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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:
1999
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
no
Type of method:
buoyancy method
Type:
relative density
Density:
1 033.8 kg/m³
Temp.:
20 °C

The relative density of the substance was assessed using Mohr-Westphal balance at temperatures ranging from 20 °C to 190 °C. In the following table the experimental measurements of density at different temparatures are given:

Temperature [°C]

Density [kg/m3]

20.0

1033.8

40.1

1016.9

60.0

1002.1

80.0

986.1

100.1

969.9

130.0

946.9

160.0

922.4

190.0

897.6

The value for the density at 25 °C was calculated according to the Watson equation:

   r  =   A * (TC– T)B  + rC

 

    With constants for ditolylether: A = 54.94115 ; B = 0.4274744

    TC= critical temperature = 481.1 °C

    rC= critical density = 275.5 kg/m3

Conclusions:
The density of the test item was measured at 1033.8 kg/m3 at 20 °C.
Executive summary:

The density was determined using Mohr-Westphal balance which is in accordance with the EU method EC A.3 (buoyancy method). The density of the substance was measured at 1033.8 kg/m³ at 20 °C.

Description of key information

The density was determined using Mohr- Westphal balance, which is in accordance with the EU method EC A.3 (buoyancy method). The density of the sunstance was measured at 1033.8 kg/m³ at 20 °C.

Key value for chemical safety assessment

Relative density at 20C:
1.034

Additional information

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