Sentence Examples


  • Tetrammine purpureo-salts [RCo(NH3)4 H20]X2.
  • Pentammine purpureo-salts [R Co(NH 3) 5 ]X 2 where X = Cl, Br, N03, N02, 1S04, &c.
  • The pentammine purpureo-salts are formed from the luteo-salts by loss of ammonia, or from an air slowly oxidized ammoniacal cobalt salt solution, the precipitated luteosalt being filtered off and the filtrate boiled with concentrated acids.
  • They are formed by the action of nitrous fumes on ammoniacal solutions of cobaltous salts, or purpureo-salts, or by the mutual reaction of chlorpurpureosalts and alkaline nitrites.
  • They are of a reddish colour and usually crystallize well; on heating with concentrated acids are usually transformed into the purpureo-salts.

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