Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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: 485-110-0 | CAS number: 53535-81-2
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- key study
- Study period:
- 2008-05-07
- Reliability:
- 1 (reliable without restriction)
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- other: Expert Statement
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
Materials and methods
Test guideline
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- Modified Grain method (Lyman, 1985)
- Type of method:
- other: QSAR: EPIWIN (Modified Grain method)
Test material
- Reference substance name:
- -
- EC Number:
- 485-110-0
- EC Name:
- -
- Cas Number:
- 53535-81-2
- Molecular formula:
- Hill formula: C5H11LiO CAS formula: C5H12O.Li
- IUPAC Name:
- lithium(1+) 2-methylbutan-2-olate
- Reference substance name:
- Lithium-tert-amoxide
- IUPAC Name:
- Lithium-tert-amoxide
- Reference substance name:
- 2-methylbutan-2-ol
- EC Number:
- 200-908-9
- EC Name:
- 2-methylbutan-2-ol
- Cas Number:
- 75-85-4
- Molecular formula:
- C5H12O
- IUPAC Name:
- 2-methylbutan-2-ol
- Details on test material:
- Based on the immediate hydrolysis of the test substance Lithium-tert-amoxide (LTA) in aqueous media only the corresponding hydroxide, LiOH and tert-amyl alcohol are present. The vapour pressure of tert-amyl alcohol was determined.
Constituent 1
Constituent 2
Constituent 3
Results and discussion
Vapour pressureopen allclose all
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: Calculated value for LTA by EPIWIN
- Temp.:
- 25 °C
- Vapour pressure:
- 2 240 Pa
- Remarks on result:
- other: value for tert-amyl alcohol
Any other information on results incl. tables
no remarks
Applicant's summary and conclusion
- Conclusions:
- Due to immediate hydrolysis of the test substance lithium-tert-amoxide (LTA) forming lithium hydroxide (LiOH) and tert-amyl alcohol when coming in contact with water, furthermore, as the available experimental methods allow a determination of vapour pressures down to 10–5 Pa only, an experimental determination of the vapour pressure is not meaningful.
- Executive summary:
Lithium-tert-amoxide (LTA) is sensitive to moisture and hydrolyses spontaneously upon contact with water forming LiOH and tert-amyl alcohol. By means of the program EPIWIN, the vapour pressure of LTA was estimated to be 4.17 x 10-7 mm Hg corresponding to 5.56 x 10-5 Pa at 25°C (using the Modified Grain method).
In addition, reference is also made to literature data available for one of the resulting hydrolysis products tertamyl alcohol. At 25°C the vapour pressure of tert-amyl alcohol is stated to be 16.8 mm Hg, corresponding to 2.24 x 10+3 Pa (Daubert, T.E. and Danner,R.P.; Data compilation Tables of Properties of Pure Compounds, NY; Amer Inst for Phys Prop Data (1989)).
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.
