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Flash point

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Endpoint:
flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-03-19 to 2010-03-22
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
ISO No., other: ASTM D93-08
Deviations:
not specified
Principles of method if other than guideline:
The test method covers the determination of the open cup and closed cup flash point temperature (using the Pensky-Martens apparatus), under the non-equilibrium method, of a liquid sample in air at atmospheric pressure.
GLP compliance:
yes
Type of method:
closed cup
Flash point apparatus:
Pensky-Martens apparatus
Key result
Flash point:
24 °C
Atm. press.:
100.8 - 101.8 kPa
Remarks on result:
other: No correction is requitred for the pressure

Table 1: Flash Point results

Temperature (°C)

Barometric pressure (kPa)

Ignition? Yes (y)/ No (n)

Halo/Enlarged test flame? Yes (y)/No (n)

-5 to 0

100.8

n

n

1 – 9

100.8

n

n

10 – 19

100.8

n

n

20 – 23

100.8

n

y

24

100.8

y

n

Fresh Sample

4 – 9

101.8

n

n

10 – 19

101.8

n

n

20 – 23

101.8

n

y

24

101.8

y

n

Fresh Sample

4 – 9

101.8

n

n

10 – 19

101.8

n

n

20 – 23

101.8

n

y

24

101.8

y

n

The results of testing are highly dependent on the composition and physical nature of the sample.

Interpretation of results:
Category 3 (flammable liquids) based on GHS criteria
Conclusions:
A flash point of 24 °C is determined for the test substance using an appropriate test guideline and in line with GLP. The result is considered reliable.
Endpoint:
flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009-11-17 to 2010-03-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.9 (Flash-Point)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
equilibrium method closed cup
Flash point apparatus:
Setaflash apparatus
Key result
Flash point:
5 °C
Atm. press.:
99.78 kPa
Remarks on result:
other: The flash point of the test material has been determined to be 5 ± 2°C.

Results:

The results are shown in the following table:

Temperature (ºC)

Observations

21.0 (fresh sample)

A blue flash spread across the sample cup.

-15.0 (fresh sample)

No flash was observed.

-10.0

No flash was observed.

-5.0

No flash was observed.

0.0

No flash was observed.

5.0

No flash was observed.

10.0

A blue flash spread across the sample cup.

5.0 (fresh sample)

A blue flash spread across the sample cup.

1.0 (fresh sample)

No flash was observed.

2.0

No flash was observed.

3.0

No flash was observed.

4.0

No flash was observed.

5.0

No flash was observed.

2.0 (fresh sample)

No flash was observed.

3.0

No flash was observed.

4.0

No flash was observed.

3.0 (fresh sample)

No flash was observed.

4.0

No flash was observed.

4.0 (fresh sample)

No flash was observed.

5.0

No flash was observed.

5.0 (fresh sample)

A blue flash spread across the sample cup.

5.0 (fresh sample)

A blue flash spread across the sample cup.

3.0 (fresh sample)

No flash was observed.

3.0 (fresh sample)

No flash was observed.

Atmospheric pressure=    99.78 kPa

Corrected flash point  =    5.355ºC

Interpretation of results:
Category 2 (highly flammable liquids) based on GHS criteria
Conclusions:
A flash point value of 5 ± 2 °C at 99.78 kPa was determined in a reliable study conducted according to Method A9 test method.
Endpoint:
flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-04-09
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.9 (Flash-Point)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
equilibrium method closed cup
Flash point apparatus:
Setaflash apparatus
Key result
Flash point:
37 °C
Atm. press.:
103.26 kPa

The results are shown in the following table:

Temperature (ºC)

Observations

20.0 (fresh sample)

No flash was observed.

25.0

No flash was observed.

30.0

No flash was observed.

35.0

No flash was observed.

40.0

A blue flash spread across the sample cup.

35.0 (fresh sample)

No flash was observed.

36.0

A blue flash spread across the sample cup.

36.0 (fresh sample)

No flash was observed.

37.0

A blue flash spread across the sample cup.

37.0 (fresh sample)

A blue flash spread across the sample cup.

37.0 (fresh sample)

A blue flash spread across the sample cup.

35.0 (fresh sample)

No flash was observed.

35.0 (fresh sample)

No flash was observed.

Atmospheric pressure=    103.26 kPa

Corrected flash point  =    36.555°C

Interpretation of results:
Category 3 (flammable liquids) based on GHS criteria
Conclusions:
A flash point value of 37 ± 2 °C at 103.26 kPa was determined in a reliable study conducted according to Method A9 test method.

Description of key information

Flash point: 5°C (EU Method A.9) 

Key value for chemical safety assessment

Flash point at 101 325 Pa:
5 °C

Additional information

Several flash point studies conducted in accordance to an appropriate test guideline and in line with GLP are available for different samples of the test substance. Flash point values of 5°C, 26°C and 37°C have been determined for the samples tested. It is also possible to obtain a flash point value lower than 5°C in some samples of the substance. Turpentine Oil from Pulping Processes (TOPP) is a UVCB substance and the variations in the results could be due to the nature or composition of the samples tested.

TOPP is therefore classified as flammable/highly flammable liquid, however, it is not expected that the substance will be pyrophoric or release flammable gas in contact with water.

A flash point of 5 -37°C and boiling point of 154 -170°C indicate that TOPP should be classified as a flammable/highly flammable liquid in accordance with Regulation (EC) No. 1272/2008.