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Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 2018-01-03 to 2018-02-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
Deviations:
no
Qualifier:
according to
Guideline:
other: CIPAC Handbook Volume F, MT 3.2, "Determination of Specific Gravity or Density of Liquids or Solids"
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method
Test material information:
Composition 1
Key result
Type:
relative density
Density:
1.488 other: dimensionless
Temp.:
20 °C

Table 1. Determination of water equivalent and volume at 20 ºC

Replicate

Weight of Empty Pycnometer

(x) (g)

Weight of Pycnometer with Water (y) (g)

Water Equivalent Weight

(y-x) (g)

Volume of the Pycnometer at 20 °C (mL)

V20= (y-x)/0.998 mL

1

42.9247

92.8263

49.9016

50.0016

2

41.7293

91.6320

49.9027

50.0027

 

Table 2. Determination of density of wetting solution

Replicate

Weight of Empty Pycnometer (x’)(g)

Weight of Pycnometer with Wetting Solution (y’) (g)

Weight of Wetting Solution

(y’-x’) (g)

Volume of Pycnometer (mL) at 20 °C

Density of Wetting Solution

(y’-x’)/V (g/mL)

1

42.9247

98.1040

55.1793

50.0016

1.1036

2

41.7293

95.9868

54.2575

50.0027

1.0851

 

Table 3. Determination of volume of wetting solution

Replicate

Weight of Empty Pycnometer (g)

Weight of Pycnometer with Test Item and Wetting Solution (g)

Weight of Pycnometer with Test Item (g)

Weight of Test Item (g)

Volume of Wetting Solution (mL)

1

42.9247

105.8678

73.0740

30.1493

29.7153

2

41.7293

104.6966

73.7855

32.0562

28.4869

 

Table 4. Determination of relative density of the test item

Replicate

Weight of Test Item (g)

Volume of Pycnometer (mL)

Volume of Wetting Solution (mL)

Density of Test Item (g/mL)

Mean Density (g/mL)

(±) SD

RSD
(%)

1

30.1493

50.0016

29.7153

1.4862

1.4881

0.003

0.20

2

32.0562

50.0027

28.4869

1.4899

 SD = Standard Deviation, RSD = Relative Standard Deviation

Conclusions:
The relative density of the test item was determined to be 1.4881 at 20 °C.
Executive summary:

A study was conducted according to OECD TG 109, Regulation (EC) No 440/2008 method A.3, OPPTS 830.7300 and CIPAC Handbook Volume F, MT 3.2 to determine the relative density of the test item. Using Tween 80 as wetting solution the volume of the pycnometer and the density of the weting solution were determined. Using these results, the density of the test item was determined in duplicate. Using the pycnometer method the density was determined to be 1.4881 ± 0.0030 g/cm³ at 20 ± 0.5 °C and the relative density 1.4881 with respect to water at 4 °C, respectively.

Description of key information

The relative density of the test item was determined to be 1.4881 at 20 °C.

Key value for chemical safety assessment

Relative density at 20C:
1.488

Additional information

A study was conducted according to OECD TG 109, Regulation (EC) No 440/2008 method A.3, OPPTS 830.7300 and CIPAC Handbook Volume F, MT 3.2 to determine the relative density of the test item. Using Tween 80 as wetting solution the volume of the pycnometer and the density of the weting solution were determined. Using these results, the density of the test item was determined in duplicate. Using the pycnometer method the density was determined to be 1.4881 ± 0.0030 g/cm³ at 20 ± 0.5 °C and the relative density 1.4881 with respect to water at 4 °C, respectively.