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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:
other: data compilation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: peer-reviewed compilation of Henry's Law constants; data also quoted in the web library of the National Institute for Standard and Technology (NIST)
Guideline:
other: Data complilation
H:
0.031 Pa m³/mol
Temp.:
20 °C
Atm. press.:
101 325 Pa
Remarks on result:
other: Berdnikov and Bazhin [1970]
H:
0.03 Pa m³/mol
Temp.:
20 °C
Atm. press.:
101 325 Pa
Remarks on result:
other: Palmer et al. [1985]
H:
0.033 Pa m³/mol
Temp.:
20 °C
Atm. press.:
101 325 Pa
Remarks on result:
other: Wagman et al. [1982]

Berdnikov VM and Bazhin NM (1970). Oxidation-reduction potentials of certain inorganic radicals in aqueous solutions, Russ. J. Phys. Chem., Engl. Transl., 44, 395 -398.

Palmer DAR, Ramette RW, and Mesmer RE (1985). The hydrolysis of iodine, Equilibria at high temperatures, J. Nucl. Mater., 130, 280 -286.

Wagman DD, Evans WH, Parker VB, Schumm RH, Halow I, Bailey SM, Churney KL, and Nuttall RL (1982). The NBS tables of chemical thermodynamic properties; Selected values for inorganic and C1 and C2 organic substances in SI units., J. Phys. Chem. Ref. Data, 11, suppl. 2.

Conclusions:
The influence of the Henry's Law constant on the partition coefficent is negligible. Nevertheless the highest value of the three presented values was chosen as worst case assumption.
The Henry’s law constants for I2 at 20 °C and 101325 Pa were 0.03059, 0.02961, 0.03257 pa m3/mol determined by Berdnikov and Bazhin [1970], Palmer et al. [1985] and Wagman et al. [1982], respectively.

Description of key information

The Henry’s law constants for I2 at 20 °C and 101325 Pa were 0.03059, 0.02961, 0.03257 pa m3/mol determined by Berdnikov and Bazhin [1970], Palmer et al. [1985] and Wagman et al. [1982], respectively.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.033
at the temperature of:
20 °C

Additional information

The influence of the Henry's Law constant on the partition coefficent is negligible. Nevertheless the highest value of the three presented values was chosen as worst case assumption.