, the test item is considered to be not sensitising to the skin. Based on this data, classification for skin sensitisation according to 67/584/EEC and EC/1272/2008 is not warranted.
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