A Century of the United States Pharmacopoeia 1820 1920 I the Galenical Oleore
A Century of the United States Pharmacopoeia 1820 1920 I the Galenical Oleore
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In our eReader you can find the full English version of the book. Read A Century of the United States Pharmacopoeia 1820 1920 I the Galenical Oleore Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Century of the United States Pharmacopoeia 1820 1920 I the Galenical Oleore
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60 power for percolation. Owing to the large fatty oil content, this degree of fineness is difficult to attain, and, as experiments conducted in the laboratory indicate that a No. 40 powder is equally satisfactory for this purpose, it appears that a change to this effect in the pharmacopooeial directions is desirable.
3) Ether is the solvent directed by the Pharmacopoeia to be used for the extraction of the substances constituting the oleo- resin. Observations made in the laboratory indicate th...at other solvents may also be employed for this purpose without in any way detracting from the value of the finished product. Thus, acetone and petroleum ether were found to yield pro- ducts almost identical with that obtained by the use of ether. The latter is to be preferred to benzin as suggested by Bering- er (1892) since its composition is more constant. Alcohol which is used commercially in the preparation of some of the so-called liquid apiols dissolves a considerable amount of col- oring matter and other inert substances and, therefore, yields a product of inferior quality.
What to read after A Century of the United States Pharmacopoeia 1820 1920 I the Galenical Oleore?
You can find similar books in the "Read Also" column, or choose other free books by Andrew G Andrew Grover Du Mez to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
60 power for percolation. Owing to the large fatty oil content, this degree of fineness is difficult to attain, and, as experiments conducted in the laboratory indicate that a No. 40 powder is equally satisfactory for this purpose, it appears that a change to this effect in the pharmacopooeial directions is desirable.
3) Ether is the solvent directed by the Pharmacopoeia to be used for the extraction of the substances constituting the oleo- resin. Observations made in the laboratory indicate th...at other solvents may also be employed for this purpose without in any way detracting from the value of the finished product. Thus, acetone and petroleum ether were found to yield pro- ducts almost identical with that obtained by the use of ether. The latter is to be preferred to benzin as suggested by Bering- er (1892) since its composition is more constant. Alcohol which is used commercially in the preparation of some of the so-called liquid apiols dissolves a considerable amount of col- oring matter and other inert substances and, therefore, yields a product of inferior quality.
What to read after A Century of the United States Pharmacopoeia 1820 1920 I the Galenical Oleore?
You can find similar books in the "Read Also" column, or choose other free books by Andrew G Andrew Grover Du Mez to read onlineMoreLess
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