What Every Fire Fighter Should Know

Issue 16 and Volume 69.

What Every Fire Fighter Should Know Compiled and Arranged by CHEMISTRY—ITS RELATION TO THE FIRE SERVICE (Continued from page 691) Fireproofing Combustibles of vegetable origin are much more prone to ignition than those of animal origin, since they all contain cellulose in one form or another. Chemically speaking cotton, linen and flax are almost identical with wood, all being made up largely of cellulose. Frequently it is desirable to render such substances fireproof where woven into fabrics. It is not practicable to make them thoroughly fireproof for a continued exposure to intense heat unless the materials consist of asbestos, but by treating them with solutions of certain salts as, for instance, alum, ammonium, sulphate or phosphate, borax, water glass (being a soluble silicate of sodium), calcium chloride or sodium tungstate, and allowing those salts to crystallize in the pores of the fabrics, temporary fireproofing may be accomplished. The effect is…

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