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Density

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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:
Experimental test result performed using standard OECD test guidelines
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Principles of method if other than guideline:
Determination of density of test chemical. The study was perforned in accordance with the OECD Guideline 109 (Density of Liquids and Solids and according to the method adapted from ASTM D 854-02.
GLP compliance:
no
Type of method:
pycnometer method
Key result
Type:
density
Density:
0.786 g/cm³
Temp.:
20 °C
Remarks on result:
other: at 971.2 hPa

TEST ITEM DESCRIPTION AND RESULTS

FOR SOLIDS:

By Pour Density and Tapped Density Method:

Method Details

Observations

Remarks if, any

Guideline

OECD 109

1st

Reading

2nd Reading

 

 

Method

Adapted from ASTM D854-02

 

 

Principle of method

The density of test item is determined by using pyknometer. It is the ratio of mass of the unitvolume of test item at a stated temperature to mass of the same volume of gas free distilled water at a stated temperature.

 

 

Test temperature (°C)

-

20 °C

20 °C

Density of water at

test temperature;

g/cm³ (ρtw)

-

0.9982

0.9982

Atmospheric

pressure (in hPa)

-

972.5

970.0

Weight of empty dry

pyknometer (Wp)

 

31.126

30.869

Weight of pyknometer filled with water (WA)

 

80.786

81.163

Weight of pyknometer + test Item (WPS)

 

41.227

39.015

Weight of pyknometer +test Item+ water (WB)

 

78.685

78.405

*ρat=density of air at 27°C and 760 mm Hg pressure=0.001168 g/cm³

**Density of water referred from the Table 1 of the was method.

 

 

CALCULATIONS:

FOR SOLIDS: By Pyknometer:

 

Calculated values

1st Calculation

2nd Calculation

Wo=WPS-WP

10.1010

8.1460

(WA-WB)

2.1010

2.7580

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

0.8278

0.7470

Specific Gravity; Gs

0.8278

0.7470

Density (g/cm³)

0.8263

0.7456

Mean Density (g/cm³)

0.7859

 

 

Conclusions:
The density of test chemical was determined following OECD guideline 109 and according to the method adapted from ASTM D 854-02. The mean density of the test item was determined to be 0.7859 g/cm³ at 20°C and 971.2 hPa.
Executive summary:

The density of test chemical was determined following OECD Guideline 109 (Density of Liquids and Solids) and according to the method adapted from ASTM D 854-02 using glass pyknometer. The mean density of test item was determined to be 0.7859 g/cm³ at 20°C and 971.2 hPa.

Description of key information

Based on the available data from study report,the density of test chemical was determined following OECD Guideline 109 (Density of Liquids and Solids) and according to the method adapted from ASTM D 854-02 using glass pyknometer. The mean density of test item was determined to be 0.7859 g/cm³ at 20°C and 971.2 hPa.

Key value for chemical safety assessment

Relative density at 20C:
0.786

Additional information

Based on the available data from study report,the density of test chemical was determined following OECD Guideline 109 (Density of Liquids and Solids) and according to the method adapted from ASTM D 854-02 using glass pyknometer. The mean density of test item was determined to be 0.7859 g/cm³ at 20°C and 971.2 hPa.