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Diss Factsheets

Physical & Chemical properties

Auto flammability

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 2017-06-08 to 2017-06-09
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Key result
Relative self-ignition temperature:
303.7 °C

Temperature Data

The temperatures which were measured in the experiment are presented in the following table. As a lot of values were recorded, only the values of every 60 minutes (until the oven had reached the chosen temperature) are presented.

Table 2: Presentation of temperatures versus time

Time in min Temperature (test item)
in °C		 Temperature (oven)
in °C
5 21.4 21.5
60 34.3 47.7
120 65.1 83.3
180 97.0 119.2
240 129.4 154.8
300 156.5 191.3
360 196.5 225.9
420 239.0 260.8
480 296.6 296.5
492 400.0 303.7

After cooling down the test item was black, carbonized and expanded. The ZPA3 stopped automatically after ignition at an oven temperature of 303.7 °C.

Conclusions:
The self-ignition temperature of the test item was determined to be 303.7 °C.
Executive summary:

A study was performed according to Regulation (EC) No 440/2008, Method A.16 in order to determine the relative self-ignition temperature of the test substance with the help of an ZPA-3 oven. The test item was placed into a stainless steel cube and was heated from room temperature to an oven temperature of 400 °C (heating rate 5.8 K/min). After self-ignition of the test item at an oven temperature of 303.7 °C the heating stopped and the test item was black, carbonized and expanded. Hence, the self-ignition temperature was determined to be 303.7 °C.

Description of key information

The self-ignition temperature of the test item was determined to be 303.7 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
303.7 °C

Additional information

A study was performed according to Regulation (EC) No 440/2008, Method A.16 in order to determine the relative self-ignition temperature of the test substance with the help of an ZPA-3 oven (reference 4.12-1). The test item was placed into a stainless steel cube and was heated from room temperature to an oven temperature of 400 °C (heating rate 5.8 K/min). After self-ignition of the test item at an oven temperature of 303.7 °C the heating stopped and the test item was black, carbonized and expanded. Hence, the self-ignition temperature was determined to be 303.7 °C.