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Physical & Chemical properties

Density

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Reference
Endpoint:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2011-05-23
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Qualifier:
equivalent or similar to
Guideline:
EU Method A.3 (Relative Density)
Principles of method if other than guideline:
The density of the liquid is measured by a pycnometer made of glass with a close-fitting ground glass stopper with a capillary tube through it, so that air bubbles may escape from the apparatus. The device enables a liquid´s density to be measured accurately by reference to an appropriate working fluid using an analystical balance. The flask is weighed empty and full of a liquid whose specific gravity is desired, the specific gravity of the liquid can be then calculated.
GLP compliance:
no
Type of method:
pycnometer method
Key result
Type:
density
Density:
0.898 g/cm³
Temp.:
20 °C
Conclusions:
Using the pycnometer method, the density of tert-Butylperoxyneodecanoat (TBPND) was determined to be 0.898 g/cm³ at 20 ± 0.2 °C.
Executive summary:

The density of the test substance tert-Butylperoxyneodecanoat (TBPND) (~ 98 % purity) was measured by a 25 mL pycnometer at temperature of 20 + /- 0.2°C. The calculated result obtained indicated of a density of 0.898 g/cm³ for TBPND.

Description of key information

Using the pycnometer method, the density of TBPND 75 % inisododecane was determined to be 0.861 g/cm³ at 20 ± 0.2 °C.

 

Key value for chemical safety assessment

Relative density at 20C:
0.898

Additional information

The density of the test substance tert-Butylperoxyneodecanoat (TBPND) (~ 98 % purity) was measured by a 25 mL pycnometer at temperature of 20 + /- 0.2 °C. The calculated result obtained indicated of a density of 0.898 g/cm³ for TBPND.