4-aminophenol

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1954

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Study well documented, meets generally accepted scientific principles, acceptable for assessment

Reason / purpose for cross-reference:

reference to same study

Qualifier:

no guideline followed

Guideline:

other:

Deviations:

not specified

Principles of method if other than guideline:

Vapor pressure determined on a sublimed sample of p-aminophenol in an isoteniscope at temperatures from 130 to 186 degree C.

GLP compliance:

not specified

Type of method:

isoteniscope

Temp.:

25 °C

Vapour pressure:

0 mm Hg

Remarks on result:

other: extrapolated from higher temperature data points

Temperature, C       pressure, mm hg

130.2                                0.3

143                                   2.3

145                                   2.2

150                                   3.0              

151.1                                3.2

157.5                                4.7

159.6                                5.1

167                                   8.0

171.1                                9.9

176.5                               14.9

186.3                               26.7

284                                 760

Conclusions:

Vapor pressure is 4 x 10 (-5) mg Hg at 25 degree C

Description of key information

0.0053 Pa at 25C (0.00004 mm HG)

Key value for chemical safety assessment

Vapour pressure:

0.005 Pa

at the temperature of:

25 °C

Additional information

Value reported in key study in mm hg. Converted from mm Hg to Pascal which results in 0.0053 Pa.