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EC number: 214-189-4 | CAS number: 1112-39-6
- 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
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- 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
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- 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:
- 10-Oct-2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 1.5.2 Static method
- GLP compliance:
- no
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Type of method:
- static method
- Temp.:
- 20 °C
- Vapour pressure:
- 86.6 hPa
- Temp.:
- 40 °C
- Vapour pressure:
- 205 hPa
- Conclusions:
- Vapour pressure values of 86.6 hPa at 20 °C and 205 hPa at 40 °C was determined in a reliable study conducted according to an appropriate test protocol.
- Endpoint:
- vapour pressure
- Type of information:
- (Q)SAR
- Adequacy of study:
- supporting study
- Study period:
- 2018
- 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:
- QSAR prediction
- Principles of method if other than guideline:
- The result was obtained using an appropriate QSAR method (see attached QMRF and QPRF for details).
- GLP compliance:
- no
- Temp.:
- 25 °C
- Vapour pressure:
- 7 400 Pa
- Conclusions:
- A vapour pressure 7400 Pa at 25°C was obtained for the substance using an appropriate calculation method. The result is considered to be reliable.
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Principles of method if other than guideline:
- no guideline stated
- GLP compliance:
- no
- Temp.:
- 20 °C
- Vapour pressure:
- 100 hPa
- Conclusions:
- A vapour pressure of 100 hPa is reported in secondary literature (company data summary). The original reference was not available for review and no further information is available. The reliability of this result is not assignable.
Referenceopen allclose all
Results
Raw data
Data point |
Time [min]* |
Temperature T [°C] |
Vapor pressure p [hPa] |
1 |
15 |
20 |
86.0 |
2 |
20 |
25 |
109.0 |
3 |
20 |
30 |
136.3 |
4 |
20 |
40 |
204.4 |
* Time for equilibration
Conversion of Raw Data
Data point |
T [K] |
1fT [1/K] |
log p [hPa] |
1 |
293.15 |
0.003411 |
1.93450 |
2 |
298.15 |
0.003354 |
2.03743 |
3 |
303.15 |
0.003299 |
2.13450 |
4 |
313.15 |
0.003193 |
2.31048 |
Results from Calculation
Estimated vapour pressure |
Temperature |
86.6 hPa |
20°C |
205 hPa |
40°C |
The estimated value is calculated using the formula of regression
Formula of regression: log p [hPa] = -1722.81 1/T [1/K] = 7.81418
Description of key information
Parent substance: 86.6 hPa at 20°C, 205 hPa at 40°C (measured)
Key value for chemical safety assessment
- Vapour pressure:
- 86.6 hPa
- at the temperature of:
- 20 °C
Additional information
A measured vapour pressure value of 86.6 hPa at 20°C and 205 hPa at 40°C was determined according to OECD 104 (static method). The results are considered to be reliable. In a supporting study a value of 74.0 hPa at 25°C was determined using an appropriate calculation method (QSAR). The higher value determined for the measured result may due to residual amounts of (more volatile) solvent.
Another measured value of 100 hPa at 20°C is available from a secondary source, but the original reference was not available for review and no information on the method is given, so the reliability of the result is not assignable. A value of 113.68 at 25 °C is reported in the SIDS Initial Assessment Profile for Dimethoxydimethylsilane (2010).
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.

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