Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Data source

Materials and methods

Results and discussion

Applicant's summary and conclusion

Executive summary:

HENRY'S LAW CONSTANT (HLC) The HLC of C20/22 ATQ can be calculated from vapour pressure (IUCLID Section 4.6) water solubility (IUCLID Section 4.8). The Exposure assessment tool EUSES 2.1 recalculates the HLC of 3.6*E-3 Pa*m3*mol-1at 25 degree C to 1.7*E-3 Pa*m3*mol-1at the environmental temperature of 12 degree C. The dimensionless air-water partitioning coefficient is calculated to 7.4*E-7 m3/m3. The HLC shows that volatilisation of C20/22 ATQ from aqueous solutions is very low.