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Diss Factsheets

Physical & Chemical properties

Density

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Reference
Endpoint:
density, other
Remarks:
density in g/cm³
Type of information:
experimental study
Adequacy of study:
key study
Study period:
January 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
May 31, 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
July 27, 1995
Deviations:
no
GLP compliance:
no
Remarks:
Internal management system
Type of method:
oscillating densitimeter
Type:
density
Density:
1.003 g/cm³
Temp.:
20 °C
Remarks on result:
other: The standard deviation is ± 0.0006 g/cm³.

Density PEHA

Measured density of PEHA at 20 °C:

-        measurement 1: 1.0034 g/cm³

-        measurement 2: 1.0026 g/cm³

-        measurement 3: 1.0022 g/cm³

 

Mean value at 20 °C is 1.003 g/cm³. The standard deviation is ± 0.0006 g/cm³.

 

The density of PEHA turned out to be outside the density range of the two calibration liquids. But because the range was exceeded only just, it is not expected that this affected the outcome of the study. 

Calibration and validity verification

The measured density of the calibration liquids at 20 °C is mentioned in table 1. Also the deviation from the literature values is mentioned. The mean value for both liquids agrees within ± 0.001 g/cm³ (accuracy range) with the literature values.

 

Table 1: measured density of calibration liquids at 20 °C

Calibration liquid

Measurement

Density

[g/cm³]

Mean density value [g/cm³]

Deviation from literature value [g/cm³]

Demineralized water

1

0.9983

0.9983

0.0001

2

0.9983

3

0.9983

Ethanol

1

0.7900

0.7899

0.0006

2

0.7899

3

0.7899

 The validity of the method was verified prior to the measurement with PEHA using demineralized water.

Measured density of water at 20 °C:

-      measurement 1: 0.9982 g/cm³

-      measurement 2: 0.9982 g/cm³

These values agree within ± 0.001 g/cm³ (accuracy range) with the literature value for demineralized water.

Conclusions:
The relative density of the substance at 20 °C is 1.003.

Description of key information

The relative density of the substance at 20 °C is 1.003 (OECD Guideline 109, oscillating densitimeter)

Key value for chemical safety assessment

Relative density at 20C:
1.003

Additional information