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EC number: 278-145-6 | CAS number: 75234-41-2
- 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

Endpoint summary
Administrative data
Description of key information
After single occlusive exposure of intact as well as abraded clipped skin for 24 hours with 500 mg of moistened test material per site none of 6 animals showed irritation reactions. Neither erythemas nor edemas were observed at any treated site.
The instillation of 100 mg of the solid analogous substance produced positive effects in the conjunctivae of the 3 animals 1 and 24 hours after treatment. The test article was regarded as a mild irritant to the rabbit eye but the effects were not sufficient for classification.
Key value for chemical safety assessment
Skin irritation / corrosion
Link to relevant study records
- 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:
- other: method not exactly as in standard, no GLP; short report with limited data
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
- Deviations:
- yes
- Remarks:
- intact an abraded skin; 6 Animals; evaluation at 24 and 72 hours only
- GLP compliance:
- no
- Remarks:
- predates GLP regulation
- Species:
- rabbit
- Strain:
- not specified
- Details on test animals or test system and environmental conditions:
- No data
- Type of coverage:
- occlusive
- Preparation of test site:
- clipped
- Vehicle:
- water
- Controls:
- not required
- Amount / concentration applied:
- 500 mg per patch
- Duration of treatment / exposure:
- 24 hours
- Observation period:
- 72 hours
- Number of animals:
- 6
- Details on study design:
- TEST SITE
- Area of exposure: 1 square inch per patch
- Type of wrap if used: the gauze patches were held in place by a rubberized cloth.
REMOVAL OF TEST SUBSTANCE
- Washing (if done): no data
- Time after start of exposure: 24 hours
SCORING SYSTEM: according to US CFR title 16, section 1500.41; similar to Draize system. - Irritation parameter:
- erythema score
- Basis:
- mean
- Remarks:
- all animals showed identical reactions
- Time point:
- other: 24 h and 72 h
- Score:
- 0
- Max. score:
- 0
- Reversibility:
- other: not applicable
- Irritation parameter:
- edema score
- Basis:
- mean
- Remarks:
- all animals showed identical reactions
- Time point:
- other: 24 h and 72 h
- Score:
- 0
- Max. score:
- 0
- Reversibility:
- other: not applicable
- Irritation parameter:
- primary dermal irritation index (PDII)
- Basis:
- mean
- Time point:
- other: 24h and 72 h
- Score:
- 0
- Max. score:
- 0
- Irritant / corrosive response data:
- No irritation
- Other effects:
- none
- Interpretation of results:
- not irritating
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- The test material did not induce skin irritation.
- Executive summary:
After single occlusive exposure of intact as well as abraded clipped skin for 24 hours with 500 mg of moistened test material per site none of 6 animals showed irritation reactions. Neither erythema nor edema were observed at any treated site.
Reference
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
Eye irritation
Link to relevant study records
- Endpoint:
- eye irritation: in vivo
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Short report, no GLP
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 405 (Acute Eye Irritation / Corrosion)
- GLP compliance:
- no
- Remarks:
- pre-dates GLP regulation
- Species:
- rabbit
- Strain:
- New Zealand White
- Details on test animals or tissues and environmental conditions:
- TEST ANIMALS
- Source: Morton commercial rabbits, Parsonage farm, Stansted, UK
- Age at study initiation: 12 to 14 weeks
- Weight at study initiation: 2,44 to 2,7 kg
- Housing: single, grid floor cages
- Diet (e.g. ad libitum): ad lib.
- Water (e.g. ad libitum):ad lib.
- Acclimation period: 15 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 17 to 21
- Humidity (%): 48 to 62
- Air changes (per hr): no data
- Photoperiod (hrs dark / hrs light): 10/ 14 - Vehicle:
- unchanged (no vehicle)
- Controls:
- not required
- Amount / concentration applied:
- TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 100 mg - Duration of treatment / exposure:
- 24 hours
- Observation period (in vivo):
- 7 days
- Number of animals or in vitro replicates:
- 3
- Details on study design:
- REMOVAL OF TEST SUBSTANCE
- Washing (if done): warm water
- Time after start of exposure: 24 h after instillation
SCORING SYSTEM: acc. to Draize (1949) - Irritation parameter:
- conjunctivae score
- Basis:
- mean
- Time point:
- other: 1 hr
- Score:
- 2
- Max. score:
- 2
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- cornea opacity score
- Basis:
- mean
- Time point:
- other: 1 hr
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- iris score
- Basis:
- mean
- Time point:
- other: 1 hr
- Score:
- 0
- Max. score:
- 0
- Irritant / corrosive response data:
- Conjunctival irritation, identified by moderate redness, slight to moderate swelling and discharge, was noted in the 3 treated animals one hour after treatment. At the 24 hour observation all 3 rabbits showed moderate redness of the conjunctival membranes. The conjunctival irritation regressed and all eyes appeared normal on day 7.
No corneal opacity or iridtal inflarnmation was noted during the study period.
The hair adjacent to the eye was stained brown by the test article. - Interpretation of results:
- not irritating
- Remarks:
- Migrated information slight effects not sufficient for classification Criteria used for interpretation of results: EU
- Conclusions:
- The test material was a mild irritant to the rabbit eye.
- Executive summary:
A study was performed to assess the irritant effects of the test material on the eye of the New Zealand White rabbit. The protocol was designed to meet the requirements of Annex Vof the EEC Council Directive 79/831/EEC, the Organisatfon for Economic Co-operation and Development (OECD) and the HSE Approved Code of Practice Notification of New Substances Regulations 1982.
The instillation of 100 mg of solid Brown HH 469 produced positive eye effects in the conjunctivae of the 3 animals one and 24 hours after treatment. The test article was regarded as a mild irritant to the rabbit eye.
Reference
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
Respiratory irritation
Endpoint conclusion
- Endpoint conclusion:
- no study available
Additional information
No irritant effects were observed after dermal application of the test item for 24 hours. Ocular application produced slight transient irritation of the conjunctivae. Recovery was achieved within 2 days. Effects were not sufficient for classification.
Justification for selection of skin irritation / corrosion endpoint:
target substance tested
Justification for selection of eye irritation endpoint:
sole valid study
Justification for classification or non-classification
Not classified.
Classification is not needed as the criteria are not fulfilled, neither after dermal nor after ocular treatment. The slight ocular effects were not sufficient for classification.
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