Resin acids and Rosin acids, esters with glycerol and diethylene glycol

Density

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

density, other

Remarks:

absolute density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

28 Sep 2020

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

GLP compliance:

no

Type of method:

pycnometer method

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source (i.e. manufacturer or supplier) and lot/batch number of test material: Super Ester A-75 / Lot K9C029

Key result

Type:

density

Density:

1.05 g/cm³

Temp.:

23.5 °C

Conclusions:

The density of rosin acid derivative was determined to be 1.05 g/cm³ at 22-25 °C.

Executive summary:

The density was determined using a stainless-steel pycnometer. The principles of the method used in this study are similar to a method of density measurement permitted by test guidance OECD 109 but was not GLP compliant. Therefore, this study is considered reliable with restrictions.

Reference 2

Endpoint:

density, other

Remarks:

Density

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP compliant, guideline study, available as unpublished report, fully acceptable without restriction

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Key result

Type:

density

Density:

1 063 kg/m³

Temp.:

20 °C

Apparatus : Pycnometer of known volume, chemical balance.

Determining the Density of the Immersion Liquid

Run Number	1
Mass of Empty Pycnometer (g)	20.18
Temperature (°C)	20
Mass of water added to Pycnometer (g)	44.73
Mass of immersion liquid added to Pycnometer (g)	44.12
Calculated Density of water using Equation 1 (g.cm-3)	0.982
Calculated Density of immersion liquid using Equation 2 (g.cm-3)	0.958
Density of immersion liquid (kg.m-3)	958

Equation 1 (Calculation for the density of water)

Mass of water / volume of pycnometer = Density of water

Equation 2 (Calculation for the density of immersion liquid)

ρIL = mIL x ρW,

mW

Where :

mIL is the mass of the immersion liquid

mW is the mass of water

ρW,t is the density of water at temperature t

Calculated value for the density of immersion liquid = 958 kg.m-3 @ 20°C

Determining the Density of the Sample

Run Number	1	2
Mass of Empty Pycnometer (g)	20.18	20.18
Mass of Sample & Pycnometer (g)	34.36	33.04
Mass of Sample added to empty Pycnometer (g)	14.18	12.86
Mass of Sample, Pycnometer & immersion liquid	45.37	45.54
Mass of immersion liquid added (g)	11.01	12.50
Calculated Density of Sample(g/cm3)	1.050	1.076
Density of Sample (kg/m3)	1050	1076
Mean Result (kg.m-3)	1063

Equation 3 (Calculation for the density of the sample)

ρS,t = ms ρIL

m1 – m2

Where: ms is the mass, in grams, of the sample;

m1 is the mass, in grams, of immersion liquid required to fill the pycnometer;

m2 is the mass, in grams of immersion liquid required to fill the pycnometer containing the specimen;

ρIL is the density of the immersion liquid (as determined by equation 1)

Conclusions:

The following density result was obtained: 1063 kg.m-3 at 20°C (mean of 2 runs)

Executive summary:

The following density result was obtained: 1063 kg.m-3 at 20°C (mean of 2 runs)

Description of key information

The density of Rosin ester substances ranges from 1004 kg/m3 to 1090 kg/m³.

The density of rosin acid derivative was determined to be 1.05 g/cm³ (1050 kg/m³) at 22 -25 °C.

Additional information

The density was determined using a stainless-steel pycnometer. The principles of the method used in this study are similar to a method of density measurement permitted by test guidance OECD 109 but was not GLP compliant.

A GLP-compliant study, conducted according to EU Method A3 pycnometer, was provided for Resin acids and rosin acids, esters with glycerol (Chilworth Technology, 2010 a). The density of Resin acids and rosin acids esters with glycerol is 1063 kg/m³ at 20°C (mean of 2 runs). The test material in this study may be thought of as forming a part of the registered substance composition. Information provided to support readacross.