in neat (no solvent) noticable at temp. above about 800°C in vac., short-circuit or cathode ray furnace;;
参考文献
Hackspill, L.; Platzer, N.
Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1958 , vol. 246, p. 2969 - 2972
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Gmelin Handbook: Ca: MVol.B3, 83, page 834 - 836