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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Diss Factsheets

Administrative data

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.