Concrete obtained from lichen of Evernia prunastri(Parmeliaceae) by extraction with a mixture of polar and apolar solvents

Flash point

Link to relevant study record(s)

Reference

Endpoint:

flash point of flammable liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

06 February 2018

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:

109 °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	100	-
4	100	115.5	+
4	100	118.0	+
4	98.0	115.5	+

 

In the preliminary test (heating ramp of 5 K/min, ignition flame was dipped into the test item every 1 K) ignitions were observed at 115.5 °C, 118.0 °C and 115.5, respectively.

Table2: Main test, equilibration time : 120 seconds

Test item / g	Temperature / °C	Ignition + / -
4	115.5	-
4	120.5	-

Barometric pressure = 1006.9 hPa

In the main test, no ignition was observed at 115.5 °C and 120.5°C within an equilibration time of 120 seconds.

Subsequently the equilibration time was varied and the ignition flame was dipped into the test item approximately every 10 seconds (see Table 3).Each single test was limited to a maximum duration of 300 seconds or it was stopped if ignition occured.

Table3: Main test,varying equilibration time (max. 300 seconds), ignition attempts approximately every 10 seconds

Test item / g	Temperature / °C	Ignition + / -	Time to ignition / s	Barometric pressure / hPa
4	115.5	+	90	1006.9
4	110.5	+	70
4	105.5	-	-
4	106.5	-	-
4	107.5	-	-
4	108.5	-	-
4	109.5	+	105
4	109.0	+	40
4	108.5	-	-
4	109.0	+	32
4	108.5	-	-
4	109.0	+	35
4	108.5	-	-

The lowest flash point corrected to 1013 hPa was rounded down with an accuracy of 0.5 °C giving a value of 109.0 °C.

Interpretation of results:

GHS criteria not met

Conclusions:

The flash point of the test item is therefore 109.0 °C at 1013 hPa

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 equilibration time was varied and the ignition flame was dipped into the test item approximately every 10 seconds. The equilibration time was extended to a maximum of 300 seconds. The flashpoint of the test item is stated as 109.0 °C (382.15 K) at 1013 hPa.

Description of key information

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

109 °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). It is considered as a key study. The result is retained as key data for purpose of CSA.