They slowly decompose at standard conditions to the superoxides and oxygen, and hydrolyse immediately to the hydroxides when in contact with water.
ðeɪ slˈoʊli dˌiːkəmpˈoʊz æt stˈændɚd kəndˈɪʃənz tə ðə sˌuːpɚɹˈɑːksaɪdz ænd ˈɑːksɪdʒən, ænd hˈaɪdɹəlˌaɪz ɪmˈiːdɪətli tə ðə haɪdɹˈɑːksaɪdz wɛn ɪn kˈɑːntækt wɪð wˈɔːɾɚ.