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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:
14 June to 09 August 2016
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.
Reason / purpose for cross-reference:
reference to other study
Qualifier:
according to guideline
Guideline:
EU Method A.9 (Flash-Point)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.6315 (Flammability)
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 2719 (Determination of flash point - Pensky-Martens closed cup method)
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected on October 13 and 14, 2014 / signed on April 08, 2015
Type of method:
non-equilibrium method closed cup
Flash point apparatus:
Pensky-Martens apparatus
Key result
Flash point:
ca. 78 °C
Atm. press.:
ca. 101 325 Pa

Pre-Test for Safety

A safety test was performed in study 15110601G906 determination of the boiling point (endpoint 4.3). A small amount of the test item was heated in a test tube in an aluminium block with a Bunsen burner. A boiling chain was observed at approx. 170 °C. The chain broke at 167°C. After cooling down visual no changes of the test item was observed.

Determination of the Flash point

No reproducible flash point could be measured when the test was performed without argon.

Table 4.11/2.-Findings under Argon

Program

Expected flash point (setting)

in °C

Flash point (found)
in °C

Mean
in °C

Notes

Search

167

83.0

 

not used for calculation(pre-test)

EN ISO 2719-B

83

77.5

78.0

difference < 2°C

EN ISO 2719-B

83

78.5

  The reference measurement with Dodecan under argon was performed with 84.5 °C

Evaluation and Result

The flash point is given as the mean value of the duplicate determination. The measured flash point is therefore 78.0 ± 0.5°C (corresponding to 351.2 ± 0.5 K).

Discussion

First a performance including two pre-tests and a main test with two experiments was conducted. No reproducible flash point could be measured when the study was performed without argon. a second performance including a pre-test and a main test with two experiments were performed under Argon using a flashpoint tester. This performance yield reliable results. The difference between the two values which were measured under Argon was below 2 K.

The reference measurement under argon was valid. For this reason, the determination was considered valid.

Interpretation of results:
Category 4 (combustible liquids) based on GHS criteria
Conclusions:
The measured flash point is therefore 78.0 ± 0.5°C (corresponding to 351.2 ± 0.5 K).
Executive summary:

The flash point of the test substance was determined under GLP according to EU Method A.9 (Flash-Point), using a non-equilibrium closed cup method (ISO2719 - Part B).

The flash point of the test item has been determined under argon to be 78.0°C (351.2K), which is the mean value of two independent valid determinations.

The flash point of test substance is above the classification thresholds of 60°C of the Regulation (EC) No. 1272/2008 (CLP criteria) and lower than 93°C, the threshold of the UN Globally Harmonised System (GHS).

Therefore the test substance is NOT classified as a flammable liquid according to CLP criteria but is classified as a Flammable Liquid Category 4 according to UN Globally Harmonised System (GHS).

Description of key information

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

The substance is classified as Flammable Liquid Category 4 according to UN Globally Harmonized System (GHS criteria).

Key value for chemical safety assessment

Flash point at 101 325 Pa:
78 °C

Additional information

The flash point of the test substance was determined under GLP according to EU Method A.9 (Flash-Point), using a non-equilibrium closed cup method (ISO2719 - Part B). It was considered as a key study. The result was retained as key data for purpose of CSA.

This study was relevant for the classification regarding flammable properties.