32 FABRICARE BULLE TIN NO. 761 CELLULOSE FIBERS (plant) cotton linen ramie rayon PROTEIN FIBERS (animal) silk wool SYNTHETIC FIBERS acetate acrylic modacrylic nylon olefin polyester spandex MINERAL FIBERS glass metallic metallic (encased)* yellow flame burns quickly burns in short jumps burns in short jumps yellow flame melts melts melts melts melts melts does not burn glows, does not burn fuses and shrinks burning wood or paper burning wood or paper burning hair burning hair acetic acid or vinegar acrid (bitter or sharp odor) acrid (bitter or sharp odor) burning wax chemical odor sweet odor musty none none none grey soft/fluffy ash no ash crushable black bead crushable black bead hard bead, cannot crush hard bead, cannot crush hard bead, cannot crush amber bead, can- not crush hard bead, cannot crush hard bead, cannot crush soft, sticky, gummy may change shape original shape hard bead affected by strong acids, absorbs water, potential to shrink loses strength when wet, heat sensitive, poor dimensional stability, potential to shrink affected by strong alkalies, alco- hol, salt, and light, damaged by chlorine bleach affected by strong alkalies, felt shrinks, damaged by chlorine bleach soluble in acetone and acetic acid 33% or stronger, heat sensitive affected by heat, absorbs oily stains, does not absorb moisture affected by heat, absorbs oily stains, does not absorb moisture affected by heat, absorbs oily stains, does not absorb moisture affected by heat, absorbs oily stains, does not absorb moisture affected by heat, absorbs oily stains, does not absorb moisture affected by chlorine bleach poor abrasion resistance, do not use rust removers containing hydrofluoric acid heat sensitive, do not use rust removers containing hydrofluoric acid heat sensitive, do not use rust removers containing hydrofluoric acid Burning Odor Fiber Characteristics of Residue Appearance Problems in Care The results to be expected from burning various fibers: *aluminum is encased in a plastic coating of mylar