Registration Dossier

Administrative data

Endpoint:
relative density
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Density estimated using the formula recommended in the REACH Guidance, Chapter R.7A, e.g. Abraham and McGowan (1987).

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
The use of characteristic volumes to measure cavity terms in reversed phase liquid chromatography
Author:
Abraham and McGowan
Year:
1987
Bibliographic source:
Chromatographia 23:243-246
Reference Type:
review article or handbook
Title:
Densitites of vapours, liquids adn solids.
Author:
Nelken LH
Year:
1990
Bibliographic source:
In Lyman WJ, Reehl, WF and Rosenbatt DH (Eds.), Handbook of Chemical Property Estimation Methods, American Chemical Society, Washington, DC, pp 19.1-19.24.
Reference Type:
review article or handbook
Title:
Handbook for estimating physico-chemical properties of organic compounds.
Author:
Reinhard and Drefahl
Year:
1999
Bibliographic source:
New York: Wiley

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Density estimated using the formula recommended in the REACH Guidance, Chapter R.7A, e.g. Abraham and McGowan (1987).
GLP compliance:
no
Type of method:
other: estimated

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Density
Type:
relative density
Density:
2.63
Temp.:
20 °C

Any other information on results incl. tables

DecaB DE's characteristic volume was calculated using the atomic and bond contributions given in the REACH Guidance, Chapter R.7A. The relative density was calculated by dividing the molecular weight by its characteristic volume.

Applicant's summary and conclusion

Conclusions:
DecaBDE's calculated relative density (2.63 gm/cm3) indicates it will sink in water.
Executive summary:

DecaBDEs's characteristic volume was calculated to be 364.23 cm3/mol. The characteristic volume is closely correlated iwth molar volume. The REACH Guidance states that relative density can be predicted by the molecular weight divided by the molar volume. DecaBDE's relative density is calculated to be 2.63 gm/cm3 by this method. DecaBDE's water solubility is low (< the 50 g/L given in the REACH Guidance), and its calculated density indicates it will sink in water.