Gunpowder and High Explosives

Gunpowder and High Explosives

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1893 edition. Excerpt: ...water is made to circulate during the mixing. ttThis step is attended with the evolution of considerable heat, which, unless regulated, is liable to "fire" the charge. It is therefore necessary to watch a thermometer (the bulb of which is immersed in the mixtnre) carefully, and should the temperature rise above 80 P., the introduction of the glycerine is stopped. UThe presence of acid in a solution is shown by the color of blue litmus paper being changed to red when dipped in it. If a solution is alkaline, the oolor of red litmus paper is changed to blue. 13579-4 6. The nitroglycerine is transferred from the washing apparatus, through coarse musl1n filters, to the storage tanks, where it is kept generally under water. The French method of making nitroglycerine differs in principle from that just described. In this process two mixtures are made, one of equal parts of nitric and sulphuric acids, the other a mixture of one part of glycerine and about three parts of sulphuric acid. Both mixtures are allowed to cool, and are then mixed in the proportions of about parts of the first to about 4 parts of the second, and the conversion allowed to proceed by itself. About 12 hours are required for the complete conversion of 300 pounds of glycerine by this process. Properties of nitroglycerine.--Freshly made by the Mowbray process, nitroglycerine is a creamy white, opaque, oily liquid, but upon standing for a time, the length of which depends upon the temperature, it "clears " or becomes transparent and colorless, or nearly so. As found in commerce, it has a yellow or brownish yellow color. Although very slightly soluble in it, it does not mix with and is unaffected by cold water. It has a sweet, pungent, aromatic taste, and is an more

Product details

  • Paperback | 26 pages
  • 189 x 246 x 1mm | 68g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236540638
  • 9781236540638