Bulletin Volume 107-109

Bulletin Volume 107-109

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ... in the oven. Transfer to a platinum crucible, first breaking up the dry precipitate and then adding the filter ash to the crucible, and complete the determination, as directed under " XXVII. Food Preservatives," page 180. XV. METHODS FOR THE ANALYSIS OF DISTILLED LIQDORS. 1. Specific Gravity.--Provisional. Determine at 15.6 C. as described on page 83, under " XIII. Wine." 2. Alcohol by Weight.--Official. Weigh into a distilling flask 20-25 grams of the sample, dilute with 100 cc of water, distil nearly 100 cc, and (elther weigh distillate or make to volume at 15.6 C, and determine the specific gravity. Obtain the percentage of alcohol by weight corresponding to the specific gravity from Table II (p. 203); multiply this figure by the weight of the distillate and divide by the weight of the sample taken to obtain the per cent by weight of alcohol. 3. Alcohol by Volume.--Official. From the specific gravity of the distillate obtained under "2" find the percentage of alcohol by volume from Table II (p. 203). Multiply this figure by the volume of distillate (calculated from the specific gravity) and divide by the volume of the sample, thus obtaining the percentage of alcohol by volume In the original sample. 4. Extract.--Official. Weigh or measure (at 15.6 C.) 100 cc of the sample, evaporate nearly to dryness on the water bath, then transfer to a water oven, and dry at the temperature of boiling water for two and one-half hours. 5. Ash.--Provisional. Proceed as directed under "VI. General Methods" (p. 38), employing the residue from the determination of the extract (4). 6. Acidity.--Provisional. Titrate 100 cc (or 50 cc diluted to 100 cc if the sample is dark in color) with tenth-normal alkali, using...show more

Product details

  • Paperback | 278 pages
  • 189 x 246 x 15mm | 499g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236818350
  • 9781236818355