Resorcinol, 2,4,6-Trinitro

SYNS 1,3-BENZENEDIOL, 2,4,6-TRINITRO-, BARIUM SALT, HYDRATE (2 1 1) RESORCINOL, 2,4,6-TRINITRO-, BARIUM SALT, HYDRATE (2 1 1)... 

Compounds that have common names are listed under their common as well as their chemical names, but the reference entries may be made under either. For example, styphnic acid has the chemical name 2,4, 6-trinitroresorcinol, but the index entries are under styphnic acid with a cross reference to Resorcinol, 2,4,6-trinitro-, see Styphnic acid. On the other hand, the well-known insecticide DDT is listed with a "see reference to its chemical name and the reference entries are under the latter, "Ethane, l,l,l-trichloro-2,2-bis (p-chlorophenyl). In general, it may be said to be the exception, not the rule, for the common name of a compound not to be listed. All names, common and chemical, are listed alphabetically. 

Copper Resorcinate, Trinitro or Copper Styph-note will be described as Resorcinol, Trinitro, Copper Salt... 

Accdg to Urbanski (Ref 6, p 537), 2,4-DNR cannot be prepd by the conventional method for phenols (ie sulfonation of resorcinol followed by the action of nitric acid), because this method yields the trinitro compd. There are, however, two methods of prepn possible ... 

Resorcinol nitrates readily to the trinitro compound, yellow prisms from water or alcohol, m.p. 175.5°. Styphnic acid is more expensive and less powerful than picric acid. Liouville67 found that styphnic acid exploded in a manometric bomb, at a density of loading of 0.2, gave a pressure of 2260 kilos per sq. cm., whereas picric acid under the same conditions gave a pressure of 2350 kilos per sq. cm. It did not agglomerate to satisfactory pellets under a pressure of 3600 kilos per sq. cm. It is a fairly strong dibasic acid, and its salts are notably more violent explosives than the picrates. Lead styphnate has been used to facilitate the ignition of lead azide in detonators. 

Resorcinol, 5-Methyl, 2,4,6-Trinitro (2,4,6-Tri-nitro-3,5-dioxy-l-methyl benzene or eso-Trinitro-Orcinol). (02N)3C6(OH)2.CH3 mw 259.15 ... 

Since the nitration of resorcinol by the conventional method for phenols (i.e. sulphonation followed by the action of nitric acid) yields a trinitro derivative, two other methods for the preparation of dinitroresorcinol are possible, viz. oxidation of dinitrosorcsorcinol or nitration of resorcylic acid followed by decarboxylation. 

DIHYDROXY-l,3,5-TRINITROBENZENE 3-HYDROXY-2,4,6-TRINITROPHENOL 2,4,6-TRINITRO-BENZENE-l,3-DIOL 2,4,S-TRINITRO-l,3-BENZENEDI-OL 2,4,6-TRINITRORESORCINOL TRINITRO-RESORCINOL pOT) TRINITRORESORCINOL, DRY pOT) TRINITRORESORCINOL, wetted with less than 20% water (DOT)... 

Dinitroresorcine (DNR) forms two isomers 2,4 and 4,6. Unlike in the nitration of some other aromatic molecules (toluene, phenol), it is possible to prepare practically pure dinitro isomers. The position of nitro groups in the ring depends on the reaction conditimis. The 2,4-isomer of DNR can be easily prepared by dinitrosatimi of resorcinol followed by alkaline oxidation of 2,4-dinitrosoresorcinol [8,14]. 2,4-DNR cannot be prepared by sulfonation of resorcinol followed by reaction with nitric acid (method used for phenol) because this method yields the trinitro compound. The 4,6-DNR isomer can be prepared in two ways (a) by nitration of 4,6-diacetylresorcinol and (b) directly by nitration of resorcinol using 98 % nitric acid at low temperatures (between —20 and —15 °C) [8],... 

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