- Author
- Brenden, J. J.
- Title
- Effect of Fire-Retardant and Other Inorganic Salts on Pyrolysis Productsof Ponderosa Pine at 250 deg and 350 deg.
- Coporate
- Forest Products Lab., Madison, WI
- Report
- Research Paper FPL 80, October 1967, 19 p.
- Distribution
- Available from National Technical Information Service
- Keywords
- forestry | fire retardants | inorganic salts | pyrolysis products | wood | fire retardant treatments
- Abstract
- Basic information was obtained on the pryolysis reaction and products formed when wood treated with fire-retardant and other salts was pyrolyzed at 250 deg and 350 deg C. This information will be useful in the systematic evaluation and selection of improved fire-retardant treatments for wood. Fourteen inorganic chemicals were used to treat wood shaving samples, which were then pyrolyszed in vacuum at 250 deg and 350 deg C. the pyrolysis products of untreated wood and chemically treated wood were separated into four fractions by vacuum distillation. The fractions were: a char residue, low vapor pressure tars, water, and "noncondensable" gases. The flammability of wood is normally associated with the volatile tar fraction.