Piperonal

Vapour pressure

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

weight of evidence

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

documentation insufficient for assessment

Remarks:

Information from handbook

Qualifier:

no guideline followed

Principles of method if other than guideline:

No data was provided within the handbook regarding type of test method.

GLP compliance:

no

Type of method:

other: no data provided

Temp.:

87 °C

Vapour pressure:

133 Pa

Remarks on result:

other: Reported as 1 mmHg @ 87.0ºC

Temp.:

117.4 °C

Vapour pressure:

667 Pa

Remarks on result:

other: Reported as 5 mmHg @ 117.4ºC

Temp.:

132 °C

Vapour pressure:

1 333 Pa

Remarks on result:

other: Reported as 10 mmHg @ 132.0ºC

Temp.:

148 °C

Vapour pressure:

2 666 Pa

Remarks on result:

other: Reported as 20 mmHg @ 148.0ºC

Temp.:

165.7 °C

Vapour pressure:

5 333 Pa

Remarks on result:

other: Reported as 40 mmHg @ 165.7ºC

Temp.:

177 °C

Vapour pressure:

7 999 Pa

Remarks on result:

other: Reported as 60 mmHg @ 177.0ºC

Temp.:

191.7 °C

Vapour pressure:

13 332 Pa

Remarks on result:

other: Reported as 100 mmHg @ 191.7ºC

Temp.:

214.3 °C

Vapour pressure:

26 664 Pa

Remarks on result:

other: Reported as 200 mmHg @ 214.3ºC

Temp.:

238.5 °C

Vapour pressure:

53 329 Pa

Remarks on result:

other: Reported as 400 mmHg @ 238.5ºC

Temp.:

263 °C

Vapour pressure:

101 325 Pa

Remarks on result:

other: Reported as 760 mmHg @ 263.0ºC

Conclusions:

The vapor pressure is 1 mmHg at 87.0°C and 760 mmHg at 263.0ºC.

Executive summary:

The handbook reports that the vapor pressure is 1 mmHg at 87.0°C and 760 mmHg at 263.0ºC.

Reference 2

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

weight of evidence

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

secondary literature

Remarks:

Information from secondary source.

Reason / purpose for cross-reference:

reference to other study

Qualifier:

no guideline followed

Principles of method if other than guideline:

No data was provided within the handbook regarding type of test method.

GLP compliance:

no

Type of method:

other: no data provided

Temp.:

25 °C

Vapour pressure:

1.33 Pa

Remarks on result:

other: Reported as 0.01 mmHg @ 25ºC (extrapolated)

Conclusions:

The secondary reference reports the vapour pressure as 0.01 mmHg @ 25ºC (extrapolated),

Executive summary:

HSDB value is extrapolated from the data in Perry's Chemical Engineer's Handbook, 6th Ed.

Reference 3

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

weight of evidence

Study period:

1995

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

documentation insufficient for assessment

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

GLP compliance:

no

Type of method:

dynamic method

Temp.:

20 °C

Vapour pressure:

2.01 Pa

Remarks on result:

other: extrapolated

Calculation method: non-linear regression of the experimental points using a matrices of permutation of Fremann-Carrol.

The boiling temperature was verified according to the method of Siwoloboff, while the vapour pressure at 20°C was extrapolated by means of the equation of Antoine.

Parameters of Antoine: A = 9.1717 B = 3561.159 C = 303.932 [mmHg] (parameters deduced by the regression)

Conclusions:

The vapor pressure is 2.01 Pa at 20 °C

Description of key information

The vapour pressure at 20ºC is 2 Pa.

Key value for chemical safety assessment

Vapour pressure:

2 Pa

at the temperature of:

20 °C

Additional information

Various Klimisch 4 results were available. There was no serious disagreement between the results reported. The value selected for the key value for the chemical safety assessment (i.e. 2 Pa @ 20ºC) represents the worse case scenario at ambient temperature.