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Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2020-01-21
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
Adopted 02 October 2012
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
May 2008
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
0.953
Temp.:
20 °C

The pycnometer volume was determined using ultrapure water at 20 °C. The results are given in Table 1.

Table 1 Calibration of the pycnometer at 20 °C

Measured data

Empty pycnometer, g

Pycnometer with water, g

1

31.67882

56.30751

2

31.67869

56.30494

3

31.67904

56.31223

4

31.67900

56.30923

5

31.67918

56.31350

Density of water at 20 °C, g/cm3:

0.9983

-

Volume of pycnometer, cm3:

24.6725

-

 

The density of Propanediol Caprylate was determined from five replicates at 20 °C with the above determined volume of the pycnometer (24.6725 cm3). The results are given in Table 2.

Table 2 Density of the Propanediol Caprylate at 20 °C

Empty pycnometer, g

Pycnometer with test item, g

Test item in the pycnometer, g

Density of the test item, g/cm3

31.67906

55.20623

23.52717

0.9536

31.67903

55.17500

23.49597

0.9523

31.68716

55.17991

23.49275

0.9522

31.67919

55.20841

23.52922

0.9537

31.67922

55.18411

23.50489

0.9527

Mean:

0.9529

Confidence int. (95 %):

0.00087

RSD (CV %):

0.073

 

The relative density of Propanediol Caprylate was determined to be 0.9529 ± 0.00087 (with 95 % confidence interval) at 20 °C.

Conclusions:
The relative density of the test item at 20 °C (compared to water at 4 °C) according to the European Commission Regulation (EC) No. 440/2008 and in the OECD 109 was determined to be D420 = 0.9529 ± 0.00087.
Executive summary:

A study was conducted according to Regulation (EU) No. 440/2008 method A.3 and OECD Guideline No. 109 to determine the relative density of the test item. The density was determined using the pycnometer method. The density was calculated from the difference in weight between the full and empty pycnometer and its known volume. The relative density of the test item at 20 °C (compared to water at 4 °C) was determined to be D420 = 0.9529 ± 0.00087.

Description of key information

The relative density of the test item at 20 °C (compared to water at 4 °C) according to the European Commission Regulation (EC) No. 440/2008 and in the OECD 109 was determined to be D420 = 0.9529 ± 0.00087.

Key value for chemical safety assessment

Relative density at 20C:
0.953

Additional information

A study was conducted according to Regulation (EU) No. 440/2008 method A.3 and OECD Guideline No. 109 to determine the relative density of the test item. The density was determined using the pycnometer method. The density was calculated from the difference in weight between the full and empty pycnometer and its known volume. The relative density of the test item at 20 °C (compared to water at 4 °C) was determined to be D420 = 0.9529 ± 0.00087.