METHOD OF PREPARING PICRIC ACID Russian patent published in 1999 - IPC

Abstract RU 2128642 C1

FIELD: chemical industry. SUBSTANCE: picric acid or 2,4,6-trinitrophenol is widely used for manufacturing explosives, drugs and dyes in other fields. Method comprises nitrating o- nitrophenol and/or p-nitrophenol so that the resulting product is soluble in reaction medium. Nitration is continued till picric acid is formed, and the latter is precipitated. Method does not use noble gas atmosphere, and no special equipment is used. EFFECT: more efficient preparation method. 16 cl, 4 ex, 4 tbl

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RU 2 128 642 C1

Authors

Loran Bernar

Paskal' Metiv'E

Dates

1999-04-10—Published

1995-09-08—Filed