The effect of two flame retardants on particulate and residue production
Document Type: Report
Author(s): Charles W. Philpot; Gregg M. Johnson; Charles W. George; Walter H. Wallace Jr.; Aylmer David Blakely
Publication Year: 1972

Cataloging Information

  • ammonium sulfate
  • diammonium phosphate
  • fire intensity
  • laboratory experiments
  • particulate emissions
  • retardants
Record Maintained By:
Record Last Modified: December 13, 2016
FRAMES Record Number: 14077


The benefits from fire use - including hazard reduction, silvicultural manipulation, pathogen control, and nutrient recycling - might be forfeited by public reaction to smoke, whether harmful or not. Generally, the public desires alternatives to burning, but might accept fire if direct control of emissions were possible. The effects of diammonium phosphate (DAP) and ammonium sulfate (AS) on particulate emission and fire intensity were investigated. Particulate emission rate and total quantity were increased by DAP to several times those produced from the control. Inversely, very little increase was observed for AS. Since burning rate for AS-treated fuels was also decreased, this retardant might be useful in smoke control through extension of burning periods.

Online Link(s):
Philpot, Charles W. 1972. The effect of two flame retardants on particulate and residue production. Research Paper INT-RP-117. Ogden, UT: USDA Forest Service, Intermountain Forest and Range Experiment Station. 14 p.