2H-Pyran, tetrahydro-3-(phenylmethyl)-

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

May 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

The study was conducted according to an internationally recognised method. No deviation affected the quality of the study. The substance is considered to be adequately characterised. Therefore validation applies without restrictions.

Qualifier:

according to guideline

Guideline:

EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))

Version / remarks:

Regulation (EC) n°440/2008

Qualifier:

according to guideline

Guideline:

other: NF T 20-037

Version / remarks:

(now repealed)

Qualifier:

equivalent or similar to guideline

Guideline:

other: IEC 79-4

Version / remarks:

(1975)

Qualifier:

equivalent or similar to guideline

Guideline:

DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)

Qualifier:

equivalent or similar to guideline

Guideline:

BS-4056 (Method of test for ignition temperature of gases and vapours)

GLP compliance:

no

Remarks:

not required for physchem data, unless relating to CLP

Specific details on test material used for the study:

Storage conditions : In the original glass container at ambient temperature in a dark place.

Key result

Auto-ignition temperature:

405 °C

Atm. press.:

97.9 kPa

Preliminary test

The lowest auto-ignition temperature was found around 407°C (corrected value) with a volume of 90 μL. Time lag was 14 seconds, atmospheric pressure was 98.0 kPa, and 38% relative humidity.

Main test

The volume of test item injected in the oven was 90 μL.

The self ignition runs for each assay are summarized in the table below:

Assay n°	Auto-Ignition Temperature (corrected) °C	Time lag (s)	Atmospheric pressure (kPa)	Relative humidity (%)
1	408	9	97.9	50
2	406	14	97.7	46
3	405	9	97.9	53
4	407	10	97.9	49
5	406	13	98.1	53

For safety reasons, the retained Ignition temperature was the lowest temperature at which ignition occurs, i.e. 405°C ± 3 °C (corrected temperature ± accuracy).

Conclusions:

This parameter/method is not relevant for classification, however the information is useful regarding process safety and potential additional fire hazard. No particular hazard is anticipated in normal conditions of storage.

Executive summary:

The auto-ignition temperature of the test substance was measured according to NF T 20-037 method (listed in EU A15 guideline).

Test material was injected into a heated flask, until the lowest temperature at which ignition occurs was determined. The relevant parameters (volume, time lag, atmospheric pressure) were recorded for the final result. The lowest value of five consistent replicates was retained.

The test substance has been determined to have an auto-ignition temperature of 405°C.

Description of key information

Experimental Auto-Ignition Temperature = 405°C under 97.9 kPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

405 °C

Additional information

A fully reliable experimental study, conducted according to a recognized EU/NF method, is available. It is considered as a key study, and the result is retained as key data.

This parameter is not relevant for classification, however the information is useful regarding process safety and potential additional fire hazard.

No particular hazard is anticipated in normal conditions of storage.