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EC number: 211-546-6 | CAS number: 661-19-8
- 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
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Endpoint summary
Administrative data
Description of key information
The key acute oral toxicity study for docosan-1-ol, conducted according to OECD Test Guidelie 423, and in compliance with GLP, reports an LD50 value of > 2000 mg/kg bw (Safepharm Laboratories, 1997).
The key acute dermal toxicity study is read-across from the structurally analogous substance icosan-1-ol (CAS 629-96-9, EC 211-119-4). The study was conducted according to generally acceptable scientific principles, and prior to GLP. The study reports an LD50 value of > 16800 mg/kg (Smyth, 1969). No testing is required via inhalatory route since high reliability studies are already in place via the oral and dermal route. Furthermore, the LC50 for inhalation is expected to be greater than the substantially saturated vapour concentration based on weight of evidence across category.
Key value for chemical safety assessment
Acute toxicity: via oral route
Link to relevant study records
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1997
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)
- GLP compliance:
- yes
- Test type:
- acute toxic class method
- Limit test:
- yes
- Species:
- rat
- Strain:
- Sprague-Dawley
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Charles River, Margate, Kent, UK
- Age at study initiation: 8-12 weeks
- Weight at study initiation: males 217-246g, females 206-223g
- Fasting period before study: overnight
- Housing: in groups of 3 by sex in solid - nfloor polypropylene cages furnished with wood flakes.
- Diet: Rat and Mouse expanded diet number 1, ad libitum
- Water: mains water, ad libitum
- Acclimation period: minimum of 5 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19-28
- Humidity (%): 49-75
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12/12 - Route of administration:
- oral: gavage
- Vehicle:
- other: suspension in arachis oil
- Details on oral exposure:
- VEHICLE
- Concentration in vehicle: 200mg/ml
- Justification for choice of vehicle: Arachis oil BP was used as the test material did not dissolve or suspend in distilled water or other aqueous vehicles
MAXIMUM DOSE VOLUME APPLIED: 10ml/kg - Doses:
- 2000 mg/kg
- No. of animals per sex per dose:
- 3M initially followed when it appeared the males would survive by 3F, fasted
- Control animals:
- no
- Details on study design:
- - Duration of observation period following administration: 14 days
- Frequency of observations and weighing: The rats were observed for clinical signs of toxicity and mortality 30 minutes, 1, 2 and 4 hours after dosing and thereafter daily throughout the observation period. Body weights were recorded prior to dosing on day 0 and then at 7 and 14 days.
- Necropsy of survivors performed: yes - Key result
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- > 2 000 mg/kg bw
- Based on:
- test mat.
- Mortality:
- There were no deaths.
- Clinical signs:
- other: No clinical signs of systemic toxicity.
- Gross pathology:
- Unremarkable
- Other findings:
- None reported (no sex specific differences, no potential target organs identified).
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- In the acute oral toxicity study, 2000 mg/kg of test material in arachis oil was administered orally to 3 male and 3 female rats. The rats were observed for clinical signs of toxicity at 30 minutes, 1, 2 and 4 hours after dosing and thereafter daily throughout the 14-day observation period. Body weights were also recorded prior to dosing on day 0 and then at 7 and 14 days.
Necropsy of survivors was performed at the end of the 14-day study period and macroscopic changes were noted.
No deaths were recorded throughout the observation period. No clinical signs of systemic toxicity were noted and there were no macroscopic abnormalities at necropsy. The study reports an LD50 value of at least 2000 mg/kg bw. The study was conducted according to OECD Test Guideline 423, and in compliance with GLP.
Reference
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed
- Dose descriptor:
- LD50
- Value:
- > 2 000 mg/kg bw
Acute toxicity: via inhalation route
Endpoint conclusion
- Endpoint conclusion:
- no study available
Acute toxicity: via dermal route
Link to relevant study records
- Endpoint:
- acute toxicity: dermal
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Remarks:
- result reporting is limited
- Principles of method if other than guideline:
- Method: other: Smyth et al, 1962
- GLP compliance:
- not specified
- Species:
- rabbit
- Strain:
- New Zealand White
- Sex:
- male
- Details on test animals or test system and environmental conditions:
- - Source: no data
- Weight at study initiation: 2.5 -3.5 kg
- Group size: 4
- Controls: no - Type of coverage:
- occlusive
- Vehicle:
- unchanged (no vehicle)
- Details on dermal exposure:
- - Area covered: entire trunk
- No. of animals per sex per dose:
- 4
- Key result
- Sex:
- male
- Dose descriptor:
- LD50
- Effect level:
- > 20 mL/kg bw
- Based on:
- test mat.
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The LD50 of >20 ml/kg is reported in a relaible study conducted according to appropriate protocol. The study is a read across from 1-icosanol (CAS 629-96-9).
- Executive summary:
In an acute dermal toxicity study, the test material (icosan-1 -ol) was applied onto rabbit skin and kept in contact to the skin for 4 hours under occlusive dressing. There is lack of detail on the materials and methods used, as well as results, however the study reports an LD50 value of > 20 ml/kg (>16,800 mg/kg using the density of 0.84 g/cm3 reported in chapter 2.3). The study meets generally accepted scientific principles, acceptable for assessment. Study considered valid although result reporting is limited. The study is a read across from icosan-1-ol (CAS 629-96-9).
Reference
Results were not reported in detail. The LD50 was >20 ml/kg. (>16,800 mg/kg using the density of 0.84 g/cm3 reported in chapter 2.3). No further
details available.
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed
- Dose descriptor:
- LD50
- Value:
- > 16 800 mg/kg bw
Additional information
The key acute oral toxicity study was conducted according to OECD Test Guideline 423, and in compliance with GLP. The study reports an LD50 value of > 2000 mg/kg bw (Safepharm Laboratories, 1997).
Following oral administration of 2000 mg/kg bw of test material in arachis oil to 3 male and 3 female rats, no mortalities, clinical signs of toxicity or changes in body weight gain were recorded during the 14-day observation period.
The key acute dermal toxicity study is read-across from the structurally analogous substance icosan-1-ol (CAS 629-96-9, EC 211-119-4). The study was conducted according to generally acceptable scientific principles, and prior to GLP. The study reports an LD50 value of > 16800 mg/kg (Smyth, 1969). The test material was applied onto rabbit skin and kept for 4 hours under occlusive dressing. The study lacks full details on materials and methods, as well as results.
Discussion of trends in the Category of C6-24 linear and essentially-linear aliphatic alcohols:
Acute toxicity tests of the linear and essentially linear alcohols do not indicate any potential hazard for acute, dermal or inhalation toxicity. The available data for the Category have been reviewed with the conclusion that the long chain alcohols are of a low order of acute oral and dermal toxicity, and the inhalation LC50 is expected to be greater than the substantially saturated vapour concentration (Veenstra G, Webb C et al., 2009). Tests on various substances included in this category are all supportive of these results and do not warrant classification for most of the acute toxicity endpoints under GHS criteria. The majority of the substances are therefore not classified for acute toxicity in accordance with Regulation (EC) No 1272/2008. The only exception to this is hexan-1-ol, which finds that the acute dermal data for the test substance are consistent with Acute dermal tox category 4 and Acute oral tox 4 H302/R22, in line with the Annex VI entry. A full discussion of the Category can be found in the Human Health Alcohols C6-24 Category report (PFA, 2016).
Justification for selection of acute toxicity – oral endpoint
The study was conducted according to an appropriate OECD test
guideline, and in compliance with GLP.
Justification for selection of acute toxicity – dermal endpoint
The study meets generally accepted scientific principles. Study is
considered valid although result reporting is limited. The study is a
read across from icosan-1-ol (CAS 629-96-9).
Justification for classification or non-classification
Based on the available data, docosan-1-ol does not require classification for acute toxicity according to Regulation (EC) No 1272/2008.
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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