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EC number: 421-950-6 | CAS number: 187674-70-0 Y-104
- 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
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- Nanomaterial pour density
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- 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

Acute Toxicity: dermal
Administrative data
- Endpoint:
- acute toxicity: dermal
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 14 December 1995 to 28 December 1995
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guidelines and the study was conducted under GLP conditions.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 996
- Report date:
- 1996
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 402 (Acute Dermal Toxicity)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.3 (Acute Toxicity (Dermal))
- Deviations:
- no
- GLP compliance:
- yes
- Test type:
- fixed dose procedure
- Limit test:
- yes
Test material
- Reference substance name:
- Tetrasodium 3-[[4-[[4,6-bis-[(3-sulfonatoprop-1-yl)thio]-1,3,5-triazin-2-yl]amino]-2-methyl-5-methoxy-phenyl]azonaphthalene-1,5-disulfonate
- EC Number:
- 421-950-6
- EC Name:
- Tetrasodium 3-[[4-[[4,6-bis-[(3-sulfonatoprop-1-yl)thio]-1,3,5-triazin-2-yl]amino]-2-methyl-5-methoxy-phenyl]azonaphthalene-1,5-disulfonate
- Cas Number:
- 187674-70-0
- Molecular formula:
- C27H26N6Na4O13S6
- IUPAC Name:
- tetrasodium 3-{2-[4-({4,6-bis[(3-sulfonatopropyl)sulfanyl]-1,3,5-triazin-2-yl}amino)-5-methoxy-2-methylphenyl]diazen-1-yl}naphthalene-1,5-disulfonate
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Substance type: yellow-brown to orange powder.
- Storage condition of test material: at room temperature.
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Sprague-Dawley
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Strain: Sprague-Dawley ICO: OFA-SD (IOPS Caw)
- Age at study initiation: ~ 8 weeks old
- Weight at study initiation: Males 296 ± 4 g, females 232 ± 7 g.
- Housing: Individually during treatment in polycarbonate cages (35.5 x 23.5 x 19.3 cm). During acclimatisation animals were housed in groups by sex in polycarbonate cages (48 x 27 x 20 cm).
- Diet (e.g. ad libitum): pelleted diet ad libitum.
- Water (e.g. ad libitum): filtered water ad libitum.
- Acclimation period: At least 5 days.
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 21 ± 2°C
- Humidity (%): 30 to 70 %
- Air changes (per hr): 12 cycles/hour of filtered, non-recycled air.
- Photoperiod: 12 hr light/dark cycle
Administration / exposure
- Type of coverage:
- semiocclusive
- Vehicle:
- unchanged (no vehicle)
- Details on dermal exposure:
- TEST SITE
- Site preparation: The hair was clipped on the day of dosing from an area 6 x 8 cm. Only animals with healthy intact skin were used.
- Area of exposure: 5 x 6 cm for females and 5 x 7 cm for males.
- % coverage: 10 % of the body surface of each animal was treated.
- Type of wrap if used: The test material was applied to a hydrophilic gauze pad, pre-moistened with 2 mL of distilled water. The gauze was held in place using an adhesive hypoallergenic aerated semi-occlusive dressing and a restraining bandage.
REMOVAL OF TEST SUBSTANCE
- Washing: Any residual test material was removed with a gauze pad moistened with water.
- Time after start of exposure: 24 hours. - Duration of exposure:
- 24 hours
- Doses:
- 2000 mg/kg bw
- No. of animals per sex per dose:
- 5 males and 5 females
- Control animals:
- no
- Details on study design:
- - Duration of observation period following administration: 14 days
- Necropsy of survivors performed: yes
- Examinations and frequency of observations:
Clinical signs: Animals were observed frequently in the hours following administration, and then at least once daily thereafter for a period of 14 days. Type, time of onset and duration of clinical signs and local cutaneous reactions were recorded on an individual basis.
Mortality: Animals were checked frequently for mortality and signs of morbidity in the hours following administration and at least once daily thereafter. The time of death was recorded individually in terms of hours after treatment.
Body weight: Animals were weight prior to administration on day 1 and then on days 8 and 15.
Body weight gain of the treated animals was compared to a reference curve created at the test facility, of control animals with the same initial weight.
Necropsy: Animals were euthanized on day 15 and macroscopic examinations were performed.
Examination included; opening of the thoracic and abdominal cavities and examination of the main organs (digestive tract, heart, kidneys, liver, lungs, pancreas, spleen and any with signs of abnormalities).
In the case of macroscopic lesions, organ samples were taken and preserved in 10 % buffered formalin.
No microscopic examinations were performed.
Results and discussion
Effect levels
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- > 2 000 mg/kg bw
- Based on:
- test mat.
- Mortality:
- No deaths occurred during the observation period.
- Clinical signs:
- other: No clinical signs of toxicity were observed during the study. Slight orange colouration of the test site was observed in all animals on day 2. Crusts were noted in two males and two females on day 3; they persisted up to day 5 in one male and one female.
- Gross pathology:
- Macroscopic examination of the main organs revealed no apparent abnormalities.
Any other information on results incl. tables
Table 1: Mean Body Weight and Mean Body Weight Gain (g)
Sex |
Body Weight on Days |
||||
1 |
Gain |
8 |
Gain |
15 |
|
Male |
296 (± 4) |
37 (± 11) |
334 (± 15) |
50 (± 5) |
384 (± 18) |
Female |
232 (± 7) |
4 (± 4) |
235 (± 6) |
10 (± 13) |
245 (± 15) |
(± Standard Deviation)
Applicant's summary and conclusion
- Interpretation of results:
- not classified
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- Under the conditions of the test, no signs of mortality or treatment related toxicity were observed in any of the animals exposed to the test material applied under a semi-occlusive dressing. Therefore the LD50 of the test material was determined to be > 2000 mg/kg bw in both male and female rats.
- Executive summary:
The acute dermal toxicity of the test material was determined in a study conducted under GLP conditions in accordance with the standardised guidelines OECD 402 and EU method B.3.
Five male and 5 female Sprague-Dawley rats were exposed to the test material at 2000 mg/kg bw applied in its original form under a semi-occlusive dressing.
Under the conditions of the test, no overt signs of toxicity or mortality were observed in any of the treated animal. Body weight again was slightly decreased in females in the first week only, whereas male body weight gain was not affected. Macroscopic examinations at necropsy revealed no abnormalities.
Based on these observations the LD50 of the test material was determined to be > 2000 mg/kg bw in both male and female rats.
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