Accession Number:

AD0684590

Title:

DEFLAGRATION AND DEFLAGRATION LIMITS OF SINGLE CRYSTALS OF AMMONIUM PERCHLORATE

Descriptive Note:

Final rept. 1 Jun 1965-30 Jun 1968

Corporate Author:

CALIFORNIA UNIV BERKELEY DEPT OF CHEMICAL ENGINEERING

Report Date:

1968-06-30

Pagination or Media Count:

111.0

Abstract:

Using a new technique, the deflagration pressure limit was measured by imposing a known linear temperature gradient along the length of the ammonium perchlorate sample and igniting the warmer end. The pressure was adjusted so that the flame would not propagate through the entire solid, and the length remaining unburned determined the limiting solid temperature corresponding to the set pressure. The AP single crystal deflagration rates were measured using high-speed motion photography and were essentially the same in helium and nitrogen ambient atmospheres. In direct contrast to the catalytic effect of KMnO4 on AP thermal decomposition, a preliminary study showed that 0.4-2.0 mole KMnO4 isomorphously substituted into the AP crystal lattice prevented deflagration from occurring.

Subject Categories:

  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE