Tetraalkylammonium hydroxides, like alkali metal hydroxides, are very strong bases that react with atmospheric carbon dioxide to form carbonates.
tˌɛtɹɑːlkˌɪlɐmˈoʊniəm haɪdɹˈɑːksaɪdz, lˈaɪk ˈælkəlˌaɪ mˈɛɾəl haɪdɹˈɑːksaɪdz, ɑːɹ vˈɛɹi stɹˈɔŋ bˈeɪsᵻz ðæt ɹɪˈækt wɪð ˌætməsfˈɛɹɪk kˈɑːɹbən daɪˈɑːksaɪd tə fˈɔːɹm kˈɑːɹbənˌeɪts.