Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12 pdf
Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12 pdf
Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12 by Purdue University Station
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Author: Purdue University Station
Page Count: 56 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130987706
File size: 29 Mb
Download Link: Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12
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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. 1899 Excerpt: ... H. A. Huston. The increase in the use of formalin makes a ready means of determining the amount of actual formaldehyde in the solution very desirable. Allen's Commercial Organic Analysis, 3rd ed., p. 219, states on authority of W. A. Davis, that in solutions of fair purity, the amount of formaldehyde may be determined by the specific gravity. A table is given showing the percentage by weight and volume of formaldehyde present in solutions of various specific gravities. This table has been revised, as the earlier figures were not applicable to the purer solutions sold in the last two years. These figures relate to foreign samples and it was determined to see if they were applicable to goods found on the American market. For this purpose a number of samples of commercial formalin was purchased and the specific gravity and formaldehyde content determined. For the determination of formaldehyde a number of methods have been suggested. The oldest method is to treat the solution with an excess of ammonia of known strength, and after 24 hours to titrate the excess of ammonia with standard acid. Litmus is the most satisfactory indicator for this purpose. Another method is based on the fact that formadehyde combines with cyanide of potassium. This method was published by Dr. R. Romijn, in Zeit. fur Anal. Chcmie, 1897, p. 19. The abstract of it given in The Analyst, and as used in Allen, is incorrect and introduces a very large working error. When the original working directions are followed, the method is a very satisfactory one, both in rapidity and accuracy. The above two methods were used to determine the formaldehyde in the samples under consideration. Table XXXVIII shows the results which were obtained: Samples I and 4 were from goods shipped in large demijohns...
Read online Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12 Buy Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12 Download Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12 for pc, mac, kindle, readers Download to iPad/iPhone/iOS, B&N nook Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12
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Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12 by Purdue University Station
Author: Purdue University Station
Page Count: 56 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130987706
File size: 29 Mb
Download Link: Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12
---------------------------------------------------------------
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. 1899 Excerpt: ... H. A. Huston. The increase in the use of formalin makes a ready means of determining the amount of actual formaldehyde in the solution very desirable. Allen's Commercial Organic Analysis, 3rd ed., p. 219, states on authority of W. A. Davis, that in solutions of fair purity, the amount of formaldehyde may be determined by the specific gravity. A table is given showing the percentage by weight and volume of formaldehyde present in solutions of various specific gravities. This table has been revised, as the earlier figures were not applicable to the purer solutions sold in the last two years. These figures relate to foreign samples and it was determined to see if they were applicable to goods found on the American market. For this purpose a number of samples of commercial formalin was purchased and the specific gravity and formaldehyde content determined. For the determination of formaldehyde a number of methods have been suggested. The oldest method is to treat the solution with an excess of ammonia of known strength, and after 24 hours to titrate the excess of ammonia with standard acid. Litmus is the most satisfactory indicator for this purpose. Another method is based on the fact that formadehyde combines with cyanide of potassium. This method was published by Dr. R. Romijn, in Zeit. fur Anal. Chcmie, 1897, p. 19. The abstract of it given in The Analyst, and as used in Allen, is incorrect and introduces a very large working error. When the original working directions are followed, the method is a very satisfactory one, both in rapidity and accuracy. The above two methods were used to determine the formaldehyde in the samples under consideration. Table XXXVIII shows the results which were obtained: Samples I and 4 were from goods shipped in large demijohns...
Read online Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12 Buy Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12 Download Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12 for pc, mac, kindle, readers Download to iPad/iPhone/iOS, B&N nook Report of the Agricultural Experiment Station, Lafayette, Indiana Volume 11-12
Download book The Life and Services of Major General George H. Thomas - Scholar's Choice Edition
Download Homiletics, and Pastoral Theology
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Pflugers Archiv Fur Die Gesamte Physiologie Des Menschen Und Der Tiere Volume Bd. 176 (1919) download torrent
Download torrent Pelgrimspad / 1 Door het groene hart / druk 3 : Amsterdam - 's-Hertogenbosch 199 km
Download book Worcester Three Choirs Festival 1996: Festival Programme
Memoirs, Journal and Correspondence of Thomas Moore, Volume 6... download