Registration Dossier
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EC number: 406-250-0 | CAS number: 72619-32-0 HALOXYFOP R-(+)-ME HERBICIDAL CHEMICAL
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:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The Henry's Law constant was calculated using the following equation:
Henry's Law constant = (Vapour pressure * Molecular weight)/Water solubility - GLP compliance:
- no
- Key result
- H:
- 0.001 Pa m³/mol
- Temp.:
- 20 °C
- Atm. press.:
- 0 Pa
- Remarks on result:
- other: Unbuffered water
- Key result
- H:
- 0.001 Pa m³/mol
- Temp.:
- 20 °C
- Atm. press.:
- 0 Pa
- Remarks on result:
- other: pH 5
- Key result
- H:
- 0.001 Pa m³/mol
- Temp.:
- 20 °C
- Atm. press.:
- 0 Pa
- Remarks on result:
- other: pH 7
- Key result
- Temp.:
- 20 °C
- Atm. press.:
- 0 Pa
- Remarks on result:
- other: pH 9
- Remarks:
- Not calculated due to rapid hydrolysis
- Conclusions:
- Henry's Law constant (Unbuffered water): 1.1E-3 Pa m³/mol
Henry's Law constant (pH 5): 1.4E-3 Pa m³/mol
Henry's Law constant (pH 7): 1.2E-3 Pa m³/mol
Henry's Law constant (pH 9): Not calculated due to rapid hydrolysis - Executive summary:
The Henry's Law constant is an indicator of the volatility of a solute from a dilute aqueous solution. The Henry's law constants for the test substance at 20 °C were calculated from previously measured values of vapor pressure and water solubility.
Henry's Law constant (Unbuffered water): 1.1E-3 Pa m ³/mol
Henry's Law constant (pH 5): 1.4E-3 Pa m ³/mol
Henry's Law constant (pH 7): 1.2E-3 Pa m ³/mol
Henry's Law constant (pH 9): Not calculated due to rapid hydrolysis
Reference
Description of key information
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 0.001
Additional information
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