Registration Dossier
Registration Dossier
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EC number: 200-899-1 | CAS number: 75-76-3
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Principles of method if other than guideline:
- The vapour pressure of tetramethylsilane at 20ºC was calculated from a temperature-vapour pressure correlation that was developed by the AIChE DIPPR® using peer-reviewed experimental data measured at temperatures ranging from 208-294 K.
- GLP compliance:
- not specified
- Type of method:
- other: Temperature-vapour pressure correlation
- Key result
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 79 474 Pa
- Remarks on result:
- other: The value is reported as 79500 Pa
- Conclusions:
- A vapour pressure value of approximately 79500 Pa at 20°C was determined for the substance using a temperature-vapour pressure correlation. The result is considered to be reliable.
Reference
Temperature (K) |
Pressure (mmHg) |
208.94 |
6.24 |
217.18 |
11.71 |
236.17 |
41.5 |
242.85 |
61.28 |
250.05 |
90.79 |
256.08 |
123.68 |
263.73 |
178.77 |
269.19 |
229.12 |
274.57 |
289.35 |
281.99 |
392.31 |
287.97 |
494.99 |
292.62 |
588.54 |
282.95 |
407.57 |
288.41 |
503.41 |
293.65 |
611.29 |
Log P (mmHg) = -2346.9849/T – 12.239609logT + 0.00662430T + 39.038565
Description of key information
Vapour pressure: approximately 79500 Pa at 20°C (temperature-vapour pressure correlation)
Key value for chemical safety assessment
- Vapour pressure:
- 79 500 Pa
- at the temperature of:
- 20 °C
Additional information
Two reliable measured vapour pressure data are available for the submission substance in handbooks or collections of reliable data. A vapour pressure value of approximately 79500 Pa at 20°C was determined for the substance using a temperature-vapour pressure correlation method, the study was determined using a temperature range of -64°C to 20.5°C. The result is considered to be reliable and is selected as key study.
The key study is supported by a vapour pressure value of approximately 89000 Pa at 25°C which was reported for the substance. The key study is selected because the source gives more information about the methods used; both results are consistent with the substance being highly volatile.
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.
