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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:
From 15 July 2015 to 30 September 2015
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Remarks:
Study performed according to recognized international guidelines. No deviation from the guideline was observed in the study. Experimental details lacking.
Reason / purpose:
reference to same study
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Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
October 2, 2012.
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
Regulation (EC) 440/2008
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
Version / remarks:
June 2002
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
air comparison pycnometer (for solids)
Specific details on test material used for the study:
4-chloroformylphthalic anhydride
The test substance was reduced by grinding using a mortar and dried in a desiccator under vacuum
using silicagel as the drying agent at 19.8 ± 0.3°C for 70 hours.
Dynamic viscosity of test material:
not applicable (solid)
Key result
Type:
relative density
Density:
1.6 other: relative density has no dimension
Temp.:
20 °C

Summary of measurements:

   Assay 1  Assay 2
 Sample mass (g) 16.096   17.179

Mean sample volume (n=4) (cm3)

 10.024  10.726
 Density (g/cm3)  1.606  1.602
 Mean density (g/cm3)     1.60

The individual measurements were obtained with an accuracy of < 0.02 g/cm3. According to the guideline, the density of the test substance is given as the mean value.

The relative density (D20/4) is the ratio between the mass of a volume of a substance to be examined, determined at 20°C, and the mass of the same volume of water, determined at 4°C (ρ H2O = 1000 kg/ m3, CRC Handbook of Chemistry and Physics, 1981).

Conclusions:
The density of the test item (at 20°C) is 1.60 g/cm3. Its relative density (D20/4) is 1.60.
Executive summary:

The density of the test item was determined according to recognized guidelines (OECD Guideline 109, EU Method A.3 and EPA OPPTS 830.7300) and under GLP. The gas comparison pycnometer method was used, with helium. No deviation has been recorded during the test.

Measurements were recorded for two independant samples, and four determinations of sample volume for each, at 20°C. The average value was retained. Relative density (D20/4) was calculated considering a density of 1.000 g/cm3 for water at 4°C.

The density of the test item (at 20°C) was determined to be 1.60 g/cm3. Its relative density (D20/4) is 1.60.

Description of key information

The density of the test item (at 20°C) is 1.60 g/cm3. Its relative density (D20/4) is 1.60.

Key value for chemical safety assessment

Relative density at 20C:
1.6

Additional information

The density of the test item was determined according to recognized guidelines (OECD Guideline 109, EU Method A.3 and EPA OPPTS 830.7300) and under GLP. The gas comparison pycnometer method was used, with helium. No deviation has been recorded during the test, but experimental details are lacking.