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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 244-121-9 | CAS number: 20941-65-5
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
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 23 March 2006
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 24 August 2009
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: Knudsen cell
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Name of the test material (as cited in study report): Tellurium diethyldithiocarbamate
- Batch No.: 60700109
- Expiration date of the lot/batch: 10-07-2018
- Purity: 99.19% (HPLC)
- Appearance: Light orange to yellow powder
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: stored in a tightly closed vessel at 16.6 – 20.4 °C under dry conditions in the dark.
- Solubility and stability of the test substance in the solvent/vehicle: H2O: <0.1g/L; EtOH: unknown; acetone: unknown CH3CN: unknown; DMSO: unknown - Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- not measured/tested
- Remarks:
- calculated from the regression equation
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- not measured/tested
- Remarks:
- calculated from the regression equation
- Temp.:
- 60 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: determined experimentally
- Temp.:
- 75 °C
- Vapour pressure:
- 0.002 Pa
- Remarks on result:
- other: determined experimentally
- Temp.:
- 90
- Vapour pressure:
- 0.018 Pa
- Remarks on result:
- other: determined experimentally
Reference
- At the first measurement of the experiment at 105 °C the test item melted to a red mass. During the two further measurements the test item became darker. This can be a sign of decomposition
and to avoid bias these measurements were not used for calculation.
- 3 out of 6 experiments showed relevant and reproducible weight loss. All evaluated experiments showed good reproducibility, giving relative standard deviations of less than 27 % and perfect correlation. Therefore, the result of the test can be considered valid.
- The vapour pressure was calculated using the following equation: p=(m/K*A*t)*sqrt(2*pi*R*T/M).
- Where:
p: vapour pressure in Pa
m: weight loss in kg
t: time in s
A: area of aperture in m^2
K: correction factor
R: universal gas constant in J/Mol*K
T: temperature in K
M: molecular weight in kg/Mol
Description of key information
The vapour pressure of the test substance is calculated to be 2.28E-7 Pa at 20 °C and 6.05E-7 at 25 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 0 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.
