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EC number: 948-046-9 | CAS number: -
- 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
The potential toxic effects of the test substance at dosage levels of 100, 300 and 1000 mg/kg bw/day were investigated in an OECD 422 study, performed under GLP conditions. The test substance or vehicle control (corn oil) was administered to rats via gavage once daily to 4 groups of Crl:CD(SD) rats, each group consisting of 10 males and 10 females. The No-observed-adverse-effect-level (NOAEL) of the test item for systemic toxicity effects was considered to be 1000 mg/kg/day.
Key value for chemical safety assessment
Repeated dose toxicity: via oral route - systemic effects
Link to relevant study records
- Endpoint:
- short-term repeated dose toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 08 February 2017 to 10 November 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 422 (Combined Repeated Dose Toxicity Study with the Reproduction / Developmental Toxicity Screening Test)
- Deviations:
- no
- GLP compliance:
- yes
- Limit test:
- no
- Specific details on test material used for the study:
- Physical Description: Dark brown, clear liquid
Purity: 91% - Species:
- rat
- Strain:
- other: Crl:CD(SD)
- Sex:
- male/female
- Route of administration:
- oral: gavage
- Vehicle:
- corn oil
- Details on oral exposure:
- The test substance formulations were prepared approximately weekly as single formulations for each dosage level, divided into aliquots in corn oil for daily dispensation, and stored refrigerated (2°C to 8°C), protected from light. The test substance formulations were stirred continuously throughout the preparation, sampling, and dose administration procedures.
- Analytical verification of doses or concentrations:
- yes
- Details on analytical verification of doses or concentrations:
- Test material formulations prepared at concentrations of 20, 60, and 200 mg/mL were analyzed by a validated high performance liquid chromatography method using ultraviolet absorbance detection at a wavelength of 260 nm. The analytical results met the applicable protocol-specified acceptance criteria. No test substance was detected in the analyzed vehicle administered to the control group.
- Duration of treatment / exposure:
- Males were dosed throughout the mating period through 1 day prior to euthanasia for a total of 28 doses.
Females received 14 daily doses prior to pairing and were dosed through Lactation Day 13 for a total of 49–53 doses. - Frequency of treatment:
- Once daily
- Dose / conc.:
- 0 mg/kg bw/day (nominal)
- Dose / conc.:
- 100 mg/kg bw/day (nominal)
- Dose / conc.:
- 300 mg/kg bw/day (nominal)
- Dose / conc.:
- 1 000 mg/kg bw/day (nominal)
- No. of animals per sex per dose:
- 10
- Control animals:
- yes, concurrent vehicle
- Details on study design:
- The dose selection was based upon a range-finding study (please see RSS section 7.5.1 Supporting study, Charles River, 2017 (range-finding)).
- Observations and examinations performed and frequency:
- Detailed observations were performed to establish and confirm a pattern of signs in association with dosing according to the following schedule:
F0 Males
Weeks 1-3: Twice daily
Last week of dosing (Study Day 26): 5 males/group only
F0 Females
Week 1 - Twice daily
Last week of dosing (Lactation Day 13): 5 females/group only
Lactation Day 14
Detailed observations were recorded at the following times in relation to dose administration: Approximately 1.5 hours after dosing - Sacrifice and pathology:
- All F0 adults were euthanized by carbon dioxide inhalation.
Males were euthanized following completion of the mating period.
Females that delivered were euthanized on Lactation Day 14; one vehicle control female that failed to deliver was euthanized on Postcohabitation Day 25.
All adult animals were subject to a detailed necropsy. - Statistics:
- Analyses were conducted using two-tailed tests (except as noted otherwise) for minimum significance levels of 1% and 5%, comparing each test substance-treated group to the control group. Body weights, body weight changes, and absolute and relative organ weights were subjected to a parametric one-way ANOVA2 to determine intergroup differences. If the ANOVA revealed significant (p < 0.05) intergroup variance, Dunnett's test was used to compare the test substance-treated groups to the control group.
- Clinical signs:
- effects observed, non-treatment-related
- Description (incidence and severity):
- Clinical observations noted in the test substance-treated groups, including red and yellow material on various body surfaces and hair loss on the forelimbs, were noted infrequently, similarly in the vehicle control group, and/or in a manner that was not dose-related.
- Mortality:
- no mortality observed
- Body weight and weight changes:
- no effects observed
- Food consumption and compound intake (if feeding study):
- no effects observed
- Food efficiency:
- not examined
- Water consumption and compound intake (if drinking water study):
- not examined
- Ophthalmological findings:
- not examined
- Haematological findings:
- no effects observed
- Clinical biochemistry findings:
- effects observed, non-treatment-related
- Description (incidence and severity):
- The statistically significant differencse from the vehicle control group were an increased mean potassium level and decreased mean sodium level in the 100 mg/kg/day group F0 males and a lower mean bile acid level in the 300 mg/kg/day group F0 males. There was no dose-response relationship, no similar occurrence in the opposite sex, and/or the changes were of minimal magnitude. These differences from the vehicle control group were considered to be the result of normal biological variation and were not considered to be of toxicological significance.
- Urinalysis findings:
- not examined
- Behaviour (functional findings):
- no effects observed
- Immunological findings:
- not examined
- Organ weight findings including organ / body weight ratios:
- no effects observed
- Gross pathological findings:
- no effects observed
- Neuropathological findings:
- not examined
- Histopathological findings: non-neoplastic:
- no effects observed
- Histopathological findings: neoplastic:
- not examined
- Other effects:
- no effects observed
- Description (incidence and severity):
- There were no test substance-related effects on thyroid hormone values in the F0 males at any dosage level. Differences from the vehicle control group were considered to be the result of normal biological variation and were not considered to be of toxicological significance.
- Key result
- Dose descriptor:
- NOAEL
- Effect level:
- 1 000 mg/kg bw/day (nominal)
- Based on:
- test mat.
- Sex:
- male/female
- Basis for effect level:
- body weight and weight gain
- clinical biochemistry
- clinical signs
- food efficiency
- gross pathology
- haematology
- histopathology: non-neoplastic
- mortality
- organ weights and organ / body weight ratios
- Key result
- Critical effects observed:
- no
- Conclusions:
- The No-observed-adverse-effect-level (NOAEL) of the test item for systemic toxicity effects was considered to be 1000 mg/kg/day when administered orally by gavage to Crl:CD(SD) rats.
- Executive summary:
The potential toxic effects of the test substance at dosage levels of 100, 300 and 1000 mg/kg bw/day were investigated in an OECD 422 study, performed under GLP conditions. The test substance or vehicle control (corn oil) was administered to rats via gavage once daily to 4 groups of Crl:CD(SD) rats, each group consisting of 10 males and 10 females.
All F0 animals survived to the scheduled necropsies. No test substance-related clinical observations were noted for the 100, 300, and 1000 mg/kg/day group F0 males and females during the weekly detailed physical examinations, at the daily examinations, or approximately 1.5 hours following dose administration. No test substance-related effects were noted on F0 male and female body weights, body weight gains, or food consumption at any dosage level throughout the study. There were no test substance-related effects on F0 organ weights, hematology and serum chemistry parameters, and serum T4 levels (males only) in the 100, 300, and 1000 mg/kg/day groups. No test substance-related gross necropsy observations or microscopic findings were noted for F0 males and females at any dosage level.
Under the conditions of this screening study, 1000 mg/kg/day was considered to be the no-observed-adverse-effect level (NOAEL) for systemic toxicity when administered orally by gavage to Crl:CD(SD) rats.
Reference
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed
- Dose descriptor:
- NOAEL
- 1 000 mg/kg bw/day
- Study duration:
- subacute
- Species:
- rat
- Quality of whole database:
- 1
Repeated dose toxicity: inhalation - systemic effects
Endpoint conclusion
- Endpoint conclusion:
- no study available
Repeated dose toxicity: inhalation - local effects
Endpoint conclusion
- Endpoint conclusion:
- no study available
Repeated dose toxicity: dermal - systemic effects
Endpoint conclusion
- Endpoint conclusion:
- no study available
Repeated dose toxicity: dermal - local effects
Endpoint conclusion
- Endpoint conclusion:
- no study available
Additional information
Justification for classification or non-classification
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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