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Physical & Chemical properties

Flash point

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Reference
Endpoint:
flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 November 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.9 (Flash-Point)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
closed cup
Flash point:
> 200 °C
Remarks on result:
other: No flash point was observed up to 200 °C.

RESULTS

- Reference substance: The flash point of the reference substance Naphthalene was determined to be 81.6 °C, hardly deviating from the literature value (80 °C).

- Test material: No flash point was observed up to 200 °C.

Table 1: Instrument Parameters

Measured Substance

Naphthalene

Test Material

Initial temperature

65 °C

30 °C

Final temperature

100 °C

200 °C

Heating rate

5 °C/min

5 °C/min

Frequency of ignition

1.0 °C

1.0 °C

Air pulse

0.6 sec

0.6 sec

Threshold

20.0 kPa

20.0 kPa
Interpretation of results:
other: Not classified according to EU criteria
Conclusions:
Under the conditions of the test, no flash point was observed up to 200 °C.
Executive summary:

The flash point of the test material was determined in a GLP study performed according to EU Method A. 9 using the closed cup method.

Approximately 1 mL of the test material was filled into a 4 mL sample cup, a stirring magnet was inserted and it was placed in the tester. The sample was brought up to a starting temperature of 30 °C and the automatic flash point determination was initiated. The oven temperature was raised at a rate of 5 °C/min until it reached a maximum temperature of 200 °C. Oxygen was supplied by an air pulse at a rate of 0.6 sec. The pressure increase was continuously monitored and arcs were initiated at every preset step. The measuring procedure was continued until the pressure increase after an arc exceeded the programmed threshold.

Under the conditions of the test, no flash point was observed up to 200 °C in three tests run in parallel.

Description of key information

No flash point up to 200 °C, EU Method A. 9, Sárvári 2012e.

Key value for chemical safety assessment

Additional information

In the key study (Sárvári, 2012e) the flash point of the test material was determined in a GLP study performed according to EU Method A. 9 using the closed cup method.

Approximately 1 mL of the test material was filled into a 4 mL sample cup, a stirring magnet was inserted and it was placed in the tester. The sample was brought up to a starting temperature of 30 °C and the automatic flash point determination was initiated. The oven temperature was raised at a rate of 5 °C/min until it reached a maximum temperature of 200 °C. Oxygen was supplied by an air pulse at a rate of 0.6 sec. The pressure increase was continuously monitored and arcs were initiated at every preset step. The measuring procedure was continued until the pressure increase after an arc exceeded the programmed threshold.

Under the conditions of the test, no flash point was observed up to 200 °C in three tests run in parallel.