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EC number: 231-143-9
CAS number: 7440-33-7
Sample is a self-heating substance of Division 4.2 Packaging group III
The self-ignition temperature for tungsten metal was reported to be 310
°C (particle size not reported). Also, tungsten metal was tested for
self-heating and, at the particle size tested (0.6-0.9 um), classifies
as a Self-heating, Category 2 substance under CLP.
from a test conducted according to UN test method N4 resulted in
ignition of the 100 mm cubes at 140, 120, and 100 °C. However
no ignition was observed for the 25 mm cube at 140 °C.
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