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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 test result performed using standard test guidelines
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Principles of method if other than guideline:
The density of test item 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.
GLP compliance:
no
Type of method:
pycnometer method
Key result
Type:
density
Density:
0.92 g/cm³
Temp.:
20 °C
Remarks on result:
other: No other detail available

OBSERVATIONS

The mean density of liquid test chemical is determined by recording weights of empty pycnometer and apparent weight of test chemical and water at required test temperature of 20 °C with respective atmospheric pressure. The density is calculated using Buoyancy correction value. The readings are taken in replicate and mean density is reported.

Sr No

Method Details

Observed Values

1st Observation

2nd Observation

1

Test temperature

(°C)

20

20

2

Atmospheric pressure

(hPa)

972.0

973.2

3

Weight of empty dry pycnometer(X)

g

29.379

29.822

4

Weight of pycnometer + test chemical(Y)

g

75.031

75.478

5

Apparent mass of test chemical(M1)

(M1 = Y - X)

45.652

45.656

6

Weight of pycnometer +  water(Z)

g

78.978

79.309

7

Apparent mass  of water(M2)

(M2  = Z - X)g

49.599

49.487

8

Buoyancy correction(A)

A=(*ρat × M2)

0.057

0.057

9

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

 

7. CALCULATIONS

For liquids:

Density = (M1+A)  X   ρtw

                   (M2+A)

 

1stcalculated density =( 45.652+0.057) X   0.9982 =0.9188

                                     ( 49.599+0.057)

 

2ndcalculated density =(45.656+0.057) X   0.9982 = 0.9210

                                     (49.487+0.057)

 

Average density = (0.91885620670211+0.92101397949298)  /   2

 

1stcalculated density

2ndcalculated density

0.91885620670211

0.92101397949298

Average density

=0.92 g/cm3

 

Where,

M1= Apparent mass of test chemical

M2= Apparent mass of water

A = Buoyancy correction (0.001168 g/cm3, when density of air at 27°C and 760 mm Hg pressure)

 ρtw= Density of water at test temperature

 

 

Conclusions:
The density of test item was determined following OECD Guideline 109 and according to theIS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean density of test item was determined to be 0.92 g/cm³ at 20°C and 973.3 hPa.
Executive summary:

The density of test item was determined following OECD Guideline 109 and according to theIS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean  density of test item  was determined to be 0.92g/cm³ at 20°C and 973.3 hPa.

Description of key information

The density of test item was determined following OECD Guideline 109 and according to theIS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean  density of test item  was determined to be 0.92 g/cm³ at 20°C and 973.3 hPa.

Key value for chemical safety assessment

Additional information

The density of test item was determined following OECD Guideline 109 and according to theIS 4730 : 1994 (Reaffirmed 2010) – Method for Determination of Density of Liquids (First Revision) using glass pyknometer. The mean  density of test item  was determined to be 0.92 g/cm³ at 20°C and 973.3 hPa.

In support to this, data from handbooks and secondary databases,indicates the density of test chemical to be 0.92 g/cm3 at 20 degc .