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

Vapour pressure

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

28 Sep 2020

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

other: ASTM E-1719-97 "Vapor Pressure Measurement by Ebuilliometry"

GLP compliance:

no

Type of method:

dynamic 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

Temp.:

251.6 °C

Vapour pressure:

0.7 mm Hg

The only stable reflux observed was at 251.6 °C and 0.7 mmHg. The test was stopped due to the upper safe operating temperature limit of the experiment.

Conclusions:

The vapor pressure of rosin acid derivative at 251.6 °C is 0.7 mmHg (ASTM E-1719-97).

Executive summary:

The vapor pressure of rosin acid derivative was determined by the dynamic method. Temperature was increased until boiling occurred and a steady drop wise reflux rate was established. The only stable reflux was observed at 251.6 °C and 0.7 mmHg. The test was stopped due to the upper safe operating temperature limit of the experiment. The study was performed comparable to ASTM E-1719-97 guideline but is not GLP compliant. Therefore, the study is considered reliable with restrictions.

Reference 2

Endpoint:

vapour pressure

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other: GLP compliant, guideline study, available as unpublished report, fully acceptable without restriction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.4 (Vapour Pressure)

GLP compliance:

yes (incl. QA statement)

Type of method:

static method

Key result

Temp.:

20 °C

Vapour pressure:

< 0.04 mBar

Apparatus : Static Method Apparatus; Temperature Bath, Balance, Pressure Monitors

Temp / °C	Temp / K	P / mbar	P / Pa
20	293.15	< 0.04	< 4

Comment

Sample was degassed and tested in the “as received” condition. Silicone oil was used as a manometer liquid. During the analysis the sample was held at a set temperature of 20°C for an hour and a pressure of 0.04 mbar was observed (towards the lower limit of detection of the static method). The operator therefore reported a result of < 0.04 mbar (< 4 Pa).

Conclusions:

The following vapour pressure result was obtained: < 0.04 mbar at 20°C

Executive summary:

The following vapour pressure result was obtained: < 0.04 mbar at 20°C

Description of key information

The vapour pressure of Rosin ester substances ranges from <3.3 x 10-9 Pa to <100 Pa.

The vapor pressure of rosin acid derivative at 251.6 °C is 0.7 mmHg (ASTM E-1719-97).

Additional information

The study was performed comparable to ASTM E-1719-97 guideline but is not GLP compliant. The vapor pressure of rosin acid derivative was determined by the dynamic method. Temperature was increased until boiling occurred and a steady drop wise reflux rate was established. The only stable reflux was observed at 251.6 °C and 0.7 mmHg. The test was stopped due to the upper safe operating temperature limit of the experiment. The study is considered reliable with restrictions.

A GLP-compliant study, conducted according to EU A4 static method, was provided for Resin acids and rosin acids, esters with glycerol (Chilworth Technology, 2010 a). The vapour pressure of Resin acids and rosin acids esters with glycerol is 0.04 mbar at 20°C. The test material in this study may be thought of as forming a part of the registered substance composition. Information provided to support readacross.