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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:
20-02-2018 to 26-07-2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Guideline study performed under GLP. All relevant validity criteria were met.
Qualifier:
according to guideline
Guideline:
EU Method A.9 (Flash-Point)
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 2719 (Determination of flash point - Pensky-Martens closed cup method)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: UN Transport of Dangerous Goods: Manual of Tests and Criteria: ST/SG/AC.10/11/Rev.6 Paragraph 32.4.1: Non-Viscous Flammable Liquids (2015)
Deviations:
no
Qualifier:
according to guideline
Guideline:
ASTM D93 (Standard test methods for flash point by pensky-martens closed cup tester)
Deviations:
no
Qualifier:
equivalent or similar to guideline
Guideline:
other: ASTM D7094: "Standard Test Method for Flash Point by Modified Continuously Closed Cup (MCCCFP) Tester", 2012.
Deviations:
no
GLP compliance:
yes
Type of method:
equilibrium method closed cup
Flash point apparatus:
other: Eraflash flash-point tester
Flash point:
124 °C
Atm. press.:
101.325 kPa
Remarks on result:
other: Duplicate determination; completed at atmospheric pressure

Preliminary Test:

Starting at 25°C, an attempt was made to ignite the vapour of the test item for every 2°C temperature rise. The test cup was heated at a rate of 5 ± 0.5°C/minute. No flash-point was observed below the temperature at which reaction and/or degradation of the test item occurred (i.e. 105°C). Therefore the preliminary test was repeated. Starting at 25°C the ignition source was applied for every 2°C temperature rise. The estimated flashpoint was 123.5 °C.

 

Main Study

Two tests were performed. The test cup was heated at a rate of 5 ± 0.5°C/minute. Starting at 100°C, ignition was tested for every 2°C temperature rise. Determination 1: 124.5 °C and Determination 2: 126.5 °C: Lowest flash point = 124 °C.

Interpretation of results:
GHS criteria not met
Remarks:
Criteria used for interpretation of results: EU
Conclusions:
The flash point of the test item was determined to be 124 °C at 101.325 kPa.
Executive summary:

The flash point was determined according to EU Method A.9 using an Eraflash flash-point tester in the closed cup method consistent with ISO 2719, ASTM D93 and ASTM D7094: Modified Continuously Closed Cup Flash Point (MCCCFP) test under GLP. The Eraflash tester employs a small volume of test item which reduces the risk of fires or other uncontrolled reactions of substances with an unknown flash point. The test cup was filled with approximately 2 ml test item and placed in the holder of the flash-point tester. The sample was stirred during heating. The ignition of the sample vapour was performed by an electric arc and ignition was automatically detected by the flash point tester. The flash-point is automatically corrected for atmospheric pressure by the flash point tester. Following a preliminary test starting at 25°C, an attempt was made to ignite the vapour of the test item for every 2°C temperature rise. The test cup was heated at a rate of 5 ± 0.5°C/minute. No flash-point was observed below the temperature at which reaction and/or degradation of the test item occurred (i.e. 105°C). Therefore, the preliminary test was repeated. Starting at 25°C the ignition source was applied for every 2°C temperature rise. The estimated flashpoint was 123.5 °C. The definitive test was conducted in duplicate. Starting at 100°C, respectively. Ignition was tested for every 2°C temperature rise. Test 1 indicated a flash point of 124.5°C. Test 2 indicated a flash point of 126.5°C. Under the conditions of the study, the flash-point of the test item is 124°C at 101.325 kPa.

Applicant assessment indicates: comparison to ISO 2719: 2016 and ASTM D3278: 2011 indicates that for viscous liquids that the test can expect a repeatabily of ± 5°C. Within ASTM D7094: 2017a, repeatability of ± 4.1°C is indicated. Lower repeatabilities of ± 2.3°C have been reported for Eraflash method. The duplicate test results are within the above repeatability ranges.

Description of key information

FP: 124 °C at 101.325 kPa atmospheric pressure, EU Method A.9, 2018

Key value for chemical safety assessment

Flash point at 101 325 Pa:
124 °C

Additional information

Key study : EU Method A.9, 2018 : The flash point was determined according to EU Method A.9 using an Eraflash flash-point tester in the closed cup method consistent with ISO 2719, ASTM D93 and ASTM D7094: Modified Continuously Closed Cup Flash Point (MCCCFP) test under GLP. The Eraflash tester employs a small volume of test item which reduces the risk of fires or other uncontrolled reactions of substances with an unknown flash point. The test cup was filled with approximately 2 ml test item and placed in the holder of the flash-point tester. The sample was stirred during heating. The ignition of the sample vapour was performed by an electric arc and ignition was automatically detected by the flash point tester. The flash-point is automatically corrected for atmospheric pressure by the flash point tester. Following a preliminary test starting at 25°C, an attempt was made to ignite the vapour of the test item for every 2°C temperature rise. The test cup was heated at a rate of 5 ± 0.5°C/minute. No flash-point was observed below the temperature at which reaction and/or degradation of the test item occurred (i.e. 105°C). Therefore, the preliminary test was repeated. Starting at 25°C the ignition source was applied for every 2°C temperature rise. The estimated flashpoint was 123.5 °C. The definitive test was conducted in duplicate. Starting at 100°C, respectively. Ignition was tested for every 2°C temperature rise. Test 1 indicated a flash point of 124.5°C. Test 2 indicated a flash point of 126.5°C. Under the conditions of the study, the flash-point of the test item is 124°C at 101.325 kPa.

Applicant assessment indicates: comparison to ISO 2719: 2016 and ASTM D3278: 2011 indicates that for viscous liquids that the test can expect a repeatability of ± 5°C. Within ASTM D7094: 2017a, repeatability of± 4.1°C is indicated. Lower repeatability with viscous test items± 2.3°C have been reported for Eraflash method. The duplicate test results are within the above repeatability ranges.