Resinoid of Myroxylon balsamum var. pereirae (Fabaceae) obtained from the exudate by hexane extraction

Density

Link to relevant study record(s)

Reference

Endpoint:

density, other

Type of information:

experimental study

Adequacy of study:

key study

Study period:

06 October 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, and under GLP. The test substance is adequately characterised. Therefore full validation applies.

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 2014 / Signed on 8 April 2015

Type of method:

pycnometer method

Key result

Type:

density

Density:

ca. 1.104 g/cm³

Temp.:

20 °C

All measured values are presented in the following table:

First Determination
Weighing #	m1	m2	m3
Item	Pycn. empty	Pycn. +H2O	Pycn. + test item
Mass in g	43.6372	94.0237	99.3405
Temperature in^°C	20.0	19.8	20.4
Second Determination
Weighing #	m1	m2	m3
Item	Pycn. empty	Pycn. +H2O	Pycn. + test item
Mass in g	43.6361	94.0200	99.3610
Temperature in^°C	20.4	20.2	19.8

Then, the following values were calculated:

First Determination			Error rel.	Error abs.
Temperature	19.8	°C		0.1
Density of water	0.998203	g/cm^3	2.00%	0.0002
Volume of Pycnometer	50.4772	cm^3
Density of Test Item	1.1035	g/cm3	0.0023%	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	50.4746	cm^3
Density of Test Item	1.1040	g/cm^3	0.0023%	0.0000

The mean value and its standard deviation are presented below:

Parameter	Value	Unit	Standard Deviation	Relative Standard Deviation
Volume of Pycnometer	50.48	cm^3	0.0018	0.00%
Density of Test Item	1.1038	g/cm^3	0.0003	0.03%
Density of Test Item	1103.8	kg/m^3	0.3	0.03%
Relative Density of Test Item	1.1038		0.0003	0.03%

Conclusions:

The density of test item was determined to be 1.1038 ± 0.0003 g/cm3 at 20 ± 0.4 °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 OECD 109, resp. EU A.3 guideline, using a pycnometer.

A density of 1.1038 ± 0.0003 g/cm³ at 20 ± 0.4 °C was measured. This value is the mean of two independent determinations ± the standard deviation. Standard deviation shows very good correlation of the two determinations.

Description of key information

The density of test item was determined to be 1.1038 ± 0.0003 g/cm3 at 20 ± 0.4 °C.

Key value for chemical safety assessment

Relative density at 20C:

1.104

Additional information

A fully reliable experimental study, conducted according to OECD 109/ EU A3 guideline is available.

It is considered as a key study, and the result is retained as key data.