Accession Number : ADA326080

Title :   Advanced Streaming Agent Development Volume 1 - Silicon Compounds.

Descriptive Note : Final rept. Nov 95-Apr 96,

Corporate Author : NEW MEXICO ENGINEERING RESEARCH INST ALBUQUERQUE

Personal Author(s) : Gobeli, Garth W. ; Tapscott, Robert E. ; Kaizerman, Jacob A.

PDF Url : ADA326080

Report Date : APR 1996

Pagination or Media Count : 166

Abstract : The objective of the overall effort is to develop new chemical compounds as Halon 1211 replacements. Four families of compounds are particularly promising-phosphorus nitrides, metal compounds, silicon compounds, and tropodegradable halocarbons. This report is Volume I of a 5-volume series of reports: Volume II covers metal compounds; Volume III, phosphorus compounds; Volume IV, tropodegradable halocarbons; and Volume V, laboratory-scale streaming tests. This document assesses silicon compounds as potential halon substitutes. Silicon compounds have lower atmospheric lifetimes than do the closely related carbon compounds. Thus, all other things being equal, Global Warming Potentials (GWP) and Ozone Depletion Potentials (ODP) are lower. To avoid toxicity and stability problems, it is essential that halogen atoms (fluorine, chlorine, bromine, and iodine) not be attached directly to the silicon atom. Such molecules are highly susceptible to hydrolysis with the formation of hydrogen halides. Moreover, the number of hydrogen atoms must be kept low to decrease flammability. With these targets in mind, an assessment of the properties and syntheses of silicon compounds was undertaken. Based on this assessment, a number of silanes and siloxanes containing bromocarbon substituents are recommended for further evaluation.

Descriptors :   *SILICON COMPOUNDS, DEPLETION, STABILITY, MOLECULES, POLYMERS, TOXICITY, ATOMS, NITRIDES, SILOXANES, FLUORINE, HEATING, SILANES, IODINE, SUBSTITUTES, HYDROLYSIS, HALOGENATED HYDROCARBONS, OZONE, METAL COMPOUNDS, CHEMICAL COMPOUNDS, FLUORINATED HYDROCARBONS, BROMINE, HALOGENS, FLAMMABILITY, CARBON COMPOUNDS, HYDROGEN COMPOUNDS, PHOSPHORUS COMPOUNDS.

Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Atmospheric Physics
      Air Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE