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perchromic acid
perchromic adj. 
/pəˈkrəʊmɪk/,
Brit. /pəːˈkrəʊmɪk/
, /pəːˈkrəʊmɪk//pəˈkrəʊmɪk/U.S. /pərˈkroʊmɪk/
perchromic acid, an acid containing chromium in one of its higher oxidation states./pərˈkroʊmɪk/ΚΠ
1854 J. Scoffern in Orr's Circle Sci., Chem. 449 Solutions containing perchromic acid possess a beautiful blue tint.
1990 Analyt. Lett. 23 703 The formation of blue perchromic acid represents one of the most sensitive and selective tests for the identification of chromium.
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