Accession Number:

ADA242930

Title:

Environmental Fate of Hydrazines

Descriptive Note:

Final rept. Mar 1985-Apr 1989

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION LAS CRUCES NM WHITE SANDS TESTFACILITY

Report Date:

1989-12-01

Pagination or Media Count:

213.0

Abstract:

Kinetic and mechanistic studies of the oxidative reactions of hydrazine, monomethylhydrazine MMH, and unsymmetrical dimethylhydrazine UDMH have been studied to assess the impact of these propellants on the atmosphere. Studies were conducted using an environmental chamber, a packed flow-reactor, and a new type of laminar flow reactor designed to minimize wall effects. Air- oxidation rates in a 6515-liter fluorocarbon-film environmental chamber were found to be much slower than the loss due to adsorption and permeation through the walls. Half-lives of 40, 19, and 60 hours were found for hydrazine, MMH, and UDMH, respectively. Metal surfaces were found to increase the rates of oxidation, and bayerite-coated aluminum corroded aluminum was found to be a particularly effective oxidation catalyst for hydrazine.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE