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Vapour pressure

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Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
5 Mar 2018
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Reference:
Composition 0
Qualifier:
according to
Guideline:
other: ASTM E 1719-97 “Vapor Pressure Measurement by Ebuilliometry”
Deviations:
no
GLP compliance:
no
Type of method:
dynamic method
Test material information:
Composition 1
Specific details on test material used for the study:
- Physical state: clear, viscous liquid
- Source and lot/batch No.of test material: Lot 115
- Purity: > 97%
Key result
Temp.:
20 °C
Vapour pressure:
< 2 mm Hg

 Temperature (°C)  Pressure (mm Hg)
 65.1  2.0
 83.1  2.1
 100.0  2.2

The substance was never observed to be boiling during the study.

Conclusions:
The vapor pressure of 1,1'-isophthaloylbis(2-methylaziridine) is < 2.0 mm Hg at 20 °C.
Executive summary:

A vapor pressure < 2.0 mm Hg at 20 °C for 1,1'-isophthaloylbis(2-methylaziridine) was reported for the compound. The vapor pressure and temperature were recorded at three points from 65.1 °C to 100.0 °C under the dyanimc method, but boiling was never observed. The measured pressure at 65.1 °C was reported as the upper limit of the vapor pressure. The study was conducted following method ASTM E 1719-97 but was not conducted in accord with GLP guidelines; therefore, the study is considered reliable with restrictions.

Endpoint:
vapour pressure
Type of information:
not specified
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Reference:
Composition 0
Qualifier:
no guideline followed
GLP compliance:
no
Test material information:
Composition 1
Key result
Temp.:
20 °C
Vapour pressure:
ca. 20 mm Hg
Conclusions:
A vapor pressure of ca. 20 mm Hg at 20 °C was reported for 1,1'-isophthaloylbis(2-methylaziridine).
Executive summary:

A vapor pressure of ca. 20 mm Hg at 20 °C was reported for 1,1'-isophthaloylbis(2-methylaziridine). Only the result was reported on the SDS and no information about the method used was provided; therefore, the reliability of the data is not assignable.

Description of key information

The vapor pressure of 1,1'-isophthaloylbis(2-methylaziridine) is < 2.0 mm Hg at 20 °C.

Key value for chemical safety assessment

Additional information

In the key study, a vapor pressure < 2.0 mm Hg at 20 °C for 1,1'-isophthaloylbis(2-methylaziridine) was reported for the compound. The vapor pressure and temperature were recorded at three points from 65.1 °C to 100.0 °C under the dynamic method, but boiling was never observed. The measured pressure at 65.1 °C was reported as the upper limit of the vapor pressure. The study was conducted following method ASTM E 1719-97 but was not conducted in accord with GLP guidelines; therefore, the study is considered reliable with restrictions. In a supporting study, a vapor pressure of ca. 20 mm Hg at 20 °C was reported for 1,1'-isophthaloylbis(2-methylaziridine). Only the result was reported on the SDS and no information about the method used was provided; therefore, the reliability of the data is not assignable.