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Diss Factsheets

Physical & Chemical properties

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 data obtained using standard method of analysis
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Principles of method if other than guideline:
The mean density of test chemical was determined following OECD Guideline 109 and according to the method adapted from ASTM D 854-02.
GLP compliance:
no
Type of method:
pycnometer method
Key result
Type:
density
Density:
1.583 g/cm³
Temp.:
20 °C
Remarks on result:
other: Test carried out under normal atmospheric pressure 965.15 hPa.

TEST ITEM DESCRIPTION AND RESULTS :

Method Details

Observations

Remarks if, any

Guideline

OECD 109

1stReading

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 unit volume 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)

 

0.9982g/cm3

0.9982g/cm3

 

Atmospheric pressure (in hPa)

-

965.2 hPa

965.1 hPa

 

Weight of empty dry pyknometer (Wp)

 

29.267 g

30.734 g

 

Weight of pyknometer filled with water (WA)

 

79.179 g

81.033 g

 

Weight of pyknometer + test Item (WPS)

 

34.278 g

35.781 g

 

Weight of pyknometer +test Item+ water (WB)

 

80.802 g

83.101 g

 

CALCULATIONS:

 

                Calculated values

1st Calculation

 2nd Calculation

Wo=WPS-WP

34.278–29.267

= 5.011

35.781– 30.734

= 5.047

(WA-WB)

79.179 –80.802

 = -1.623

81.033 –83.101

= -2.068

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

= 5.011/[ 5.011+ (79.179 –80.802]

 

= 5.047/ [5.047+ (81.033 –83.101)]

Specific Gravity; Gs

1.479

 

1.694

Density (g/cm3)

1.479 × 0.9982

= 1.476 g/cm3

1.694 × 0.9982

= 1.690 g/cm3

Mean Density (g/cm3)

1.583 g/cm3
Conclusions:
The mean density of test chemical was determined by following OECD Guideline 109 and according to the method adapted from ASTM D 854-02. The mean density of the test chemical was determined to be 1.583 g/cm3 at 20° C and 965.15 hPa.
Executive summary:

The mean density of test chemical was determined by following OECD Guideline 109 and according to the method adapted from ASTM D 854-02.  The mean density of the test chemical was determined to be 1.583 g/cm3 at 20° C and 965.15 hPa.

Description of key information

The mean density of test chemical was determined by following OECD Guideline 109 and according to the method adapted from ASTM D 854-02.  The mean density of the test chemical was determined to be 1.583 g/cm3 at 20° C and 965.15 hPa.

Key value for chemical safety assessment

Relative density at 20C:
1.583

Additional information

The mean density of test chemical was determined by following OECD Guideline 109 and according to the method adapted from ASTM D 854-02.  The mean density of the test chemical was determined to be 1.583 g/cm3 at 20° C and 965.15 hPa.