Ethylenediamine salt of 5-nitrotetrazole and preparation

A process for preparing the ethylenediamine salt of 5-nitrotetrazole, which consists essentially of the steps of:

• a. dissolving two equivalents of ammonium 5-nitrotetrazole in methanol forming thereby a first solution;
• b. adding one equivalent of ethylenediamine to said first solution, forming thereby a second solution;
• c. allowing sufficient interaction time to permit said ammonium 5-nitrotetrazole and said ethylenediamine in said second solution to react to substantial completion;
• and
• d. removing said methanol.

A process for preparing the ethylenediamine salt of 5-nitrotetrazole, which comprises the steps of:

• a. dissolving sodium nitrite and cupric sulfate in water, forming thereby a first solution:
• b. dissolving 5-aminotetrazole, cupric sulfate and sulfuric acid in water, forming thereby a second solution;
• c. adding said second solution to said first solution, forming thereby a third solution;
• d. basifying said third solution using a solution of sodium hydroxide, forming thereby a fourth solution;
• e. heating said fourth solution, whereby the copper salt of 5-nitrotetrazole is converted to the sodium salt thereof, and whereby cupric oxide is simultaneously formed and precipitates from said fourth solution;
• f. removing said precipitated cupric oxide;
• g. acidifying said fourth solution using an equivalent amount of sulfuric acid, forming thereby a fifth solution;
• h. extracting said fifth solution using at least one water-insoluble amine dissolved in an organic diluent in which said 5-nitrotetrazole is also soluble, while the ammonium salt of 5-nitrotetrazole precipitates therefrom, producing thereby an organic extract;
• i. drying said organic extract;
• j. treating said organic extract with anhydrous ammonia producing thereby an ammonium salt precipitate;
• k. collecting said ammonium salt precipitate;
• l. dissolving two equivalents of said dried ammonium salt precipitate in methanol forming thereby a sixth solution;
• m. adding one equivalent of ethylenediamine to said sixth solution initiating thereby a chemical reaction;
• n. waiting a sufficient amount of time for said chemical reaction to go to substantial completion;
• and
• o. removing said methanol.

A process for preparing the ethylenediamine salt of 5-nitrotetrazole, which comprises the steps of:

• a. dissolving sodium nitrite and cupric sulfate in water, forming thereby a first solution:
• b. dissolving 5-aminotetrazole, cupric sulfate and sulfuric acid in water, forming thereby a second solution;
• c. adding said second solution to said first solution, forming thereby a third solution;
• d. basifying said third solution using a solution of sodium hydroxide, forming thereby a fourth solution;
• e. heating said fourth solution, whereby the copper salt of 5-nitrotetrazole is converted to the sodium salt thereof, and whereby cupric oxide is simultaneously formed and precipitates from said fourth solution;
• f. removing said precipitated cupric oxide:
• g. acidifying said fourth solution using an equivalent amount of sulfuric acid, forming thereby a fifth solution;
• h. extracting said fifth solution using at least one water-insoluble amine dissolved in an organic diluent in which said 5-nitrotetrazole is also soluble, while the ethylenediamine salt of 5-nitrotetrazole precipitates therefrom, producing thereby an organic extract;
• i. drying said organic extract;
• j. treating said organic extract with ethylendiamine producing thereby an ethylenediamine salt precipitate;
• and
• k. collecting said ethylenediamine salt precipitate.