Some Class D dry powder extinguishers designed for metal fires are effective, depriving the fire of oxygen and cooling the alkali metal.
sˌʌm klˈæs dˈiː dɹˈaɪ pˈaʊdɚɹ ɛkstˈɪŋɡwɪʃɚz dɪzˈaɪnd fɔːɹ mˈɛɾəl fˈaɪɚz ɑːɹ ɪfˈɛktɪv, dᵻpɹˈaɪvɪŋ ðə fˈaɪɚɹ ʌv ˈɑːksɪdʒən ænd kˈuːlɪŋ ðɪ ˈælkəlˌaɪ mˈɛɾəl.