Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 254-227-7 | CAS number: 38970-72-8
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:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 2016
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Version / remarks:
- 1996
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
- Specific details on test material used for the study:
- Clear colourless liquid
Purity: 97.2% - Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 0.06 Pa
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- 0.1 Pa
- Conclusions:
- The isothermal TGA effusion method was applied for the determination of the vapour pressure of 1,1’-(1,1,3-trimethylpropane-1,3-diyl)bis(cyclohexane). The vapour pressure of the test item was 0.06 Pa (4.5 x 10E-4 mm Hg) at 20°C (293K) and 0.10 Pa (7.9 x 10E-4 mm Hg) at 25°C (298K).
- Executive summary:
The isothermal TGA effusion method was applied for the determination of the vapour pressure of 1,1’-(1,1,3-trimethylpropane-1,3-diyl)bis(cyclohexane). The vapour pressure of the test item was 0.06 Pa (4.5 x 10E-4 mm Hg) at 20°C (293K) and 0.10 Pa (7.9 x 10E-4 mm Hg) at 25°C (298K).
Reference
The vapour pressure regression curve constructed using the data of Experiment 1 and Experiment 2 had a coefficient of correlation of <0.99 due to weight loss while being stored in the auto-sampler. Therefore, it was decided to perform a third experiment and to calculate the coefficient of correlation for the Experiment 1/Experiment 2/Experiment 3, Experiment 1/Experiment 2 and Experiment 1/Experiment 3. Coefficient of correlation was >0.99 for the Experiment 1/Experiment 3. Based on this, the results from Experiment 2 were excluded.
Description of key information
The isothermal TGA effusion method was applied for the determination of the vapour pressure of 1,1’-(1,1,3-trimethylpropane-1,3-diyl)bis(cyclohexane). The vapour pressure of the test item was 0.06 Pa (4.5 x 10E-4 mm Hg) at 20°C (293K) and 0.10 Pa (7.9 x 10E-4 mm Hg) at 25°C (298K).
Key value for chemical safety assessment
- Vapour pressure:
- 0.06 Pa
- at the temperature of:
- 20 °C
Additional information
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.
