The lump material, contained in a metal dish, may be heated in air to slightly below 200 °C without igniting, although it ignites readily when touched by an open flame.
Bahan benjolan, yang terkandung dalam piring logam, dapat dipanaskan di udara sedikit di bawah 200 °C, tanpa dipicu, meskipun menyala mudah ketika disentuh oleh api terbuka.