Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
According to REACH Annex VII, section 7.5., if the melting point is between 200°C and 300°C, a value based on a measurement or a recognised calculation method is sufficient.
Copper dihydroxide decomposed before the melting point was reached (Marsh, 2000). Decomposition took place at an onset temperature of 229°C. Accordingly, a calculation has been done to estimate the vapour pressure of copper dihydroxide at 25°C.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2020
Report Date:
2020

Materials and methods

Principles of method if other than guideline:
Computer-based estimation method, MPBPWin, version 1.44, US Environmental Protection Agency (2000).

The estimation method described is designed to be compatible with the following internationally accepted guidelines and recommendations:
- Commission Regulation (EC) No 440/2008 of 30 May 2008, Part A: Methods for the determination of physico-chemical properties.
- OECD Guidelines for Testing of chemicals.

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Vapour pressure
Key result
Temp.:
25 °C
Vapour pressure:
0 Pa

Any other information on results incl. tables

Inorganic compounds were not included in the training data set for the methodology utilised in the estimation program, and are stated to be outside the estimation domain. As the test item is an inorganic compound, the estimated value for the test item has to be treated with caution.

Applicant's summary and conclusion

Conclusions:
The vapor pressure of copper dihydroxide is estimated to be 1.96E-16 Pa at 25°C.
Executive summary:

The vapor pressure of copper dihydroxide is estimated to be 1.96E-16 Pa at 25°C.