Selenium disulphide

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

05/02/2018 to 06/02/2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

not specified

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Specific details on test material used for the study:

No further details specified in the study report.

Dynamic viscosity of test material:

Not specified

Key result

Type:

relative density

Density:

2.442 other: dimensionless

Temp.:

20 °C

Key result

Type:

density

Density:

2 442 kg/m³

Temp.:

20 °C

Determining the Density of the Sample

Run Number	1	2
Mass of Empty Pycnometer (g)	24.08	24.08
Mass of Sample & Pycnometer (g)	32.67	33.12
Mass of Sample added to empty Pycnometer (g) ms	8.59	9.05
Mass of Sample, Pycnometer & immersion liquid	53.64	53.94
Mass of immersion liquid added (g) m2	20.98	20.81
Calculated Density of Sample (g/cm^3)	2.435	2.448
Density of Sample (kg/m^3)	2435	2448
Mean Result (kg.m^-3)	2442

 

Determining the Density of the Immersion Liquid

Mass of Empty Pycnometer (g)	24.08	Volume of Pycnometer (ml)	25.3
Mass water & Pycnometer (g)	49.34	Density of Water (g/cm^3) (ρw,t)	0.998
Mass of IL & Pycnometer (g)	48.45	Mass IL in Pycnometer (g) (m1)	24.37
Calculated Density of IL (g/cm^3)	0.963	Density of IL (kg/m^3)	963

 

Conclusions:

Mean Result :
Relative density (D204) 2.442
Sample density 2442 kg.m-3 @ 20°C

Executive summary:

The test is conducted to determine the relative density of a solid or liquid substance.

 

The relative density D²⁰₄ of solids or liquids is the ratio between the mass of a volume of substance to be examined, determined at 20 °C, and the mass of the same volume of water, determined at 4 °C. The relative density has no dimension.

 

The density, ρ, of a substance is the quotient of the mass, m, and its volume, v.

The density, ρ, is given, in SI units, in kg/m³.

 

For solids or liquids, pycnometers of various shapes and with known volumes may be employed. The density is calculated from the difference in weight between the full and empty pycnometer and its known volume. The tests are run at a constant temperature, preferably 20°C, and at least two measurements are generally performed.

 

The test is conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A3 and OECD Test Guideline 109.

 

Mean Result:

Relative density (D²⁰₄) 2.442

Sample density 2442 kg.m^-3 @ 20°C

Description of key information

Relative density (D²⁰₄) 2.442

Sample density 2442 kg.m^-3@ 20°C

Key value for chemical safety assessment

Relative density at 20C:

2.442

Additional information

The test is conducted to determine the relative density of a solid or liquid substance.

For solids or liquids, pycnometers of various shapes and with known volumes may be employed. The density is calculated from the difference in weight between the full and empty pycnometer and its known volume. The tests are run at a constant temperature, preferably 20°C, and at least two measurements are generally performed.

 

Mean Result:

Relative density (D²⁰₄) 2.442

Sample density 2442 kg.m^-3@ 20°C