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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
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Qualifier:
according to guideline
Guideline:
other: IS 4730 : 1994 (Reaffirmed 2010)
GLP compliance:
no
Type of method:
pycnometer method
Key result
Type:
density
Density:
0.966 g/cm³
Temp.:
20 °C
Remarks on result:
other: at 965.0 hPa.

S. No.

Method Details

Observed Values

1stObservation

  2ndObservation

1.                   

Guideline

OECD 109

 

 

2.                   

Method

IS 4730 : 1994 (Reaffirmed 2010) –

Method for Determination of Density of Liquids (First Revision)

3.                   

Principle of Method

Determination of the mass at a given temperature of a volume of the material contained in a density bottle (pyknometer) and determination of the volume of the latter by determining the mass of the corresponding volume of water at the same temperature. The density is obtained by dividing the mass of material by its volume.

 

 

4.                   

Test temperature    

(°C)

20oC

20oC

5.                   

Atmospheric pressure

(hPa)

964.8 hPa

965.2 hPa

6.                   

Weight of empty dry pyknometer(X)

g

 29.056

 29.429

7.                   

Weight of pyknometer + test item(Y)

g

 77.234

 77.425

8.                   

Apparent mass of test item(M1)

(M1= Y - X)g

 48.178

 47.996

9.                   

Weight of pyknometer + water(Z)

g

 78.852

 78.999

 10

Apparent

mass of water (M2)

 (M2 = Z - X) g  49.796 49.57  
 11

Buoyancy

correction (A)

A = (*ρat × M2)   0.0581  0.0578
 12

Density of

water** at test

temperature

 g/cm³ (ρtw)  0.9982  0.9982

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

CALCULATIONS:

FOR LIQUIDS

Density = (M1+A)/ (M2+A) X ρtw

1st calculated density

 

2nd calculated density

48.2361

____________ X 0.9982 =   0.9658 g/cm³

49.8541

48.0538

____________ X 0.9982 = 0.9665 g/cm³

49.6278

Average density

= 0.9661 g/cm³

Conclusions:
The density of test chemical was determined following OECD Guideline 109 and according to the IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of test chemical was determined to be 0.9661 g/cm³ at 20°C and 965.0 hPa.
Executive summary:

The density of test chemical was determined following OECD Guideline 109 and according to the IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of test chemical was determined to be 0.9661 g/cm³ at 20°C and 965.0 hPa.

Description of key information

On the basis of available data from study report,the density of test chemical was determined following OECD Guideline 109 and according to the IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of test chemical was determined to be 0.9661 g/cm³ at 20°C and 965.0 hPa.

Key value for chemical safety assessment

Relative density at 20C:
0.966

Additional information

On the basis of available data from study report,the density of test chemical was determined following OECD Guideline 109 and according to the IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of test chemical was determined to be 0.9661 g/cm³ at 20°C and 965.0 hPa.

In a supporting studies from handbooks and authoritative database, the density of test chemical was determined to be 0.954 gm/cm3 at various temperatures i.e, 27.5°C, 25°C and 20°C, respectively.

Additional study from authoritative database indicates the density of test chemical as 0.9723 at 20°C.

In another study from authoritative database, the density of test chemical was determined to be 0.971 g/cm3.

From the available data from predicted database, the density of test chemical was estimated to be 0.940±0.06 g/cm3 at 20°C and 1013.25 hPa.

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