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Na2CO32HNaCO32H2O

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Trona \Tro"na\, n. [Of Egyptian or North African origin.] (Chem.
   & Min.)
   A native double salt, consisting of a combination of neutral
   and acid sodium carbonate, {Na2CO3.2HNaCO3.2H2O}, occurring
   as a white crystalline fibrous deposit from certain soda
   brine springs and lakes; -- called also {urao}, and by the
   ancients {nitrum}.
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