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Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
January 19th, 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
Adopted 27th July 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
no
Type of method:
pycnometer method
Type:
relative density
Density:
1.429
Temp.:
20 °C

Results of density measurement

Parameter 1st determination 2nd determination Average
Weight of empty pycnometer (Zpyc) 19.45145 18.08027 -
Weight of pycnometer with test substance 30.07351 25.42683 -
Weight of solid test substance (Z1) 10.62206 7.34656 -
Weight of pycnometer with sample and n-heptane (Z3) 42.2196 39.41263 -
Weight of pycnometer with n-heptane (Z2) 36.7406 35.5428 -
Density of n-heptane (ρliq) 0.68386 0.68359 0.68373
Density of solid substance (ρ) 1.413 1.4446 1.4288
Relative density of solid substance (D420) - - 1.4288

Note: Standard deviation of relative density is 0.028 and was calculated from variation range.

Conclusions:
Relative density: 1.429, at 20 °C
Executive summary:

The density of the test substance was measured using the pycnometer method. The procedure was performed according to the EU Method A.3 and according to the OECD guideline 109. The density was calculated from the difference in weight between the full and empty pycnometer and its known volume. The relative density was calculated as a ratio of densities of the substance at 20 °C and water at 4 °C.

Conclusion

Relative density: 1.429, at 20 °C

Description of key information

Relative density: 1.429, at 20 °C

Key value for chemical safety assessment

Relative density at 20C:
1.429

Additional information

Pycnometer method - OECD 109