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NITRO DERIVATIVES OF ANILINE^571

HEXANITRODIPHENYLGUANIDINE

This compound was suggested by Jackman and Olsen [42] as an explosive.

The authors prepared it by the nitration of diphenylguanidine.

NITRO DERIVATIVES OF AMINOPHENOLS

TRINITRO-m-PHENYLENEDIAMINE

This explosive (m. p. 285°C) was first obtained by Korner and Contardi [43]

in 1909, using the reaction:

The compound may also be prepared by other methods; for example, van Duin

and van Lennep [26] obtained it by reacting ammonia with trinitroanisidine. They

also investigated its explosive properties.

The compound is known to be stable : when heated at 95°C for 30 days it remains

unchanged. However, on boiling with a dilute sodium hydroxide solution it decom-

poses to trinitroresorcinol and ammonia. It is less sensitive to impact than tetryl,

but more sensitive than picric acid. The initiation temperature is 335°C.

PICRAMIC ACID