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EC number: 482-140-6 | CAS number: 13641-96-8
- 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
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Principles of method if other than guideline:
- The vapour pressure was determined using a thermogravimetry measurements with measurements being made at several temperatures and linear regression analysis used to calculate the vapour pressure at 20°C, 25°C. Testing was conducted using Fick’s diffusion equation for Testing of Chemicals, 23 March 2006.
- GLP compliance:
- not specified
- Type of method:
- effusion method: isothermal thermogravimetry
- Temp.:
- 20 °C
- Vapour pressure:
- 21.4 Pa
- Temp.:
- 25 °C
- Vapour pressure:
- 35.8 Pa
- Endpoint:
- vapour pressure
- Type of information:
- (Q)SAR
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
- Justification for type of information:
- 1. SOFTWARE
EPI Suite version 4.11
2. MODEL (incl. version number)
Mpbpwin v. 1.43
3. SMILES OR OTHER IDENTIFIERS USED AS INPUT FOR THE MODEL
See “Test material information”
4. SCIENTIFIC VALIDITY OF THE (Q)SAR MODEL
See attached information on the model provided by the developer. Further information on the OECD criteria as outlined by the applicant is provided below under "Any other information of materials and methods incl. tables"
5. APPLICABILITY DOMAIN
See attached information and information as provided in "Any other information on results incl. tables".
6. ADEQUACY OF THE RESULT
See assessment of adequacy as outlined in the "Overall remarks, attachments" section. - Qualifier:
- according to guideline
- Guideline:
- other: REACH Guidance on QSARs R.6
- Principles of method if other than guideline:
- - Software tool(s) used including version: EPI Suite v4.11
- Model(s) used: Mpbpwin Model version 1.43
The model estimates vapour pressure by three different methods:
- the Antoine equation (Lyman WJ, Reehl WF and Rosenblatt DH. 1990. Handbook of Chemical Property Estimation Methods. Washington, DC: American Chemical Society);
- the Modified Grain Method (Lyman WJ. 1985. In: Environmental Exposure From Chemicals. Volume I. Neely WB and Blau GE (eds). Boca Raton, FL: CRC Press, Inc., Chapter 2);
- the Mackay Method (Lyman WJ. 1985. In: Environmental Exposure From Chemicals. Volume I. Neely WB and Blau GE (eds). Boca Raton, FL: CRC Press, Inc.).
MPBPWIN selects a “suggested” vapour pressure: the modified Grain for solids and the average of the Antoine and the modified Grain for liquids and gases.
A dataset of 3037 compounds with experimentally determined vapour pressure values has been used to evaluate the model (using the “suggested” values as outcome), giving a correlation coefficient of 0.914. The evaluation clearly shows that the model reliability decrease for vapour pressure below 0.0001 Pa.
The dataset contains 1642 compounds with available experimental Boiling points and Melting points. The correlation coefficient evaluated on this subset (0.949) indicates that VP estimates are more accurate when experimental BP and MP are available.
- Model description: see field 'Justification for type of information', 'Attached justification' and 'any other information on Material and methods'
- Justification of QSAR prediction: see field 'Justification for type of information', 'Attached justification' and/or 'overall remarks' - GLP compliance:
- no
- Type of method:
- other: QSAR
- Temp.:
- 25 °C
- Vapour pressure:
- 96.4 Pa
- Remarks on result:
- other: Mean of Antoine and Modified Grain Method
- Endpoint:
- vapour pressure
- Type of information:
- (Q)SAR
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
- Justification for type of information:
- 1. SOFTWARE
ARChem SPARC. version 4.6
2. MODEL
Properties - Vapor Pressure
3. SMILES OR OTHER IDENTIFIERS USED AS INPUT FOR THE MODEL
See “Test material information”
4. SCIENTIFIC VALIDITY OF THE (Q)SAR MODEL
Information on the OECD criteria as outlined by the applicant is provided below under "Any other information of materials and methods incl. tables".
5. APPLICABILITY DOMAIN
See information provided in "Any other information of materials and methods incl. tables".
6. ADEQUACY OF THE RESULT
See assessment of adequacy as outlined in the "Overall remarks, attachments" section. - Qualifier:
- according to guideline
- Guideline:
- other: REACH Guidance on QSARs R.6
- Principles of method if other than guideline:
- Calculation based on SPARC version v4.6, "Properties" calculation type
- Software tool(s) used including version: SPARC v4.6
- Model(s) used: Properties - Vapor Pressure (Pa)
The model utilizes a conventional LFER (Linear Free Energy Relationships), SAR (Structure Activity Relationships) and PMO (Perturbed Molecular Orbital) theory. For the complete method's description see field 'Any other information on materials and methods incl. tables'.
The datasets used for the model development (315 molecules) and for the external validation (747 molecules) are described in the field 'Any other information on materials and methods incl. tables'.
- Model description: see field 'Any other information on materials and methods incl. tables'.
- Justification of QSAR prediction: see field 'Justification for type of information' and 'overall remarks'. - GLP compliance:
- no
- Type of method:
- other: QSAR
- Temp.:
- 25 °C
- Vapour pressure:
- 51.81 Pa
Referenceopen allclose all
The vapour pressure result is shown in following table.
Temperature |
Mass difference |
Evaporation rate |
Vapour pressure |
Log10(P) |
|
(°C) |
(K) |
(mg) |
(g/(cm²/h)) |
(Pa) |
|
52.9 |
326.05 |
0.044 |
0.01522 |
350.5 |
2.544688022 |
76.0 |
349.15 |
0.172 |
0.05951 |
1,317.8 |
3.123132664 |
99.8 |
372.95 |
0.556 |
0.19238 |
4,064.7 |
3.609028497 |
109.6 |
382.75 |
0.808 |
0.27957 |
5,779.5 |
3.761890268 |
119.1 |
392.25 |
1.112 |
0.38476 |
7,842.4 |
3.89444899 |
Antoine’s formula:
Log10(P) = A - B/(C+t)
Where
P : vapour pressure [Pa], t : temperature [°C]
A = 7.149, B = 727.9, C = 105.1 (Correlation 0.999)
Conclusion:
The vapour pressure of the test material has been determined to be 21.4 Pa at 20 °C and 35.8 Pa at 25 °C.
QSAR result; transition/decomposition is not specified/reported. For detailed description of the model and its applicability, see "Any other information on materials and methods incl. tables”
QSAR result; transition/decomposition is not specified/reported. For detailed description of the model and its applicability, see "Any other information on materials and methods incl. tables".
Description of key information
21.4 Pa at 20 °C and 35.8 Pa at 25 °C (thermogravimetry)
53 - 96 Pa at 25 °C (QSAR)
Key value for chemical safety assessment
- Vapour pressure:
- 21.4 Pa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure was determined using thermogravimetry measurements at several temperatures and linear regression analysis used to calculate a vapour pressure of 21.4 Pa at 20 °C and 35.8 P at 25 °C.
QSAR calculations also indicate that the vapour pressure is low: 96.4 Pa at 25 °C (MPBPWIN version 1.43), 51.81 Pa at 25 °C (SPARC v4.6).
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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