1,4-Benzenedisulfonic acid, 2,5-dihydroxy-, dipotassium salt 15763-57-2 2,5-Dihydroxy-p-benzenedisulfonic acid, dipotassium salt 2,5-Dihydroxy-para-benzenedisulfonic acid dipotassium salt NSC158150 p-Benzenedisulfonic acid, 2,5-dihydroxy-, dipotassium salt