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Diss Factsheets
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EC number: 449-160-7 | 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
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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:
- 31 May 1999 - 02 Jun 1999
- 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)
- GLP compliance:
- yes
- Type of method:
- static method
- Temp.:
- 20 °C
- Vapour pressure:
- 30.3 Pa
- Remarks on result:
- other: ± 1.5 Pa
- Conclusions:
- A vapour pressure value of 30.3 ± 1.5 Pa at 20°C was determined in a reliable study conducted according to an appropriate test protocol, and in compliance with GLP.
Reference
Details:
The Static Technique was used for the determination of the vapour pressure at 20°C.
For each temperature, a selected number of measurements were used for the calculations. The results of the calculations are summarized in Table 1.
Table 1: Determination of the vapour pressure of the test substance at 3 different temperatures, using the Static Technique
Measurement1 |
Temperature (°C) |
Mean vapour pressure + 2σn-1 |
|
|
|
ln (p) |
Pa |
3 – 18 |
37.09 |
3.98 + 0.03 |
53.5 + 1.6 |
22 – 32 |
30.30 |
3.74 + 0.06 |
41.9 + 2.4 |
34 - 48 |
24.09 |
3.56 + 0.02 |
35.2 + 1.7 |
1A selected number of measurements were used in the calculations.
Note: the calculations were performed using un-rounded values.
The resulting values given in the table were plotted against the reciprocal temperature (T-1) in Kelvin, taking into account the calculated error.
Fitting these data using the least squares method gives a value of 30.3 Pa with 1.5 Pa for 2σn-1(ie. 5%) for the vapour pressure of the test substance at 20°C. The maximum deviation between the fit and the data points is always less than about 2%. Errors made in estimating the mean value per temperature series are up to 5.8%. So a value of 2 Pa (ie. 6.6%) is a reasonable value for the uncertainty in the final result.
Description of key information
Ureidopropyltrialkoxysilane, mixed methoxy and ethoxy esters: 30.3 ± 1.5
Pa at 20°C (measured)
Key value for chemical safety assessment
- Vapour pressure:
- 30.3 Pa
- at the temperature of:
- 20 °C
Additional information
A vapour pressure of 30.3 ± 1.5 Pa at 20°C was determined for the substance by the static method according to OECD Guideline 104.
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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