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EC number: 209-665-3 | CAS number: 589-92-4
- 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
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2015-09-14 to 2016-01-14
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- isoteniscope
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 397 Pa
- Remarks on result:
- other: Mean of 3 runs
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 299 Pa
- Remarks on result:
- other: Mean of 3 runs
- Transition / decomposition:
- no
- Remarks on result:
- other:
- Remarks:
- The test item did not change in appearance during testing
- Conclusions:
- In a reliable and conclusive study according to OECD TG 104, vapor pressure of the test item has been determined to be 397 Pa at 25°C and 299 Pa at 20°C.
- Executive summary:
The vapour pressure of the test item was determined according to the OECD TG 104. Three runs were made.
The vapor pressure of the test item has been determined to be 397 Pa at 25°C and 299 Pa at 20°C.
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1993
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Principles of method if other than guideline:
- Apparatus: all-glass, dynamic recirculating still decribed by Walas SM in 1985, attached to a Cottrell pump.
The still was suitable for pressures from 0.25 to 400 kPa, and temperatures up to 523.15 K. With the Cottrell pump liquid and vapour phases are kept in close contact and also with the temperature-sensing element. A digital Fisher thermometer (accuracy 0.1 K) was used to measure the equilibrium temperature T.
The pressure P was measured with adigital manometer(accuracy 0.01 kPa).The same recirculating still was used to measure the vapour pressures of the pure components.
Method: The pressure was fixed and the heating and shaking system of the liquid was connected. To ensure the stationary state, the boiling point was kept for 15 min. After is was sure that stationary state was kept, a sample of liquid and vapour were taken of the Cottrell pump.
Special syringes, which allowed to take reduced volume samples in a system in partial vacuum were used for the extractions.
Samples of 3 µL were withdrawn from the condensed vapor and liquid streams of the still, and were analyzed with a Hewlett Packard 5710 A GC with a thermal-conductivity detector. GC response peaks were integrated by using a Hewlett 3394 A integrator. The GC column used was packed with 25% of UCON LB 550X upon Chrom W(80/100), of 2 m length and 1/8-in. diameter. Chromatographic analysis were carried out at the following conditions:
Temperature: 120°C; gas carrier: helium, 20 cm3/min.
The GC was calibrated with gravimetrically prepared standard solutions. With repeated measurements the standard deviation was less than 0.001 mole fraction. At least two analyses were made of each liquid and each vapor sample. - GLP compliance:
- no
- Other quality assurance:
- other: no information
- Type of method:
- other: vapor-liquid equilibrium by a dynamic equilibrium method
- Specific details on test material used for the study:
- Cyclohexanol high purity grade (>99.9%) from the Proquimed Co. and 4-Methylcyclohexanone from Merck (>99.0%). Purity checked by GC.
- Temp.:
- 339.15 K
- Vapour pressure:
- 2.72 kPa
- Temp.:
- 444.55 K
- Vapour pressure:
- 102.39 kPa
- Conclusions:
- The vapour pressure of 4-Methylcyclohexanone at 20°C was evaluated by the Registrant using the reported Antoine equation, and determined to be 173.4 Pa.
Referenceopen allclose all
Summary of results
Run |
Log10Vapor Pressure |
Log10Vapor Pressure |
1 |
2.533 |
2.404 |
2 |
2.654 |
2.532 |
3 |
2.611 |
2.488 |
Mean |
2.599 |
2.475 |
Vapor Pressure (Pa) |
397 |
299 |
The test item did not change in appearance during testing.
Temperature range for measuring the Vapor pressure was 339.15 K ( = 66.0°C) to 444.55 K (= 171.4°C).
Table: Vapor Pressure Pi, for Test substance versus Temperature:
Pi (kPa) |
T (K) |
2.72 |
339.15 |
4.69 |
350.45 |
6.17 |
356.85 |
7.22 |
360.65 |
9.16 |
366.55 |
11.02 |
371.45 |
15.98 |
381.55 |
24.15 |
393.85 |
35.10 |
405.65 |
42.75 |
412.05 |
52.08 |
418.95 |
59.76 |
423.95 |
71.96 |
430.65 |
79.42 |
434.55 |
89.35 |
439.05 |
102.39 |
444.55 |
Description of key information
Two studies are available reporting vapour pressure for 4 -methylcyclohexanone:
299 Pa at 20°C, OECD TG 104, O'Connor 2016
173.4 Pa at 20°C, calculated, no guideline, Aucejo 1993
The more recent study conducted under GLP (O'Connor, 2016) was used as the key study and taken forward for the purposes of risk assessment.
Key value for chemical safety assessment
- Vapour pressure:
- 397 Pa
- at the temperature of:
- 25 °C
Additional information
Vapour pressure in literature:
at 339.15 K (66°C) = 2.72 kPa and
at 444.55 K (171.4°C) = 102.39 kPa
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