Nitrotetrazolate

Copper(II), di-/Lt-bromobis[bromo(pyridine)-structure, 2, 108 Copper 8-hydroxyquinolinate biocidal activity mechanism, 1, 401 fungicide, 1, 399 Copper nitrotetrazole as propellants, 5, 837 Copper phthalocyanine, 1, 333-334 colour and constitution, 1, 345 Coproporphyrin, 4, 382 Coproporphyrin, dehydro-, 4, 382... 

An acidified solution of the sodium salt was allowed to evaporate during 3 days and spontaneously exploded 2 weeks later. The nature of the explosive species, possibly the aci-tetrazolic acid, was being sought [1]. The silver and mercury salts are explosive [2], The chemical properties of the free nitrotetrazole have been studied. The sodium salt tetrahydrate loses water above 50°C, greatly increasing its friction and shock sensitivity [3],... 

Preparation of High Purity Sodium 5-Nitrotetrazolate (NaNT) An Essential Precursor to the Environmentally Acceptable Primary Explosive, DBX-1... 

Abstract. Sodium 5-nitrotetrazolate dihydrate (NaNT) is a useful precursor compound for the synthesis of lead-free primary explosives however, currently employed syntheses for the compound are tedious, dangerous, and plagued by impurities. Through comprehensive analysis, we elucidate the identity of the most detrimental impurities and further report an improved procedure for preparation of NaNT, which greatly improves the purity, while avoiding the handling of acid cop-... 

Preparation of High Purity Sodium 5-Nitrotetrazolate (NaNT)... 

Given the role that low thresholds of 5-AT and 1H tetrazole impurities clearly play in the successful synthesis of DBX-1 from NaNT, we endeavoured to develop a procedure for synthesizing pure NaNT as efficiently as possible, while avoiding the tedious, time consuming, and reduced yield Cu11 titration and filtration, which is currently required. As an added refinement, we also desired to eliminate the handling of the intermediate acid salt of copper(II) 5-nitrotetrazolate, Cu(NT)2 HNT ... 

Our new method of isolating sodium nitrotetrazolate dihydrate produces material in high yield, without the intermediate handling of sensitive explosive compounds. This produced NaNT is of sufficient purity for the preparation of DBX-1 of the quality that is required to replace lead azide. However, it does appear that the DBX-1 used as a seed crystal in the synthesis of DBX-1 influences the behavior of the end product. 

CAUTION Sodium nitrotetrazolate dihydrate is an energetic material with sensitivity to various stimuli. Particular care should be taken to not excessively dry the material, as anhydrous NaNT is considerably more sensitive than the dihydrate. While we encountered no issues in the handling of this material, proper protective measures (face shield, ear protection, body armor, Kevlar gloves, and earthened equipment) should be used at all times. 

Sodium Nitrotetrazolate Dihydrate (NaNT) Anhydrous aminotetra-zole (8.48 g, 0.10 mol) and copper sulfate pentahydrate (0.2 g, 0.8 mmol) were added to a solution of nitric acid (9 mL, 65 %) in distilled water (60 mL). This was added to a pre-cooled solution of sodium nitrite (20.8 g, 0.30 mol) and cupric sulfate pentahydrate (11 g, 0.044 mol) in distilled water (100 mL). The solution was maintained at 15 to 18 °C during the addition by means of a cool water bath. After addition, the solution was stirred for 30 min at the same temperature... 

Hydrazotctrazolc. 0826 Lead 5.5 -azotctrazolidc. 1020 Mercury 5.5 -azotctrazolidc. 0980 Mercury(II) 5-nitrotetrazolide, 0981 2-Methyltetrazole, 0814 2-Methy 1-5 -viny ltetrazole, 1511 l-(2-Naphthyl)-3-(5-tetrazolyl)triazene, 3394 5-/V-Nitroaminotctrazolc. 0415 1 -(2-Nitrophenyl)-5-phenyltetrazole, 3 602 5-Nitro-2-picryltetrazole, 2638 5-Nitrotetrazole, 0387... 

Nitrotetrazole is readily prepared from the diazotization of 5-aminotetrazole in the presence of excess sodium nitrite and is best isolated as the copper salt complex with ethylenediamine. The salts of 5-nitrotetrazole have attracted interest for their initiating properties. The mercury salt is a detonating primary explosive. The amine salts of 5-nitrotetrazole are reported to form useful eutectics with ammonium nitrate. ... 

M. J. KamletandW.H. Gilligan, Synthesisof Mercuric5-Nitrotetrazole , ASWC/WOZ/TR-Zd-J d, AD-A036086 (1976), Naval Surface Weapons Centre, White Oak, Maryland. 

Aminotetrazole (91) reacts with potassium permanganate in excess aqueous sodium hydroxide to yield the disodium salt of 5-azotetrazole (92). 5-Azotetrazole is unstable and attempts to isolate it by acidification yields 5-hydrazinotetrazole (93). Diazotization of 5-aminotetrazole (91) in the presence of excess sodium nitrite yields 5-nitrotetrazole (94), a powerful explosive whose mercury and silver salts are primary explosives. ... 

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