Registration Dossier
Registration Dossier
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EC number: 203-455-5 | CAS number: 107-03-9
Henry's Law constant
Administrative data
Link to relevant study record(s)
- Endpoint:
- Henry's law constant
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Study period:
- Not applicable
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Justification for type of information:
- Value calculated according to equation specified in REACH guidance.
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Henry's Law Constant equation: (vapour pressure*molecular weight)/(water solubility*1000)
- GLP compliance:
- no
- H:
- 829.74 Pa m³/mol
- Temp.:
- 25 °C
- Atm. press.:
- 1 013.3 hPa
- Remarks on result:
- other: Standard temperature and pressure assumed.
- Conclusions:
- The Henry's Law constant for propane-1-thiol has been calculated to be 829.74 Pa/m3.mol.
- Executive summary:
This equation for calculating the Henry's Law Constant is indicated in the Guidance on information requirements and chemical safety assessment (IR & CSA) Chapter 16 "Environmental exposure estimate" (Equation R.16-4) and is therefore considered an appropriate technique. The calculated value is considered suitable for use for this endpoint.
Reference
Description of key information
The Henry's Law constant for propane-1-thiol has been calculated to be 829.74 Pa-m3/mol at 25°C.
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 829.74
- at the temperature of:
- 25 °C
Additional information
This equation for calculating the Henry's Law Constant is indicated in the Guidance on information requirements and chemical safety assessment (IR & CSA) Chapter 16 "Environmental exposure estimate" (Equation R.16-4) and is therefore considered an appropriate technique. The calculated value is considered suitable for use for this endpoint.
This result indicates that propane-1-thiol is expected to volatilise rapidly from the aquatic environment.
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