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Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2000
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
GLP compliance:
yes
Type of method:
pycnometer method
Type:
relative density
Density:
0.001 g/L
Temp.:
20 °C

 Pyncometer Weights (g)
Empty [A]  Filled with sample [C] Difference (m1) [C]-[A]
30.8420  83.9770  53.1350 
29.9224  82.7216  52.7992 
32.2972  86.1593  53.8621 
  Mean  53.265 

 Pyncometer Weights (g)
Empty [A]  Filled With Water [B]  Difference (m2) [B] - [A] 
30.8420  80.9698  50.1278 
29.9224  79.7377  49.8153 
32.2972  83.0993  50.8021 
  Mean  50.248 

The relative density is the ratio between the mass of a volume of the sample at 20°C, and the mass of the same volume of water, determined at 4°C. The relative density has no dimension and is given by the formula

D= (m1/m2)*p

where:

m1 is the apparent mass, in grams, of sample required to fill the flask at 20°C

m2 is the apparent mass, in grams, of water required to fill the flask at 20°C

p is the density of water at 20°C = 0.9982g/mL

Conclusions:
The relative density of the test material is given by: 1.058 at 20°C.

Description of key information

The relative density of the test material is given by: 0.001058 g/L at 20°C (EU Method A.3 (Relative Density)).

Key value for chemical safety assessment

Relative density at 20C:
1.058

Additional information

The density is calculated from the difference in weight between the full and empty pycnometer and its known volume.