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542 CHEMISTRY AND TECHNOLOGY OF EXPLOSIVES

TRINITROPHLOROGLUCINOL

Trinitrophloroglucinol (m. p. 167°C) has not found any practical application,

although several authors have proposed using trinitrophloroglucinol salts, primarily

its lead salt, as an initiator (e.g. Friedrich [33]; Rathsburg [34]; Sorm and Dra-

palova [35]; T. Urbariski and Kruszyriska [36]).

Trinitrophloroglucinol may be obtained in various ways, e.g. from phloro-

glucinol by nitrosation, followed by oxidation with nitric acid (Benedikt [37]):

or from trichlorotrinitrobenzene by boiling with a sodium hydroxide solution

(Sorm and Drapalova [35]):

DINITROPYROCATECHOL

3,5-Dinitropyrocatechol (m. p. 164°C) was prepared by Nietzki and Moll [38]

by nitrating pyrocatechol diacetate with cold cont. nitric acid, followed by

hydrolysis of ester groups with sulphuric acid.