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Diss Factsheets

Physical & Chemical properties

Density

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
density, other
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Data is from experimental study report
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Qualifier:
according to guideline
Guideline:
other: the method adapted from ASTM D 854-02
GLP compliance:
no
Type of method:
pycnometer method
Key result
Type:
density
Density:
1.225 g/cm³
Temp.:
20 °C
Remarks on result:
other: 972.5 hPa

By Pyknometer Method (for water insoluble solids)

Method Details

Observations

Test temperature (°C)

20°C

20°C

Density of water at

test temperature

g/cm³ (ρtw)

 

0.9982

0.9982

Atmospheric

pressure (in hPa)

 

971.5

972.5

Weight of empty dry

pyknometer (Wp)

 

29.259

29.034

Weight of pyknometer

filled with water (WA)

 

78.625

78.459

Weight of

pyknometer + test

Item (WPS)

 

33.737

33.482

Weight of pyknometer

+test Item+ water

(WB)

 

63.199

63.259

For water insoluble solids:

Specific gravity, SG = Wo/W0 + (WA-WB)

Where,

W0 = weight of test chemical in g = WPS - WP

WPS = weight of pycnometer + test chemical

WP = weight of empty pycnometer

WA = weight of pycnometer filled with water

WB = weight of pycnometer filled with water and test chemical

For reporting the density of test chemical multiply the specific gravity of that test chemical with the density of

water at that degree Celsius.

Density (g/cm3) = GS X ρtw

Where,

GS = Calculated specific gravity of that test chemical

ρtw = density of water at test temperature i.e. 20 °C (referred from the Table 1 of the IS 4730)

 

2nd Calculation

1st Calculation

2nd Calculation

Wo=WPS-WP

3.4210

3.6580

(WA-WB)

-0.5740

-0.7380

Specific Gravity= WO/[WO+(WA-WB)]

1.2016

1.2527

Specific Gravity Gs

1.2016

1.2527

Density(g/cm³)

1.1994

1.2504

Mean Density (g/cm³)

 

1.2249
Conclusions:
The mean density of test chemical was determined to be 1.2249 g/cm³ at 20 °C and 972.5 hPa.
Executive summary:

The density of test chemical was determined following OECD guideline 109 and according to the method adapted from ASTM D 854-02. The experiment was conducted by using pycnometer. The mean density of test chemical was determined to be 1.2249 g/cm³ at 20 °C and 972.5 hPa.

Description of key information

Based on the available data from study report, the density of test chemical was determined following OECD guideline 109 and according to the method adapted from ASTM D 854-02. The experiment was conducted by using pycnometer. The mean density of test chemical was determined to be 1.2249 g/cm³ at 20 °C and 972.5 hPa.

Key value for chemical safety assessment

Relative density at 20C:
1.225

Additional information

Based on the available data from study report, the density of test chemical was determined following OECD guideline 109 and according to the method adapted from ASTM D 854-02. The experiment was conducted by using pycnometer. The mean density of test chemical was determined to be 1.2249 g/cm³ at 20 °C and 972.5 hPa.