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EC number: 203-140-2 | CAS number: 103-74-2
- 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
Acute Toxicity: oral
Administrative data
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1985-01-03 - 1985-01-29
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP-Guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 985
- Report date:
- 1985
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 401 (Acute Oral Toxicity)
- Deviations:
- no
- GLP compliance:
- yes
- Test type:
- standard acute method
- Limit test:
- no
Test material
- Reference substance name:
- 2-(2-pyridyl)ethanol
- EC Number:
- 203-140-2
- EC Name:
- 2-(2-pyridyl)ethanol
- Cas Number:
- 103-74-2
- Molecular formula:
- C7H9NO
- IUPAC Name:
- 2-(pyridin-2-yl)ethan-1-ol
- Details on test material:
- - Name of test material (as cited in study report) : Pyridin-2-ethanol
- Physical state : liquid
- Analytical purity : 98%
- Lot/batch No. : CH 5/1
Constituent 1
Test animals
- Species:
- rat
- Strain:
- other: KFM-Han. Wistar (outbred, SPF-Quality)
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Kleintierfarm Madoerin AG/ 4414 Fuellingsdorf, Switzerland
- Age at study initiation: 8 to 11 weeks
- Weight at study initiation: 176 - 241 g (males) and 162 - 183 g (females)
- Fasting period before study: fasting for 12 to 18 hours before receiving the test article
- Housing: the animals were caged in groups of five in macrolon type-3 cages with standard softwood bedding (Lignocel/Schill AG/Switzerland).
- Diet : pelleted standard KLIBA 343/BATCH 15/84 rat maintenance diet (Klingentalmuehle AG/Switzerland), ad libitum.
- Water : tap water ad libitum.
- Acclimation period: 1 week under laboratory conditions after veterinary examination .
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22 +/- 2°C
- Humidity (%): 55 +/- 10%
- Air changes (per hr) : 10 - 15
- Photoperiod (hrs dark / hrs light): 12 hours light, 12 hours dark
IDENTIFICATION: by unique cage number and corresponding colour-coded spots
RANDOMIZATION: in order to set up a fully randomized experiment/animals were assigned to the different groups by means of a computer-generated random algorithm.
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- CMC (carboxymethyl cellulose)
- Details on oral exposure:
- VEHICLE
- Concentration in vehicle: 2 % solution of CMC (Carboxymethylcellulose Natriumsalt purum, visc. 100 CPS, Fluka AG, CH 9470 Buchs, Switzerland) in distilled water
- Amount of vehicle (if gavage): 10 mL at 2000 mg/kg , 20 mL at 5000 mg/kg and 20 mL at 8000 mg/kg
MAXIMUM DOSE VOLUME APPLIED: 20 mL at 5000 mg/kg
DOSAGE PREPARATION: A dilution (w/w) of the test compound was prepared using a homogenizer (Ultra-Turrax/Janke and Kunkel/Staufen/
Germany) and kept homogenous during treatment using a magnetic stirrer (Auer-Bittmann/Switzerland).The preparations were made immediately prior to each dosing. - Doses:
- 2000 mg/kg bw , 5000 mg/kg bw and 8000 mg/kg bw
- No. of animals per sex per dose:
- 5
- Control animals:
- not specified
- Details on study design:
- - single oral intubation via gavage to animals fasted for 12 to 18 hours before treatment
- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: Bodyweights were recorded at the day of administration and days 8 and 15 after the administration / Symptoms were assessed four times at day 1 and then daily
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weight - Statistics:
- The LOGIT-Model (COX, Analysis of Binary Data, London 1977) was applied to estimate the LD50 value. Additionally, the 90, 95 and 99 % confidence intervals for the LD50 for each sex and the slope of the concentration response line was estimated.
Results and discussion
Effect levelsopen allclose all
- Sex:
- male
- Dose descriptor:
- LD50
- Effect level:
- 6 061 mg/kg bw
- Based on:
- test mat.
- Sex:
- female
- Dose descriptor:
- LD50
- Effect level:
- 3 842 mg/kg bw
- Based on:
- test mat.
- 95% CL:
- 2 129 - 5 599
- Sex:
- male/female
- Dose descriptor:
- LD0
- Effect level:
- 4 878 mg/kg bw
- Based on:
- test mat.
- 95% CL:
- 3 608 - 6 513
- Mortality:
- Males :
Dose : 2000 mg/kg : no animal died
Dose : 5000 mg/kg : 1 animal died 24 h after application
Dose : 8000 mg/kg : 3 animals died 1 h after application, 1 more animal died 2 h after application
Females :
Dose : 2000 mg/kg : no animal died
Dose : 5000 mg/kg : 2 animals died 3 h after application , 1 animal died 24 h after application and 1 more animal died at day 3 after application
Dose : 8000 mg/kg : 3 animals died 1 h after application , 1 animal died 2 h after application and 1 more animal died 3 h after after application - Clinical signs:
- other: The following symptoms were observed: 2000 mg/kg : sedation, dyspnea, curved body position, ruffled fur 5000 mg/kg : sedation, somnolence, coma (females), dyspnea, ataxia, ventral body position, latero-abdominal position, curved body position, spasms (fem
- Gross pathology:
- GROUP 1 : 2000 mg/kg :
KILLED AT TERMINATION
male No. 11-15 : No pathoIogic changes.
female No. 16-20 : No pathologic changes.
GROUP 2 : 5000 mg/kg :
DEAD DAY 1
females No. 8, 10 : Intestines : reddened, slight; with reddish contents.
DEAD DAY 2
male No. 1 : Lung marmorated ; Intestines : reddened, with reddish contents.
female No. 6 : Lung/liver: marmorated.
DEAD DAY 3
female No. 7 : Lung : marmorated ; Intestines : with reddish contents.
KILLED AT TERMINATION
male No. 2-5 : No pathoIogic changes.
female No. 9 : No pathologic changes.
GROUP 3 : 8000 mg/kg :
DEAD DAY 1
males No. 22-25 : Intestines : reddened, slight; with reddish contents.
females No. 26-30 : Intestines : reddened, slight; with reddish contents.
KILLED AT TERMINATION
male No. 21 : No pathoIogic changes. - Other findings:
- No other findings were reported.
Any other information on results incl. tables
Table 1 : Signs and symptoms (Dose 2000 mg/kg)
Males No. 11-15 | ||||||||||||||||||
Test day | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | |||
hrs. after start exp. | 1 | 2 | 3 | 5 | 24 | |||||||||||||
sedation | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
dyspnea | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
curved body position | X | X | X | X | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
ruffled fur |
1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Females No. 16-20 | ||||||||||||||||||
Test day | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | |||
hrs. after start exp. | 1 | 2 | 3 | 5 | 24 | |||||||||||||
sedation | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
dyspnea | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
curved body position | X | X | X | X | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
ruffled fur |
1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Table 2 : Signs and symptoms (Dose 5000 mg/kg)
Males No. 1-5 | ||||||||||||||||||
Test day | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | |||
hrs. after start exp. | 1 | 2 | 3 | 5 | 24 | |||||||||||||
sedation | 3 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
somnolence | X | X | X | X | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
dyspnea | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
ataxia | 3 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
ventral body position | X | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
latero-abdominal position | X | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
curved body position | X | X | X | X | X | - | - | - | - | - | - | - | - | - | - | - | - | - |
ruffled fur |
1 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Females No. 6 -10 | ||||||||||||||||||
Test day | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | |||
hrs. after start exp. | 1 | 2 | 3 | 5 | 24 | |||||||||||||
sedation | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
somnolence | X | X | X | X | X | - | - | - | - | - | - | - | - | - | - | - | - | - |
coma | X | X | X | X | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
dyspnea | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
ataxia | 3 | 3 | 3 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
ventral body position | X | X | X | X | X | - | - | - | - | - | - | - | - | - | - | - | - | - |
latero-abdominal position | X | X | X | X | X | - | - | - | - | - | - | - | - | - | - | - | - | - |
curved body position |
X | X | X | X | X | - | - | - | - | - | - | - | - | - | - | - | - | - |
spasms | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
ruffled fur | 1 | 2 | 2 | 2 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Table 3 : Signs and symptoms (Dose 8000 mg/kg)
Males No. 21-25 | ||||||||||||||||||
Test day | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | |||
hrs. after start exp. | 1 | 2 | 3 | 5 | 24 | |||||||||||||
sedation | 3 | 3 | 3 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
somnolence | X | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
dyspnea | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
ataxia | 3 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
latero-abdominal position | X | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
curved body position | X | X | X | X | X | X | X | X | X | - | - | - | - | - | - | - | - | - |
ruffled fur |
0 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Females No. 26-30 | ||||||||||||||||||
Test day | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | |||
hrs. after start exp. | 1 | 2 | 3 | 5 | 24 | |||||||||||||
sedation | 3 | 3 | ||||||||||||||||
somnolence | X | X | ||||||||||||||||
dyspnea | 3 | 3 | DEAD | |||||||||||||||
latero-abdominal position | X | X |
Key : 0/-=none , 1=slight , 2=moderate , 3=severe , X=observed
LOGIT-Estimation (LD50) :
No. of dose groups : 3
Species : rats both sexes
Dose (mg/kg) | No. of animals | No. of responses | % of responses |
2000 | 10 | 0 | 0 |
5000 | 10 | 5 | 50 |
8000 | 10 | 9 | 90 |
LD50 estimate : 4878 mg/kg
90% confidence limits (3848 - 6137 mg/kg)
95% confidence limits (3608 - 6513 mg/kg)
99% confidence limits (3009 - 7666 mg/kg)
LOGIT-Estimation (LD50) :
No. of dose groups : 3
Species : rats males
Dose (mg/kg) | No. of animals | No. of responses | % of responses |
2000 | 5 | 0 | 0 |
5000 | 5 | 1 | 20 |
8000 | 5 | 4 | 80 |
LD50 estimate : 6061 mg/kg
90% confidence limits (4075 - 14400 mg/kg)
95% confidence limits (3630 - 33220 mg/kg)
LOGIT-Estimation (LD50) :
No. of dose groups : 3
Species : rats females
Dose (mg/kg) | No. of animals | No. of responses | % of responses |
2000 | 5 | 0 | 0 |
5000 | 5 | 4 | 80 |
8000 | 5 | 5 | 100 |
LD50 estimate : 3842 mg/kg
90% confidence limits (2513 - 5194 mg/kg)
95% confidence limits (2129 - 5599 mg/kg)
99% confidence limits (930.5 - 7000 mg/kg)
Applicant's summary and conclusion
- Interpretation of results:
- not classified
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- The study was performed according to the OECD TG401 without deviations and therefore considered to be of the highest quality (reliability Klimisch 1). The validity criteria of the test system are fulfilled. On the basis of the test result the test material was considered to be not classified.
- Executive summary:
The test article PYRIDIN-2-ETHANOL was administered to rats of both sexes by oral gavage, at doses from 2000 to 8000 mg/kg. The following death rate was observed:
0 % at 2000 mg/kg
50 % at 5000 mg/kg
90 % at 8000 mg/kg
Based on these observations, the LOGIT-ESTIMATION for the acute oral LD50 of. PYRIDIN-2-ETHANOL in rats of both sexes observed for a period of 15 days is : 4878 mg/kg
For males: 6061 mg/kg
For females: 3842 mg/kg
WITH A 95 % CONFIDENCE INTERVAL
Males/Females : 3608 - 6513 mg/kg
Females : 2129 - 5599 mg/kg
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