Pyrene

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2009

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: guidance followed, no GLP

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2009

Report date:

2009

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

no

GLP compliance:

no

Type of method:

static method

Test material

Test material information

Constituent 1

Reference substance name:

Pyrene

EC Number:

204-927-3

EC Name:

Pyrene

Cas Number:

129-00-0

Molecular formula:

C16H10

IUPAC Name:

pyrene

Results and discussion

Vapour pressure

Vapour pressure 1

Temp.:

ca. 183 °C

Vapour pressure:

ca. 1.07 kPa

Remarks on result:

other: measured value

Vapour pressure 2

Temp.:

ca. 20 °C

Vapour pressure:

ca. 0.2 Pa

Remarks on result:

other: extraqpolated value, out of scope

Transition / decomposition

Transition / decomposition:

yes

Transition temp.:

ca. 145.3 °C

Any other information on results incl. tables

Linear equation: log p = -2964.5*(1/T)+9.4551

Scope: from 183 to 393 °C

Nature of the change during measuring: none

Nature of the change for estimate: transition liquid-solid

Temperature of transition: 145.3 °C

Applicant's summary and conclusion

Conclusions:

The real value for 20°C should be 1000x lower than extrapolated value; extrapolated value is out of scope, moreover there is a liquid-solid transition