1-(2,4-dichlorophenyl)ethan-1-one

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

21 February 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: CIPAC MT 3.2.1

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Key result

Type:

relative density

Density:

ca. 1.518 other: dimensionless

Temp.:

20 °C

Type:

density

Density:

ca. 1.518 g/cm³

Temp.:

20 °C

Results of density determination

Test No	Mass of empty pycnometer         mo	Mass of pycnometer with wáter         m1	Mass of pycnometer with immersing liquid,     m2	Mass of pycnometer with tested material     m3	Mass of pycnometer with tested material and immersing liquid,   m4	Density
	[g]	[g]	[g]	[g]	[g]	[g/ml]
1	24.1480	49.4092	49.4102	35.1672	53.1881	1.5172
2	24.1481	49.4094	49.4101	32.7327	52.3601	1.5190
					Average	1.518

As the difference between results was less than 0.03 g/ml; hence two trials were enough.

To calculate absolute density the following equation were used:

ρ = ((m3 - m0) / m3 - m0 + m2 - m4) ρx

ρ = density of the tested material at 20°C;

ρx = density of immersing liquid

To calculate relative density the following equation was used:

ρ204 = ρt / ρ4water

ρ = absolute density of tested material at 20°C, [g/ml];

ρ4water= density at 4°C temperature ca. 1.0000 g/ml;

ρ204 = relative density of the tested material, the absolute density in relation to water at 4°C.

Conclusions:

The average calculated relative density at 20°C temperature was 1.518.

Executive summary:

The density determination of the test item has been determined using the Gay-Lussac pycnometer in accordance with EEC Method A3 and CIPAC MT 3.2.1, following GLP. The method was based in measuring the mass of the substance occupying a unit volume at 20°C. The density is calculated by dividing the mass of the tested material by its volume. Results of density determination based on two trials. As the difference between results was less than 0.03 g/ml; hence two trials were enough. The average measured absolute density at 20ºC was 1.518 g/ml, and the average calculated relative density at 20°C temperature was 1.518.

Description of key information

Key study: Test method EU A.3. GLP study. The average calculated relative density of the tested material at 20°C temperature was 1.518.

Key value for chemical safety assessment

Relative density at 20C:

1.518

Additional information

Key study: The density determination of the test item has been determined using the Gay-Lussac pycnometer in accordance with EEC Method A3 and CIPAC MT 3.2.1, following GLP. The method was based in measuring the mass of the substance occupying a unit volume at 20°C. The density is calculated by dividing the mass of the tested material by its volume. Results of density determination based on two trials. As the difference between results was less than 0.03 g/ml; hence two trials were enough. The average measured absolute density at 20ºC was 1.518 g/ml, and the average calculated relative density at 20°C temperature was 1.518.