Phthalonitrile

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1987

Report date:

1987

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

other: OECD 104

Principles of method if other than guideline:

Measurement method:
1) Above the solid according to the carrier gas entrainment method.
2) Above the liquid using the dynamic method under a nitrogen atmosphere.

2) is relevant for the boiling point

GLP compliance:

no

Type of method:

dynamic method

Remarks:

using nitrogen atmosphere

Test material

Test material information

Constituent 1

Reference substance name:

Phthalonitrile

EC Number:

202-044-8

EC Name:

Phthalonitrile

Cas Number:

91-15-6

Molecular formula:

C8H4N2

IUPAC Name:

benzene-1,2-dicarbonitrile

Details on test material:

- Name of test material (as cited in study report): phthalonitrile
- Analytical purity: purity 99.96%

Results and discussion

Boiling point

Key result

Boiling pt.:

304.5 °C

Atm. press.:

1 013.3 hPa

Remarks on result:

other: extrapolated based on experimental data

Any other information on results incl. tables

Temperature, °C	Vapour pressure (above the solid), hPa	Thermal exposure time, h
78.4	0.076
88.4	0.232
98.4	0.430
108.4	1.276
118.4	2.050	ca. 200
140.7 – 141.64	solidification range

 

Temperature, °C	Vapour pressure (above the liquid), hPa	Thermal exposure time, h
148.05	10.090	0.30
164.85	20.078	0.51
175.49	30.055	0.67
195.24	60.002	0.84
211.52	100.940	0.99
250.66	300.510	1.24
286.76	699.890	1.48
295.92	849.660	1.63
303.88	999.400	1.78
304.5	1013.3	---

measured range 148.05 to 303.88°C calculated from the regression derived equation  (mean deviation: 0.117 %): 

ln (p/bar) = A + B / (C + t/°C) A: 9.9611 B: -4914.33 C: 189.50