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Henry's law constant
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
supporting study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
An accepted calculation method is used.

Data source

Materials and methods

Principles of method if other than guideline:
Ratio vapour pressure and water solubility is used
GLP compliance:

Test material

Constituent 1
Chemical structure
Reference substance name:
N-C16-18-alkyl-(evennumbered, C18 unsaturated) trimethylpropane-1,3-diamine
EC Number:
Cas Number:
Molecular formula:
Not applicable
N-C16-18-alkyl-(evennumbered, C18 unsaturated) trimethylpropane-1,3-diamine
Test material form:
Details on test material:
- Name of test material (as cited in study report): Diamine methylated
- Substance type:Amber liquid
- Physical state:Liquid
- Storage conditions of test material:At room temperature
- Content (certified): 100% (UVCB–Substance)
- Batch/Lot number:211401A Morris
- Expiration date of the lot/batch:24 March 2018
Specific details on test material used for the study:
Vapour pressure and water solubility were determined with specific test material (see chapter 4)

Results and discussion

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

Applicant's summary and conclusion

An acceptable calculation is used to derive the Henry's Law constant. The water solubility was determined using the CMC as the test substance is a surfactant. The vapour pressure was determined using the A4 method.
Executive summary:

An Henry's Law constant was calculated of 0.001205 Pa m3/mol using the ratio of the measured vapour pressure and observed CMC of the test substance.