Sulfur (or Sulphur) is a common element found in the galaxy.

When combined with copper to form copper sulfate it becomes a highly poisonous powder. When the copper sulfate is mixed with water, the copper sulfate forms into blue crystals, yet still has poisonous properties. (TOS novelization: "The Naked Time").

Hadas IV was known for its sulfuric mines. (DS9 novelization: Emissary)

ConnectionsEdit

• Sulfur article at Wikipedia, the free encyclopedia.
• Sulfur article at Memory Alpha, the wiki for canon Star Trek.