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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:
23-24 November 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
The study was conducted according to an internationally recognised method, and under GLP. The substance is considered to be adequately characterised. Therefore full validation applies.
Qualifier:
according to guideline
Guideline:
EU Method A.9 (Flash-Point)
Version / remarks:
2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 3679 (Determination of flash point - Rapid equilibrium closed cup method)
Version / remarks:
2015
Deviations:
no
Principles of method if other than guideline:
not applicable
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected on 20 and 21 June 2017 / signed on 04 September 2017
Type of method:
equilibrium method closed cup
Flash point apparatus:
other: Normalab NPV310
Key result
Flash point:
66 °C
Atm. press.:
1 013 hPa

The following tables show the results of the measurements as temperatures where ignition (+) was detected and where not (-).

Table1:Preliminary test

Test item / g

Starting temperature / °C

Temperature / °C

Ignition + / -

2

20.0

76.0

+

2

20.0

85.0

+

2

50.0

79.5

+

 

Table 2: Main test

Test item / g

Temperature / °C

Ignition + / -

Equilibration time / s  Barometric pressure / hPa 

2

76.0

-

 60  1002.2

2

81.0

-

 60 1002.2 

2

86.0

-

 60 1002.2 

2

91.0

-

 60 1002.2 

2

96.0

-

 60 1002.2 

In the main test (constant oven temperature,for each temperature step a fresh sample is used) no ignition was observed up to 96.0 °C within an equilibration time of 60 seconds. Therefore the equilibration time was varied and the ignition flame was dipped into the test item approximately every 10 seconds. The equilibration time was extended to 300 seconds.

Table3: Main test, extended equilibration time (max. 300 seconds)

Test item / g Temperature / °C Ignition + / - Equilibration time / s Barometric pressure / hPa
2 76.0 + 295 1002.2
2 71.0 - 300
2 72.0 + 225
2 71.5 + 80 1003.3
2 71.0 + 170
2 66.0 + 81
2 61.0 - 300
2 62.0 - 300
2 63.0 - 300
2 64.0 - 300
2 65.0 - 300
2 66.0 + 75
2 65.5 - 300
2 66.0 + 68
2 65.5 - 300
2 66.0 + 71
2 65.5 - 300

The lowest flash point corrected to 1013 hPa is rounded down with an accuracy of 0.5 °C: 66.0 °C.

Interpretation of results:
Category 4 (combustible liquids) based on GHS criteria
Conclusions:
The flash point of the test item is therefore 66 °C at 1013 hPa (equilibration time extended to 300 seconds)
Executive summary:

The flash point of the test substance was determined under GLP according to EU Method A.9 (Flash-Point), using a Rapid equilibrium closed cup method (ISO3679, 2015).

The flashpoint of the test item is stated as 66 °C at 1013 hPa (equilibration time extended to 300 seconds).

Description of key information

The substance is NOT classified as a Flammable Liquid according to Regulation (EC) N°1272/2008 (CLP criteria).

and is classified as Combustible Liquids, Category 4 according to UN Globally Harmonized System (GHS criteria).

 

Note that the result obtained on this kind of substance should be largely influence by small amounts of volatile constituents.

Key value for chemical safety assessment

Flash point at 101 325 Pa:
66 °C

Additional information

The flash point of the test substance was determined under GLP according to EU Method A.9 (Flash-Point), using a Rapid-equilibrium closed cup method (ISO3679) using an equilibration time extended to 300 seconds. It is considered as a key study. The result is retained as key data for purpose of CSA.