Osmic tetroxide


  • Webster's Revised Unabridged Dictionary
    • Osmic tetroxide (Chem) a white volatile crystalline substance, OsO4, the most stable and characteristic of the compounds of osmium. It has a burning taste, and gives off a vapor, which is a powerful irritant poison, violently attacking the eyes, and emitting a strong chlorinelike odor. Formerly improperly called osmic acid.
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