2,7-Naphthalenedisulfonicacid, 3-hydroxy-, disodium salt (8CI,9CI);2-Hydroxy-3,6-naphthalenedisulfonicacid disodium salt;2-Naphthol-3,6-disulfonic acid disodium salt;Disodium2-hydroxy-3,6-naphthalenedisulfonate;Fericon;R Salt;
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