However, these methods are problematic because the potassium metal tends to dissolve in its molten chloride and vaporises significantly at the operating temperatures, potentially forming the explosive superoxide.
haʊˈɛvɚ, ðiːz mˈɛθədz ɑːɹ pɹˌɑːbəlmˈæɾɪk bɪkˈʌz ðə pətˈæsiəm mˈɛɾəl tˈɛndz tə dɪsˈɑːlv ɪn ɪts mˈoʊltən klˈoːɹaɪd ænd vˈeɪpɚɹˌaɪzᵻz sɪɡnˈɪfɪkəntli æt ðɪ ˈɑːpɚɹˌeɪɾɪŋ tˈɛmpɹɪtʃɚz, pətˈɛnʃəli fˈɔːɹmɪŋ ðɪ ɛksplˈoʊsɪv sˌuːpɚɹˈɑːksaɪd.