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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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
GLP compliance:
not specified
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
1.273 other: relative density is dimensionless
Temp.:
20 °C
Type:
density
Density:
1.273 g/cm³
Temp.:
20 °C

Calibration

Pycnometer empty: 39.3390 g

Pycnometer filled with water (20 °C): 89.2495 g

Weight of water: 49.9105 g

 

Calculated pycnometer volume: 49.9105 g / 0.9982 g/mL = 50.0005 mL

 

Density measurement of the test item

 

First measurement

W0 = 39.3390 g

WP = 51.0989 g

Test item weight = 51.0989 g - 39.3390 g = 11.7599 g

WT = 86.4568 g

Toluene weight = 86.4568 g - 51.0989 g = 35.3579 g

Toluene volume = 35.3579 g / 0.8668 g/mL = 40.79130 mL

Test item volume = 50.0005 mL - 40.79130 mL = 9.20920 mL

Test item density = 11.7599 g / 9.20920 mL =1.2770 g/mL

 

Second measurement

W0 = 39.3390 g

WP = 49.4570 g

Test item weight = 49.4570 g - 39.3390 g = 10.1180 g

WT = 85.8846 g

Toluene weight = 85.8846 g - 49.4570 g = 36.4276 g

Toluene volume = 36.4276 g / 0.8668 g/mL = 42.02538 mL

Test item volume = 50.0005 mL - 42.02538 mL = 7.97512 mL

Test item density = 10.1180 g / 7.97512 mL =1.2687 g/mL

 

Third measurement

W0 = 39.3390 g

WP = 48.7331 g

Test item weight = 48.7331 g - 39.3390 g = 9.3941 g

WT = 85.6785 g

Toluene weight = 85.6785 g - 48.7331 g = 36.9454 g

Toluene volume = 36.9454 g / 0.8668 g/mL = 42.62275 mL

Test item volume = 50.0005 mL - 42.62275mL = 7.37775 mL

Test item density = 9.3941 g / 7.37775 mL =1.2733 g/mL

 

Mean density: 1.2730 g/mL

Standard deviation: 4.16E-3 g/mL

Relative standard deviation: 0.33%

 

The relative density of the substance at 20 °C compared to water at 4 °C was not reported, but can be calculated according to EU Test guideline A.3 for relative density Regulation (EC) No 440/2008 and ECHA Guidance on Information Requirements and Chemical Safety Assessment, Chapter R.7a: Endpoint specific guidance.

The density of water at 4 °C (at which temperature, water has its maximum density) is 999.975 kg/m³ (0.999975 g/cm³).

The relative density of the test substance is obtained as follows:

D420 = density of test item at 20 °C / density of water at 4 °C = 1.2730 g/cm³ / 0.999975 g/cm³ = 1.2730

Description of key information

Relative density: 1.273 at 20 °C (OECD Guideline 109, pycnometer method)

Key value for chemical safety assessment

Relative density at 20C:
1.273

Additional information