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oxypicric
oxypicric adj.
Brit. 
/ˌɒksɪˈpɪkrɪk/
, /ˌɒksɪˈpɪkrɪk/U.S. /ˌɑksiˈpɪkrɪk/
= styphnic adj./ˌɑksiˈpɪkrɪk/ΚΠ
1850 Philos. Trans. (Royal Soc.) 140 469 When meta-furfurol is digested with strong nitric acid, it is changed into a nitrogenated crystallizable acid, which is either oxypicric acid, or a closely analogous compound.
1934 Chem. Rev. 14 251 The following methods were worked out:..boiling chrysamic acid, styphnic, or Erdmann's oxypicric acid with either bleaching powder or potassium chlorate.
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