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Environmental fate & pathways

Henry's Law constant

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Administrative data

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
Remarks:
Acceptable calculation method using measured physical chemical properties.

Data source

Reference
Reference Type:
other: REACH Guidance
Title:
Chapter R.16: Environmental Exposure Estimation, Version 2
Author:
European Chemicals Agency
Year:
2009
Bibliographic source:
Guidance on Information, Requirements, and Chemical Safety Assessment
Report date:
2009

Materials and methods

Principles of method if other than guideline:
Henry's Law constant was calculated using EQUATION R.16-4 (Henry = (VP*MW)/Solubility) in the REACH guidance R.16. Input values were vapour pressure (3.77E-2 Pa), and solubility (4.29E5 mg/L).
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
m-phenylenediamine
EC Number:
203-584-7
EC Name:
m-phenylenediamine
Cas Number:
108-45-2
Molecular formula:
C6H8N2
IUPAC Name:
m-phenylenediamine

Results and discussion

Henry's Law constant H
H:
0 Pa m³/mol
Temp.:
20 °C

Applicant's summary and conclusion

Conclusions:
Henry's Law constant: 9.50E-06 Pa-m3/mol
Executive summary:

Henry's Law constant was calculated for the test substance to be 9.50E-06 Pa-m3/mol using EQUATION R.16-4 (Henry = (VP*MW)/Solubility) in the REACH guidance R.16. Input values were vapour pressure (3.77E-2 Pa), and solubility (4.29E5 mg/L).