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Physical & Chemical properties

Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
27 Jun 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Qualifier:
according to
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
GLP compliance:
yes
Remarks:
Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany
Type of method:
air comparison pycnometer (for solids)
Key result
Type:
relative density
Density:
1.52 other: relative density is dimensionless
Temp.:
20 °C

Two test series with different weights of the substance were carried out in helium gas at 20°C. Results are reported in the table below.

 

Experiment 1

Experiment 2

Weight

1.65473 g

1.65437 g

Volume

cm³

Density

g/cm³

Volume

cm³

Density

g/cm³

1. measurement

1.0749

1.5394

1.1011

1.5025

2. measurement

1.0740

1.5407

1.1010

1.5026

3. measurement

1.0805

1.5314

1.1035

1.4991

4. measurement

1.0746

1.5398

1.1041

1.4984

5. measurement

1.0759

1.5380

1.1060

1.4957

6. measurement

1.0744

1.5402

1.1076

1.4937

7. measurement

1.0794

1.5330

1.1055

1.4965

8. measurement

1.0769

1.5366

1.1074

1.4939

9. measurement

1.0816

1.5298

1.1126

1.4870

10. measurement

1.0820

1.5293

1.1099

1.4905

Mean Density g/cm3

1.5358

1.4960

 

Mean (experiments 1 to 2): 1.52 g/cm³

Standard deviation: 0.0281 g/cm³

Relative standard deviation: 1.86%

 

Relative density (D420) = 1.52

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15 Dec 2015 to 25 Jan 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Qualifier:
according to
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
GLP compliance:
yes (incl. certificate)
Remarks:
Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany
Type of method:
air comparison pycnometer (for solids)
Key result
Type:
relative density
Density:
1.47 other: relative density is dimensionless
Temp.:
20 °C

Two test series with different weights of the substance were carried out in helium gas at 20 °C. To ensure the complete purging and thermal equilibration of the system the first five measurements of each experiment were excluded from evaluation. For averaging only the results of the last ten measurements were used. The results of all the measurement are reported in the table below.

 

Experiment 1

Experiment 2

Weight

1.0736 g

1.0738 g

Volume
cm
³

Density
g/cm
³

Volume
cm
³

Density
g/cm
³

1. measurement

0.7231

1.4847

0.7234

1.4844

2. measurement

0.7254

1.4799

0.7255

1.4801

3. measurement

0.7263

1.4781

0.7264

1.4782

4. measurement

0.7269

1.4771

0.7270

1.4770

5. measurement

0.7273

1.4761

0.7277

1.4755

6. measurement

0.7279

1.4750

0.7286

1.4737

7. measurement

0.7278

1.4751

0.7290

1.4729

8. measurement

0.7284

1.4740

0.7287

1.4736

9. measurement

0.7284

1.4739

0.7291

1.4728

10. measurement

0.7288

1.4731

0.7292

1.4726

11. measurement

0.7285

1.4737

0.7294

1.4722

12. measurement

0.7289

1.4728

0.7297

1.4715

13. measurement

0.7295

1.4717

0.7299

1.4711

14. measurement

0.7295

1.4717

0.7296

1.4718

15. measurement

0.7288

1.4732

0.7295

1.4719

Mean Density (Measurement 6 to 16)
g/cm
³

1.4734

1.4724

 

Mean (experiments 1 to 2) 1.47 g/cm³

Standard deviation: 0.0007 g/cm³

Relative standard deviation: 0.05 %

 

Relative density (D420) = 1.47

Description of key information

Relative density 1.47 (technical substance) and 1.52 (pure substance) at 20 °C (OECD Guideline 109, pycnometer)

Key value for chemical safety assessment

Relative density at 20C:
1.47

Additional information

The density value for technical substance has been selected as key value, as technical purity better represents the reality.