[hahy-druh-suhl-fahyd, -fid]
a compound containing the univalent group –HS.
Also, hydrosulphide.

1840–50; hydro-2 + sulfide

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Water wash may also be used to protect overhead condensers in the main column subjected to fouling from ammonium hydrosulfide.
Barium sulfide slowly decomposes in water, forming barium hydroxide and barium hydrosulfide.
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