Nitrocellulose bulk powder

BaU grain powder Nitrocellulose bulk powder Double base powders... 

Bulk powders are made in considerable variety, but they consist always of nitrocellulose fibers which are stuck together but are not completely colloided. Some contain little else but nitrocellulose others contain, in addition to potassium and barium nitrates, camphor, vaseline, paraffin, lampblack, starch, dextrine, potassium dichromate or other oxidizing or deterrent salts, and diphenylamine for stabilization, and are colored in a variety of brilliant hues by means of coal-tar dyes. In the United States bulk powders are manufactured by one or the other of two processes, either one of which, however, may be modified considerably the materials are incorporated under wooden wheels, grained, and partially gelatinized, or the grains arc formed in a still where a water suspension of ptdped nitrocellulose is stirred and heated with a second liquid, a solvent for nitrocellulose which is volatile and immiscible with water. 

In a typical example of the still process for the manufacture of bulk sporting powder, 500 pounds of pulped nitrocellulose (12.60% N) is placed in a vertical cast-iron still along with 700 gallons of water containing 2% of potassium nitrate and 6% of barium nitrate dissolved in it. The material is mixed thoroughly... 

Most dangerous group Black Powder and colloidal propellants, in bulk placed in boxes, and dilorate explosives, not cartridged. Dynamites with attached caps fuses, detonators, nonelectric electric and Nitrocelluloses wetted with at least 23% water. Aromatic nitrocompounds, packed in double containers the inner ones from leather, cardboard, heavy paper envelope, while the outer ones of wood or copper. The fulminates must be transported in vessels filled with water ... 

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