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Physical & Chemical properties

Density

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Reference
Endpoint:
density, other
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016-12-21 – 2016-12-22
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
Experimental result performed using standard methods of analysis
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Principles of method if other than guideline:
The density is calculated from the difference in weight between the full and empty pycnometer and its volume
GLP compliance:
no
Type of method:
pycnometer method
Type:
density
Density:
1.056 g/cm³
Temp.:
20 °C
Remarks on result:
other: pressure=978.9 hPa

Method Details

Observed Values

 

 

1st

Observation

2nd

Observation

Guideline

OECD 109

 

 

Method

IS 4730 : 1994 (Reaffirmed 2010)

Method for Determination of

Density of Liquids (First Revision)

 

 

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.

 

 

Test

temperature

(°C)

20°C

20°C

Atmospheric

pressure

(hPa)

979.4

978.5

Weight of

empty dry

pyknometer(X)

g

29.260

31.112

Weight of

pyknometer +

test item (Y)

g

81.876

83.931

Apparent

mass of test

item (M1)

(M1 = Y - X) g

52.616

52.819

Weight of

pyknometer +

water (Z)

g

78.934

81.006

Apparent

mass of water

(M2)

(M2 = Z - X) g

49.674

49.894

Buoyancy

correction (A)

A = (*ρat × M2)

0.058

0.058

Density of

water** at test

temperature

g/cm³ (ρtw)

0.9982

0.9982

 

CALCULATIONS:

FOR LIQUIDS

Density = (M1+A)/ (M2+A) X ρtw

1st calculated density

2nd calculated density

(52.616+0.058)

____________ X 0.9982 = 1.057 g/cm3

g/cm³ (49.674+0.058)

(52.819+0.058)

____________ X 0.9982 = 1.056 g/cm3

g/cm³ (49.894+0.058)

Average density

= 1.056 g/cm³

Conclusions:
The density of chemical was determined following OECD Guideline 109 and IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) according to the using glass pyknometer. The mean density of the test item was determined to be 1.056 g/cm³ at 20°C and 978.9hPa
Executive summary:

The density of chemical was determined following OECD Guideline 109 and IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) according to the using glass pyknometer The mean density of the test item was determined to be 1.056 g/cm³ at 20°C and 978.9hPa

Description of key information

The density of chemical was determined following OECD Guideline 109 and IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) according to the using glass pyknometer The mean density of the test item was determined to be 1.056 g/cm³ at 20°C and 978.9hPa.

Key value for chemical safety assessment

Relative density at 20C:
1.056

Additional information

In an experiment,the density of chemical was determined following OECD Guideline 109 and IS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) according to the using glass pyknometer The mean density of the test item was determined to be 1.056 g/cm³ at 20°C and 978.9hPa.

Other supporting studies suggests that the density of chemical was reported to be in the range of 0.991- 0.994 g/cm3 at 25 degree C.

As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of density 1.056 g/cm3 at 20 degree C, thus it is considered as key study for the chemical safety assessment.