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Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2019-2020

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:

2012

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Version / remarks:

2008

Deviations:

no

Principles of method if other than guideline:

Not applicable

GLP compliance:

yes (incl. QA statement)

Remarks:

Inspected on 15-16/11/2017, Signed on 15/05/2018

Type of method:

pycnometer method

Key result

Type:

relative density

Density:

1.033 other: relative density

Temp.:

20 °C

Pre-test for viscosity

The test item was flowable and it was possible to inject the test item with a one way syringe.

Measurement

All measured values and the corresponding calculation results are given in the following table:

Measured Values

First Determination
Weighing #	m1	m2	m3
Item	Pycn. empty	Pycn. +H2O	Pycn. + test item
Mass in g	32.1625	57.1894	58.0622
Temperature in^°C	20.0	20.0	20.0
Second Determination
Weighing #	m1	m2	m3
Item	Pycn. empty	Pycn. +H2O	Pycn. + test item
Mass in g	32.1623	57.1858	58.0620
Temperature in^°C	20.2	20.2	20.2

Pycn. = Pycnometer

Calculated Values

First Determination			Error rel.	Error abs.
Temperature	20.0	°C		0.1
Density of water	0.9982067	g/cm^3	2.00%	0.0002
Volume of Pycnometer	25.0719	cm^3
Density of Test Item	1.0330	g/cm^3	0.0047%	0.0000
Second Determination			Error rel.	Error abs.
Temperature	20.2	°C		0.1
Density of water	0.9981652	g/cm^3	2.00%	0.0002
Volume of Pycnometer	25.0695	cm^3
Density of Test Item	1.0331	g/cm^3	0.0047%	0.0000

rel. = relative; abs. = absolute

Presentation of Results

Results of the single determinations with the respective error as well as the mean value and its standard deviation are presented in the following tables:

Results of Single Determinations

Determination	Density in g/cm^3	Error of Determ. in g/cm^3
1	1.0330	0.0000
2	1.0331	0.0000

 

Results – Mean Values

Parameter	Value	Unit	Standard Deviation	Relative Standard Deviation
Volume of Pycnometer	25.07	cm^3	0.0017	0.01%
Density of Test Item	1.0331	g/cm^3	0.0001	0.01%
Density of Test Item	1033.1	kg/m^3	0.1	0.01%
Relative Density of Test Item	1.0331		0.0001	0.01%

Note: All calculations are performed with unrounded values. Therefore, re-calculation withrounded values may lead to slightly different results.

Conclusions:

The density of the test item was calculated as 1.0331 ± 0.0001 g/cm3 at 20.0 ± 0.2°C

Executive summary:

An experimental study, conducted in accordance with conditions recommended in OECD guideline and under GLP was performed. The density of the test item was calculated as 1.0331 ± 0.0001 g/cm³ at 20.0 ± 0.2°C. This value is the mean of two independent determinations ± the standard deviation. Standard deviation shows very good correlation of the two determinations.

Therefore, the study is considered valid.

Description of key information

The density of the test item was calculated as 1.0331 ± 0.0001 g/cm3 at 20.0 ± 0.2°C

Key value for chemical safety assessment

Relative density at 20C:

1.033

Additional information

An experimental study, conducted in accordance with conditions recommended in OECD guideline and under GLP was performed.The density of the test item was calculated as 1.0331 ± 0.0001 g/cm³ at 20.0 ± 0.2°C.This value is the mean of two independent determinations ± the standard deviation. Standard deviation shows very good correlation of the two determinations.

Therefore, the study is considered valid and as a key study.