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Physical & Chemical properties

Density

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Reference
Endpoint:
bulk density
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
20/8/2016 - 20/8/2016
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 guideline.
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Principles of method if other than guideline:
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.
GLP compliance:
no
Type of method:
pycnometer method
Key result
Type:
density
Density:
1.553 g/cm³
Temp.:
20 °C
Remarks on result:
other: Pressure = 964.5 hPa

OBSERVATIONS :

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

20

 

Density of water at test temperature; g/cm3tw)

 

0.9982

0.9982

 

Atmospheric pressure (in hPa)

-

964.4

964.6

 

Weight of empty dry pyknometer (Wp)

 

30.955

29.234

 

Weight of pyknometer filled with water (WA)

 

81.354

78.747

 

Weight of pyknometer + test Item (WPS)

 

35.980

34.274

 

Weight of pyknometer +test Item+ water (WB)

 

83.164

80.539

 

CALCULATIONS:

 

                Calculated values

1st Calculation

 2nd Calculation

Wo=WPS-WP

5.025

5.040

(WA-WB)

-1.810

-1.792

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

5.025/[5.025-1.810]

5.040/[5.040-1.792]

Specific Gravity; Gs

1.562

1.551

Density (g/cm3)

1.562 × 0.9982 =1.559

1.551 × 0.9982 =1.548

Mean Density (g/cm3)

1.553 g/cm3

Conclusions:
The mean density of the test chemical was determined to be 1.553 g/cm3 at 20° C and 964.5 hPa.
Executive summary:

The density of test chemical was determined following OECD guideline 109 and according to the method adapted from ASTMD 854-02. The mean density of the test chemical was determined to be 1.553 g/cm3 at 20° C and 964.5 hPa.

Description of key information

The density of test chemical was determined following OECD guideline 109 and according to the method adapted from ASTMD 854-02. The mean density of the test chemical was determined to be 1.553 g/cm3 at 20° C and 964.5 hPa.

Key value for chemical safety assessment

Relative density at 20C:
1.553

Additional information

The density of test chemical was determined following OECD guideline 109 and according to the method adapted from ASTMD 854-02. The mean density of the test chemical was determined to be 1.553 g/cm3 at 20° C and 964.5 hPa.

Other supporting studies from various reliable sources such as handbook also suggests that, the density of test chemical was observed to be 1.3556 g/cm3 at 25 °C.

As the data from lab has K1 reliability and the test was performed using OECD guideline which has the value of density as 1.553 g/cm3 at 20°C and 964.5 hPa, thus considered as key study for the chemical safety assessment.