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Diss Factsheets
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EC number: 943-338-2 | 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
Acute Toxicity: oral
Administrative data
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1980
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Non-GLP study conducted similarly to OECD Guideline 401 with deviations: no data about purity and no certificate of analysis of test substance; bodyweight changes were not reported
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 980
- Report date:
- 1980
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 401 (Acute Oral Toxicity)
- Deviations:
- yes
- Remarks:
- no GLP statement; no data about purity and no certificate of analysis of test substance; bodyweight changes were not reported
- Principles of method if other than guideline:
- Not applicable
- GLP compliance:
- yes
- Test type:
- standard acute method
- Limit test:
- no
Test material
- Reference substance name:
- Reaction mass of 4-methylene-2-phenyltetrahydro-2H-pyran and 4-methyl-2-phenyl-3,6-dihydro-2H-pyran
- EC Number:
- 943-338-2
- Molecular formula:
- C12H14O
- IUPAC Name:
- Reaction mass of 4-methylene-2-phenyltetrahydro-2H-pyran and 4-methyl-2-phenyl-3,6-dihydro-2H-pyran
- Test material form:
- other: liquid
- Details on test material:
- - Name of test material (as cited in study report): 2-Phenyl-4-methyl dihydropyran
- Date received: 10 October 1980
- Physical state: Clear colourless liquid with a pungent odour
Please note that although the substance is stated as a mono-constituent substance 2-phenyl-4-methyl dihydropyran in the report, recent analytical data has determined the substance to be a multi-constituent (Reaction mass of 3,6-dihydro-4-methyl-2-phenyl-2H-pyran and tetrahydro-4-methylene-2-phenyl-2H-pyran). As the chemical manufacturing process has not changed since the report was written, the recent analytical information is relevant to the batch which was tested.
Constituent 1
Test animals
- Species:
- rat
- Strain:
- other: Cpb; WU; Wistar Random
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Age at study initiation: Young adult
- Source: Central Institute for the Breading of Laboratory Animals TNO, Zeist, The Netherlands
- Weight at study initiation: Males: 160-205 g; females: 114-162 g
- Housing: Animals were housed in groups of five in screen-bottomed stainless steel cages.
- Fasting period before study: Overnight
- Diet: Stock diet, ad libitum
- Water: Tap water, ad libitum
ENVIRONMENTAL CONDITIONS
- Temperature: 23 ± 1 °C
- Ventilation: Well-ventilated room
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- unchanged (no vehicle)
- Details on oral exposure:
- MAXIMUM DOSE VOLUME ADMINISTERED: 6 mL/kg bw
- Doses:
- 3.5, 4.2, 5.0 and 6.0 mL/kg bw
- No. of animals per sex per dose:
- Five
- Control animals:
- no
- Details on study design:
- - Duration of observation period following administration: 14 days
- Necropsy of survivors performed: Yes - Statistics:
- LD50 value was calculated according to the method of Weil (1952).
Results and discussion
- Preliminary study:
- Not applicable
Effect levels
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- 4.2 mL/kg bw
- Based on:
- test mat.
- 95% CL:
- 3.27 - 5.37
- Remarks on result:
- other: equivalent to 4229 (3293-5408) mg/kg bw; calculated using the density of 1.007 g/L (literature)
- Mortality:
- Number of dead animals:
- At 3.5 mL/kg bw: 1/5 male and 2/5 females
- At 4.2 mL/kg bw: 2/5 males and 3/5 females
- At 5.0 mL/kg bw: 3/5 males and 4/5 females
- At 6.0 mL/kg bw: 3/5 males and 4/5 females
- Deaths occurred between 5 hours and 3 days after dosing. - Clinical signs:
- other: - Sluggishness, sedation and ataxia were observed within a few hours after treatment and later, coma was frequently observed. - All survivors recovered gradually and appeared healthy at the end of the observation period.
- Gross pathology:
- - Gross observations at necropsy were normal for all of the surviving animals.
- Other findings:
- None
Any other information on results incl. tables
None
Applicant's summary and conclusion
- Interpretation of results:
- not classified
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- The oral LD50 of Reaction mass of 3,6-dihydro-4-methyl-2-phenyl-2H-pyran and tetrahydro-4-methylene-2-phenyl-2H-pyran, is higher than 2000 mg/kg bw in rats therefore it is not classified according to the Directive 67/548/EEC and the CLP Regulation.
- Executive summary:
In an acute oral toxicity study performed similarly to OECD Guideline 401, groups of rats (5/sex/group) were given a single oral dose of Reaction mass of 3,6-dihydro-4-methyl-2-phenyl-2H-pyran and tetrahydro-4-methylene-2-phenyl-2H-pyran at 3.5, 4.2, 5.0 and 6.0 mL/kg bw. Animals were then observed for mortality and clinical signs for 14 days and all survivors were macroscopically necropsied after sacrifice.
Mortalities were 30, 50, 70 and 70 % at 3.5, 4.2, 5.0 and 6.0 mL/kg bw, respectively. Deaths occurred between 5 hours and 3 days after dosing. Sluggishness, sedation and ataxia were observed within a few hours after treatment and later, coma was frequently observed. All survivors recovered gradually, appeared healthy at the end of the observation period and presented a normal appearance at autopsy. In this study, the combined oral LD50 of Reaction mass of 3,6-dihydro-4-methyl-2-phenyl-2H-pyran and tetrahydro-4-methylene-2-phenyl-2H-pyran in rats was calculated to be 4.2 (3.27-5.37) mL/kg bw [equivalent to 4229 (3293-5408) mg/kg bw; calculated using the density of 1.007 g/L (literature)].
The oral LD50 of Reaction mass of 3,6-dihydro-4-methyl-2-phenyl-2H-pyran and tetrahydro-4-methylene-2-phenyl-2H-pyran is higher than 2000 mg/kg bw in rats therefore it is not classified according to the Directive 67/548/EEC and the CLP Regulation.
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