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Henry's Law constant

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Reference
Endpoint:
Henry's law constant
Type of information:
experimental study
Adequacy of study:
key study
Study period:
approx. 1988
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to guideline
Guideline:
other: EPICS measurement/Batch air stripping
Principles of method if other than guideline:
EPICS = Equilibrium partitioning in closed systems (static headspace method)
GLP compliance:
no
H:
0.001 atm m³/mol
Temp.:
10 °C
Remarks on result:
other: 76 Pa m3/mol
H:
0.001 atm m³/mol
Temp.:
15 °C
Remarks on result:
other: 106 Pa m3/mol
H:
0.001 atm m³/mol
Temp.:
20 °C
Remarks on result:
other: 138 Pa m3/mol
H:
0.002 atm m³/mol
Temp.:
25 °C
Remarks on result:
other: 189 Pa m3/mol
H:
0.003 atm m³/mol
Temp.:
30 °C
Remarks on result:
other: 272 Pa m3/mol
Conclusions:
1,2,3,4-Tetrahydronaphthalene is a highly volatile substance with a Henry's Law constant of 138 Pa m3/mol at 20 °C.
Executive summary:

The Henry's Law constant of 1,2,3,4 -tetrahydronaphthalene was measured at temperatures betwen 10 and 30 ºC with the EPICS method (the batch air stripping method was used as confirmatory).

The results indicate that this chemical is highly volatile with obtained values between 0.0007 and 0.0027 atm m3/mol (10 ºC to 30 ºC).

Description of key information

The experimental Henry’s Law constant of 138 Pa m3/mol at 20 °C indicates high volatility of 1,2,3,4-tetrahydronaphthalene from surface waters.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
138
at the temperature of:
20 °C

Additional information