Nitrocellulose: Nitrocellulose is white or yellowish cotton, soluble in acetone. The scientific name cellulose nitrate, formerly known as nitrocellulose, nitrocellulose. NC is a polymer. Its molecular weight is large. Its molecular formula is C6H7O2(ONO2)a(OH)3-an, where a is the degree of esterification and n is the degree of polymerization. It is customary to use a percentage of nitrogen to represent the degree of esterification. Nitrocellulose is highly flammable and explosive. The degree of danger depends on the degree of nitrification. Nitrocellulose with a nitrogen content above 12.5% ​​is extremely dangerous and burns in case of fire. When the temperature exceeds 40 ° C, it can accelerate its decomposition and spontaneous combustion. Although the nitrocellulose with a nitrogen content of less than 12.5% ​​is relatively stable, it is gradually decomposed and releases acid when heated or stored for a long time, reducing the ignition point, and there is also the possibility of spontaneous combustion.
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