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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:
June 2005
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted to GLP and in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not effect the quality of the relevant results.
Qualifier:
according to guideline
Guideline:
EU Method A.9 (Flash-Point)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
equilibrium method closed cup
Flash point:
>= -20 - <= -16 °C
Atm. press.:
101.325 kPa

Calculation

The flash point temperature was corrected to a pressure of 101.325 kPa using the following equation:

FP = C + 0.23 (101.325 - B)

where:

FP = corrected flash point (°C)

C = observed flash point (°C)

B = ambient atmospheric pressure (kPa)

Results

Temperature (°C) Observations
20 (fresh sample) A blue flash spread across the sample cup.
10 (fresh sample) A blue flash spread across the sample cup.
0 (fresh sample) A blue flash spread across the sample cup.
-18 (fresh sample) A blue flash spread across the sample cup.
-20 (fresh sample) No flash.
-20 (fresh sample) No flash.
-19 (fresh sample) No flash.
-18 A blue flash spread across the sample cup.
-18 (fresh sample) A blue flash spread across the sample cup.
-18 (fresh sample) A blue flash spread across the sample cup.
-20 (fresh sample) No flash.
-20 (fresh sample) No flash.

Atmospheric pressure = 101.49 kPa

Corrected flash point = -18.038ºC

Interpretation of results:
other: Category 1 (extremely flammable liquid) if boiling point <= 35°C and Category 2 (highly flammable liquid) if boiling point > 35°C [based on GHS criteria]
Conclusions:
flash point= - 18 ± 2°C at 101.325 kPa
Executive summary:

The flash point was determined using the closed cup equilibrium method, EU Method A.9. The procedure was repeated until the lowest reproducible temperature at which a flash occurred was determined (using a fresh sample).

The flash point of the test material has been determined to be -18 ±2°C (corrected to a pressure of 101.325 kPa). The UVCB substance 'Naphtha (Fischer-Tropsch), light, C4 -10 - branched and linear' is therefore classified as 'Flam. Liquid 1; H224' if boiling point <= 35°C or as 'Flam. Liquid 2; H225' if boiling point > 35°C [based on GHS criteria].

Description of key information

flash point of the test material (closed cup): -18 ±2°C (corrected to a pressure of 101.325 kPa)

Key value for chemical safety assessment

Flash point at 101 325 Pa:
-18 °C

Additional information

The flash point was determined using the closed cup equilibrium method, EU Method A.9. The procedure was repeated until the lowest reproducible temperature at which a flash occurred was determined (using a fresh sample).

The flash point of the test material has been determined to be -18 ± 2°C (corrected to a pressure of 101.325 kPa).

The substance 'Naphtha (Fischer-Tropsch), light, C4 -10 - branched and linear' is therefore classified as 'Flam. Liquid 1; H224' if boiling point <= 35°C or as 'Flam. Liquid 2; H225' if boiling point > 35°C [based on GHS criteria].