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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 201-075-4 | CAS number: 78-00-2
Henry's Law constant
Administrative data
- Endpoint:
- Henry's law constant
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 985
Materials and methods
- Principles of method if other than guideline:
- No method detailed, supporting study
Test material
- Reference substance name:
- Tetraethyllead
- EC Number:
- 201-075-4
- EC Name:
- Tetraethyllead
- Cas Number:
- 78-00-2
- Molecular formula:
- C8H20Pb
- IUPAC Name:
- tetraethylplumbane
Constituent 1
Results and discussion
Henry's Law constant Hopen allclose all
- H:
- ca. 70 928 Pa m³/mol
- Temp.:
- 25 °C
- Remarks on result:
- other: Calculated from dimensionless Henry coefficient of about 30
- H:
- ca. 81 060 Pa m³/mol
- Temp.:
- 25 °C
- Remarks on result:
- other: Calculated from solubility and vapor pressure
Applicant's summary and conclusion
- Conclusions:
- The US EPA gives a dimensionless Henry's law constant (Cgas/Cwater) of approx 30 at 25°C. This equates to ca. 70928 Pa m³/mol using a calculation based on measurements of the phase equilibrium for water in gas concentrations of TEL over a temperature range 0 -37.5°C. At 25°C the gas in water ration is approx 30:1. An estimate of the Henry's Law constant via the water solubility (0.21 ppm) and the vapour pressure (0.38 mm Hg) at 25°C gives a similar value of ca.81060 Pa m³/mol
- Executive summary:
The US EPA gives a dimensionless Henry's law constant (Cgas/Cwater) of approx 30 at 25°C. This equates to ca. 70928 Pa m³/mol using a calculation based on measurements of the phase equilibrium for water in gas concentrations of TEL over a temperature range 0 -37.5°C. At 25°C the gas in water ration is approx 30:1. An estimate of the Henry's Law constant via the water solubility (0.21 ppm) and the vapour pressure (0.38 mm Hg) at 25°C gives a similar value of ca.81060 Pa m³/mol
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.
