Selenous acid 11140-60-6 7783-00-8 Selenious acid (USP) selenige Saeure dihydroxidooxidoselenium 84920_FLUKA NCI60_003085 229857_ALDRICH CHEBI:26642 [SeO(OH)2] CCRIS 5530 EINECS 231-974-7 HSDB 6065 D05814 Monohydrated selenium dioxide SELENIOUS ACID Selenious acid (H2SeO3) Selenium dioxide, monohydrated NCIMech_000026 211176_ALDRICH