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Environmental fate & pathways

Henry's Law constant

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Administrative data

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Reference
Endpoint:
Henry's law constant
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Qualifier:
no guideline required
GLP compliance:
no
H:
10.6 Pa m³/mol
Atm. press.:
35 Pa

Henry's law constant, H, is calculated from the following equation:

H = P(VP) / S(W) [m^3 Pa / mol], P(VP): Vapour pressure [Pa], S(W): Water solubility [mol/m^3]

This equation is the method of choice when reliably measured values of P(VP) and S(W) are available, which is the case for 3'-(trifluoromethyl)acetophenone:

Water solubility at 25°C: 620 g / m3

Vapour pressure at 25°C: 35 Pa

Conclusions:
The Henrys law constant was caluclated to be 10.6 Pa m³/mol.
Executive summary:

Henry's law constant, H, is calculated from the following equation:

H = P(VP) / S(W) [m^3 Pa / mol], P(VP): Vapour pressure [Pa], S(W): Water solubility [mol/m^3]

This equation is the method of choice when reliably measured values of P(VP) and S(W) are available, which is the case for 3'-(trifluoromethyl)acetophenone. he water solubility at 25 °C was 620 g/m³; Vapour pressure at 25 °C 35 Pa. Based on these results Henrys law constant was calculated to be 10.6 Pa m³/mol.

Description of key information

Henry's law constant, H, is calculated from the following equation:

H = P(VP) / S(W) [m^3 Pa / mol], P(VP): Vapour pressure [Pa], S(W): Water solubility [mol/m^3]

This equation is the method of choice when reliably measured values of P(VP) and S(W) are available, which is the case for 3'-(trifluoromethyl)acetophenone. he water solubility at 25 °C was 620 g/m³; Vapour pressure at 25 °C 35 Pa. Based on these results Henrys law constant was calculated to be 10.6 Pa m³/mol.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
10.6
at the temperature of:
25 °C

Additional information