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Physical & Chemical properties

Density

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Reference
Endpoint:
density
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Determination in-house at PFW (non-GLP).
Qualifier:
no guideline followed
Principles of method if other than guideline:
The density of the substance has been determined in its molten form. Therefore measuring-cylinders of 100 and 50 ml were weighted and subsequently filled with the molten substance (of 70 degrees Celsius) exactly to 100 or 50 ml. The measuring-cylinders with the substance were weighted again and the differences in weight were determined. This was done at room temperature without additional shaking of the measuring-cylinders. From the differences in weight and the volumes of the measuring-cylinders the average density of the molten substance was determined.
GLP compliance:
no
Type of method:
other: measuring-cylinders
Remarks:
measuring differences in weight and the volumes of measuring-cylinders with and without test item.
Key result
Type:
density
Density:
960 kg/m³
Temp.:
70 °C
Conclusions:
The relative density will be between the bulk density and its density in molten form: 600 < D < 960 kg/m3.
Executive summary:

The density of the substance has been determined in its molten form. Therefore measuring-cylinders of 100 and 50 ml were weighted and subsequently filled with the molten substance (of 70 degrees Celsius) exactly to 100 or 50 ml. The measuring-cylinders with the substance were weighted again and the differences in weight were determined. This was done at room temperature without additional shaking of the measuring-cylinders. From the differences in weight and the volumes of the measuring-cylinders the average density of the molten substance was determined: 960 kg/m3.

The relative density of the substance will be between its bulk density (see the other study record) and its density in molten form: 600 < D < 960 kg/m3.

Description of key information

The density of the substance has been determined by measuring the differences in weight and the volumes of measuring-cylinders when empty and when filled with the test item in its molten form, based on an in-house method. The relative density and the bulk density are 960 and 600 g/L respectively.

Key value for chemical safety assessment

Relative density at 20C:
0.96

Additional information

The difference in bulk and relative density differ considerable and is due to the production process of the test item. Since the test item melts around 54 °C, the relative density can be determined by melting the test item prior to the determination. Strictly speaking, the relative density should be between 600 and 960 g/L, but it should be closer to the molten density than to the bulk density. Hence the 960 g/L has been taken forward in the registration as the relative density. The relative density is less than one and the water-solubility of the test item is very low. Consequently, the substance is likely to float, which is relevant information for the risk assessment.