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Physical & Chemical properties

Stability: thermal, sunlight, metals

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Description of key information

Thermal decomposition and overall weight loss onset occurs at 324 ˚C, excluding minimal solvent content.

Additional information

Thermal stability of the test substance was determined using Thermogravimetric Analysis (TGA)

TGA is used to measure weight loss, i.e. decomposition, as a function of time and/or temperature. These analyses were performed using a TA Instruments Q5000IR. High resolution TGA allows a change in heating rate at temperatures where weight loss is occurring. A maximum heating rate is prescribed via computer control based on a resolution designed to give resolution of peaks, however, the heating rate slows to near isothermal conditions during weight loss.

The first weight loss event appears at a derivative peak of 92 ˚C and accounts for ~2.2% weight loss of the material. This is followed by a second (most significant) weight loss event at a derivative peak of 345 ˚C, accounting for ~83.3% weight loss. The third weight loss event occurs at a derivative peak of 422 ˚C and accounts for ~10.8% weight loss, up through exposure to 700 ˚C.

With a maximum temperature ramp of 10 °C per minute and a resolution setting of 3 in an atmosphere of nitrogen, overall weight loss onset occurs at 324 ˚C, excluding minimal solvent content.

Justification for classification or non-classification

The test material is stable to thermal decomposition at temperatures up to 324°C.