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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

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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)
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Principles of method if other than guideline:
Calculation according to ECHA guidance R.16 (Equation R.16-4):Henry = VP x M / S
VP = vapor pressure (atm)
M = molecular weight (g/mol)
S = solubility (mg/L)


Key result
H:
0.153 Pa m³/mol
Remarks on result:
other: Calculated
Conclusions:
A Henry´s law constant of 0.153 Pa m^3/mol was calculated according to ECHA Guidance Chapter R.16

Description of key information

According to Annex VIII, no test is required for this endpoint. However, for PNEC calculation a Henry´s law constante of  0.153 Pa m^3/mol was calculated according to ECHA Guidance Chapter R.16 (2016).  

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.153
at the temperature of:
20 °C

Additional information