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Physical & Chemical properties

Density

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Reference
Endpoint:
density
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
07.02.-24.02.2012
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)
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method
Type:
density
Density:
> 1.214 - < 1.214 g/cm³
Temp.:
20 °C
Remarks on result:
other: Determination 1
Type:
density
Density:
> 1.213 - < 1.213 g/cm³
Temp.:
20 °C
Remarks on result:
other: Determination 2
Key result
Type:
density
Density:
1.214 g/cm³
Temp.:
20 °C
Remarks on result:
other: Mean

The density of the test item 2,2'-azobis(2 -amidinopropane)dihydrochloride was calculated as 1.2135 ± 0.0002 g/cm3 at 20.0 °C, which is the mean of two values. Precision of the value is given as maximal error of the single determination.

The standard deviation of the two values is only slightly higher than the maximal error of the single determination. Correspondence of the values is very good. Therefore the study is considered valid.

Conclusions:
The density of the substance is 1.2135 ± 0.0002 g/cm^3.
Executive summary:

Using the pycnometer method, a density of 1.2135 ± 0.0002 g/cm3 was measured. This value is the mean of two independent determinations with the maximum error of the single determination. Temperature was 20.0 ± 0.2 °C. Standard deviation was 0.0006 g/cm3, showing good correlation of the two determinations.

Description of key information

The density of the substance is 1.2135 ± 0.0002 g/cm3.

Key value for chemical safety assessment

Relative density at 20C:
1.214

Additional information