Alcohol Testing Form .Part

These sections, 40.225 What form is used for an alcohol test , and 40.227 May employers use the ATF for non-DOT tests, or non-DOT forms for DOT tests , specify the form to be used for all DOT-required alcohol tests the three-part DOT Alcohol Testing Form (ATF). 

Isolation of Lecithin from Egg-yolk (section 217).— Grind the yolk of one hard-boiled egg with 50 cc. of ether. Filter and wash the solid residue twice with 10 cc. of ether. Evaporate off the ether on the steam-bath, or distil it off from a small flask. Extract the residue twice with hot alcohol, using 10 cc. each time. Pour off the alcohol from the heavy oil through a small filter. Evaporate off the alcohol, dissolve the residue in 10 cc. of cold ether, and add 10 cc. of acetone. Stir until the particles of the precipitated lecithin adhere together and form a ball. Place the latter on a filter-paper. Describe its properties. Boil about one-fourth of the lecithin with about 10 cc. of a 10 per cent solution of sodium hydroxide. Note the odor of the gas evolved. What is it Cool the solution. Is there any evidence of the formation of a soap Filter, dissolve the precipitate in warm water and add dilute hydrochloric acid to the solution. What is precipitated Test a part of the lecithin for nitrogen and for phosphorus ( 58, 59, 61, page 39). 

As thus obtained, the acid is combined with one equivalent of water, and is, therefore, expressed by the formula, C10 Hs 0 HO. Hydrated sebacic acid forms light, white, pearly Beales, resembling benzoic acid in appearance indeed, it was considered by Berzelius to be identical with this acid. It has a very slightly acid taste, but reddens litmus. It fuses at 260° to an oily liquid, and, at a higher temperature, sublimes unchanged. It is much more soluble in hot than in cold water, and is readily dissolved by alcohol or ether. With the alkalies it forms soluble achates, but its salts, with ether metallic oxides, are for the most part insoluble, Liebig and RedteNbacher were the first to notice tins acid as a certain and delicate test of the presence of oleic acid. 

Cinnamon.—The bark of the lawns cinnamomum, and that from Ceylon is the best. It is very thin, brownish-red, and has an agreeable aromatic flavor.. The oassia, winch it resembles closely, is thicker, rougher on the surface, and comes in larger rolls or quills. The first is often sophisticated with the latter, and sometimes even a part of its volatile oil is abstracted by infusion in alcohol. This latter fraud is detected by the feeble smell and teste of the cinnamon. The finely-groimd hark is used for pastilles, sachets, an tooth-powders. Its aroma may also be extracted in the form of tincture, by alcohol. By distillation, it yields an essentia] oil of powerful odor, which is largely used in combination with oil of cloves and other strong essences. (... 

If an excess of hydrogen peroxide be added to a solution containing a chromate, made slightly acid with sulphuric acid, and the mixture then shaken up with a few c.c. of ether, a blue ethereal layer is formed above the aqueous solution. The colour is due to the formation of perehromie acid (see p. 73), and the reaction aSords a usefiil test for identifying chromates in presence of sulphuric acid. If the ether used is free from alcohol, 1 part of potassium chromate in 40,000 parts of water can be detected. Another sensitive test for chromates and di-ehromates is to add a trace of a-naphthylamine to the solution and acidify with tartaric acid, when an intense blue colour results. ... 

Suspend a small test sample of benzopinacol in alcohol and heat to boiling on a steam bath, making sure that the amount of solvent is not sufficient to dissolve the solid. Add a drop of sodium hydroxide solution, heat for a minute or two, and observe the result. The solution contains equal parts of benzhydrol and benzophenone, formed by the following reaction ... 

The counterion for imiprimine hydrochloride, chloride, is identified as part of the active ingredient. To carry out the test, the sample powder is dissolved in alcohol, and 2 N nitric acid is added along with 3 drops of a silver nitrate test solution. A white precipitate of silver chloride is formed, which dissolves upon addition of ammonium hydroxide, confirming the presence of the chloride ion. As chloride identification is used for the testing of the drug substance, it is not required for the formulated product. 

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