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Diss Factsheets

Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
The study was conducted between the 27 November 2017 and 29 November 2017.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Specific details on test material used for the study:
Lot Number 2161004
Purity 99.41%
Description White to light yellow flakes, with characteristic odour
Expiry date 31/01/2018
Key result
Type:
relative density
Density:
0.987 other: dimensionless
Temp.:
20 °C

Determining the Density of the Immersion Liquid

 

Mass of Empty Pycnometer (g)

24.07

Volume of Pycnometer (ml)

25.3

Mass water & Pycnometer (g)

49.34

Density of Water (g/cm3) (rW,t)

0.998

Mass of IL & Pycnometer (g)

48.44

Mass IL in Pycnometer (g) (m1)

24.37

Calculated Density of IL (g/cm3)

0.963

Density of IL (kg/m3)

963

 

Determining the density of the sample

Run Number

1

2

Mass of Empty Pycnometer (g)

24.07

24.07

Mass of Sample & Pycnometer (g)

31.33

31.76

Mass of Sample added to empty Pycnometer (g) ms

7.25

7.69

Mass of Sample, Pycnometer & immersion liquid

48.64

48.62

Mass of immersion liquid added (g) m2

17.31

16.85

Calculated Density of Sample (g/cm3)

0.989

0.985

Density of Sample (kg/m3)

989

985

Mean Result (kg.m-3)

987

Mean Result :

Relative density: 0.987

Sample density: 987 kg.m-3 @ 20°C

Conclusions:
The relative density was found to be 0.987 at 20°C.
Executive summary:

Particle Size Analysis using small volume (wet) module (SVM)

Average (µm)

Volume weighted mean

548.033

Median (d.50)

494.609

Mode

789.551

MMAD (Mass Median Aerodynamic Diameter)

491.383

10 % of material is <

30.759

50 % of material is <

494.609

90 % of material is <

1197.050

by volume of sample was seen to be < 10.00 µm

2.45 %

Manual sieve analysis indicated that 27.7 % by weight of the sample had a particle size of < 2000 µm.  A subsequent laser diffraction analysis on the < 2000 µm sample produced the results  above

A3 - Relative Density (D20  )

4

0.987 (mean of 2 runs) (987. kg.m-3 @ 20°C)

Description of key information

Determining the density of the sample

Run Number

1

2

Mass of Empty Pycnometer (g)

24.07

24.07

Mass of Sample & Pycnometer (g)

31.33

31.76

Mass of Sample added to empty Pycnometer (g) ms

7.25

7.69

Mass of Sample, Pycnometer & immersion liquid

48.64

48.62

Mass of immersion liquid added (g) m2

17.31

16.85

Calculated Density of Sample (g/cm3)

0.989

0.985

Density of Sample (kg/m3)

989

985

Mean Result (kg.m-3)

987

Mean Result :

Relative density: 0.987

Sample density: 987 kg.m-3 @ 20°C

Key value for chemical safety assessment

Relative density at 20C:
0.987

Additional information