Commercial Organic Analysis Volume 2 download
Commercial Organic Analysis Volume 2 download
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Author: Alfred Henry Allen
Number of Pages: 170 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130529326
File size: 40 Mb
File Name: Commercial.Organic.Analysis.Volume.2.pdf
Download Link: Commercial Organic Analysis Volume 2
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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. 1910 Excerpt: ...quite clear and transparent, or at any rate sufficiently translucent to allow of large printed matter being read through it, as described by Weinwurm. Should, however, on the contrary, as much as 5% of foreign hydrocarbons be present, the fluid will be quite opaque. With an admixture of only 3% of ceresin or paraffin, the indication is uncertain, and the further treatment recommended by Weinwurm to meet such cases should be followed. Lewkowitsch3 states that he can recommend Weinwurm's test for pure beeswax, but that turbidity of the solution does not necessarily 'Analyst, 1897, 22, 242. Ibid, 1897, 22, 292. 8 Oils, Fats and Waxes, II, 772. Vol. II.--17 prove the presence of ceresin or paraffin wax, since it is also produced by carnaiiba wax and insect wax. Paraffin, ceresin, and ozokerite are the only adulterants of beeswax which tend to reduce in a notable degree the saponification value. They also reduce the sp. gr. in a marked manner, but this indication has little more than a qualitative value. In a sample consisting solely of beeswax and hydrocarbon wax the proportion of the former may be deduced with considerable accuracy from the results of the saponification, each 0.1% of potassium hydroxide required representing 1.053% of beeswax in the sample. Estimation of Fatty Alcohols and of Paraffin and Ceresin.--An adulteration of beeswax with less than 6% of ceresin or paraffin cannot be detected with certainty by any of the ordinary methods, because the relations between the free fatty acid and saponifiable and unsaponifiable matters in genuine beeswax vary within somewhat wide limits. Werder1 has proposed to saponify 2 grm of the sample of wax with alcoholic potassium hydroxide, dry on sand, extract the dry mixture of soap, sand, etc., with pure dry ethe...
Read online Commercial Organic Analysis Volume 2 Buy Commercial Organic Analysis Volume 2 Download and read Commercial Organic Analysis Volume 2 ebook, pdf, djvu, epub, mobi, fb2, zip, rar, torrent Download to iPad/iPhone/iOS, B&N nook Commercial Organic Analysis Volume 2
Commercial Organic Analysis Volume 2. Alfred Henry Allen
Author: Alfred Henry Allen
Number of Pages: 170 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130529326
File size: 40 Mb
File Name: Commercial.Organic.Analysis.Volume.2.pdf
Download Link: Commercial Organic Analysis Volume 2
---------------------------------------------------------------
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. 1910 Excerpt: ...quite clear and transparent, or at any rate sufficiently translucent to allow of large printed matter being read through it, as described by Weinwurm. Should, however, on the contrary, as much as 5% of foreign hydrocarbons be present, the fluid will be quite opaque. With an admixture of only 3% of ceresin or paraffin, the indication is uncertain, and the further treatment recommended by Weinwurm to meet such cases should be followed. Lewkowitsch3 states that he can recommend Weinwurm's test for pure beeswax, but that turbidity of the solution does not necessarily 'Analyst, 1897, 22, 242. Ibid, 1897, 22, 292. 8 Oils, Fats and Waxes, II, 772. Vol. II.--17 prove the presence of ceresin or paraffin wax, since it is also produced by carnaiiba wax and insect wax. Paraffin, ceresin, and ozokerite are the only adulterants of beeswax which tend to reduce in a notable degree the saponification value. They also reduce the sp. gr. in a marked manner, but this indication has little more than a qualitative value. In a sample consisting solely of beeswax and hydrocarbon wax the proportion of the former may be deduced with considerable accuracy from the results of the saponification, each 0.1% of potassium hydroxide required representing 1.053% of beeswax in the sample. Estimation of Fatty Alcohols and of Paraffin and Ceresin.--An adulteration of beeswax with less than 6% of ceresin or paraffin cannot be detected with certainty by any of the ordinary methods, because the relations between the free fatty acid and saponifiable and unsaponifiable matters in genuine beeswax vary within somewhat wide limits. Werder1 has proposed to saponify 2 grm of the sample of wax with alcoholic potassium hydroxide, dry on sand, extract the dry mixture of soap, sand, etc., with pure dry ethe...
Read online Commercial Organic Analysis Volume 2 Buy Commercial Organic Analysis Volume 2 Download and read Commercial Organic Analysis Volume 2 ebook, pdf, djvu, epub, mobi, fb2, zip, rar, torrent Download to iPad/iPhone/iOS, B&N nook Commercial Organic Analysis Volume 2