Resinoid of Ferula galbaniflua (Apiaceae) obtained from the exudate by hydrocarbon ester alcohol extraction.

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

17 November 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

The study was conducted according to an internationally recognised method. Test substance is adequately characterised. Therefore full validation applies.

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to other 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 13 and 14 October/ Signed on 8 April 2015

Type of method:

pycnometer method

Key result

Type:

relative density

Density:

1.026 other: no dimension

Temp.:

20 °C

All measured values are given in the following table:

First Determination
Weighing #	m1	m2	m3
Item	Pycn. empty	Pycn. + H2O	Pycn. + test item
Mass in g	36.7379	61.6056	62.3085
Temperature in^°C	20.2	20.0	19.8
Second Determination
Weighing #	m1	m2	m3
Item	Pycn. empty	Pycn. +H2O	Pycn. + test item
Mass in g	36.7381	61.6049	62.3055
Temperature in^°C	19.8	20.2	20.2

The following values were calculated:

First Determination			Error rel.	Error abs.
Temperature	20.0	°C		0.1
Density of water	0.998203	g/cm^3	2.00%	0.0002
Volume of Pycnometer	24.9125	cm^3
Density of Test Item	1.0264	g/cm3	0.0048%	0.0000
Second Determination			Error rel.	Error abs.
Temperature	20.2	°C		0.1
Density of water	0.998203	g/cm^3	2.00%	0.0002
Volume of Pycnometer	24.9116	cm^3
Density of Test Item	1.0263	g/cm^3	0.0048%	0.0000

Results - mean value:

Parameter	Value	Unit	Standard Deviationin g/cm^3	Relative Standard Deviation
Volume of Pycnometer	24.91	cm^3	0.0006	0.00%
Density of Test Item	1.0264	g/cm^3	0.0001	0.01%
Density of Test Item	1026.4	kg/m^3	0.1	0.01%
Relative Density of Test Item	1.0264		0.0001	0.01%

Conclusions:

The density of the test item was calculated as 1.0264 ± 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

Executive summary:

The study was performed in order to determine the density of test item according to OECD 109, resp. EU A.3 guideline, using a pycnometer.

The density of the test item was calculated as 1.0264 ± 0.0001 g/cm3 at 20.0 ± 0.2°C.

Description of key information

The density of test item was determined to be 1.0264 ± 0.0001 g/cm³ at 20 ± 0.2 °C.

This value is the mean of two independent determinations

Key value for chemical safety assessment

Relative density at 20C:

1.026

Additional information

A fully reliable experimental study, conducted according to OECD 109 /EU A3 guideline, using pycnometer, is available. It is considered as a key study, and the result is retained as key data.