Accession Number:

ADA616444

Title:

Bishydrazinium and Diammonium Salts of 4,4',5,5'-Tetranitro-2,2'-biimidazolate (TNBI): Synthesis and Properties

Descriptive Note:

Journal article

Corporate Author:

ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL NJ EXPLOSIVES RESEARCH BRANCH

Personal Author(s):

• Paraskos, Alexander J.
• Cooke, Edward D.
• Caflin, Kelley C.

Report Date:

2015-01-01

Pagination or Media Count:

5.0

Abstract:

The diammonium 1 and bishydrazinium 2 salts of 4,4 ,5,5 -tetranitro-2,2 -biimidazolate TNBI were synthesized and their physical properties as well as predicted explosive performance characteristics are described. These dianionic salts are easily formed in good yields by reaction of TNBI with aqueous solutions of the cationic species. TNBI is synthesized from 2,2 -biimidazole, which is ultimately synthesized by the condensation of aqueous glyoxal with ammonium acetate. The compounds were characterized by NMR spectroscopy, vibrational FT-IR and Raman spectroscopy, elemental analysis, thermal analysis DSC, VTS and calorimetry, and small scale safety testing impact, friction, ESD. The measured densities and heats of formation are reported. The materials show promise for use in IM explosive and propellant formulations due to the combination of their calculated performances, thermal stability and insensitivity to stimuli.

Descriptors:

• *AMMONIUM COMPOUNDS
• *EXPLOSIVES
• *PHYSICAL PROPERTIES
• *SALTS
• *SYNTHESIS(CHEMISTRY)
• DENSITY
• ENERGETIC PROPERTIES
• EXCHANGE REACTIONS
• HEAT OF FORMATION
• SENSITIVITY
• THERMAL STABILITY

Subject Categories:

• Inorganic Chemistry
• Organic Chemistry
• Physical Chemistry
• Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE