Alcohol asbestos

Muscat JE, Wynder EL. 1992. Tobacco, alcohol, asbestos, and occupational risk factors for laryngeal cancer. Cancer 69 2244-2251. 

A modified Hahn condenser, a form of partial condenser, is illustrated in Fig. VI, 12, 1 it is best constructed of Pyrex glass. The dimensions given are only approximate and may be varied slightly. The inside clearance should be approximately 0-3 cm. a water jacket should be fitted over the central portion of the side arm by moans of rubber stoppers. Alternatively, the side arm may have a length of about 10 cm. and a condenser fitted to this in the usual manner. An approximately 1 cm. layer of absolute alcohol is placed in the inner condensing tube and the top of the tube is connected to a reflux condenser. The outside of the condenser below the side arm should be insulated with asbestos cloth or paper. The refluxing mixture boils the ethyl alcohol in the inner tube, most of the isopropyl alcohol is returned to the flask and the acetone distils over. 

The following alternative procedure is recommended and it possesses the advantage that the same tube may be used for many sodium fusions. Support a Pyrex test tube (150 X 12 mm.) vertically in a clamp lined with asbestos cloth or with sheet cork. Place a cube (ca. 4 mm. side = 0 04 g.) of freshly cut sodium in the tube and heat the latter imtil the sodium vapour rises 4 5 cm. in the test-tube. Drop a small amount (about 0-05 g.) of the substance, preferably portionwise, directly into the sodium vapour CAUTION there may be a slight explosion) then heat the tube to redness for about 1 minute. Allow the test tube to cool, add 3-4 ml. of methyl alcohol to decompose any unreacted sodium, then halffill the tube with distilled water and boil gently for a few minutes. Filter and use the clear, colourless filtrate for the various tests detailed below. Keep the test-tube for sodium fusions it will usually become discoloured and should be cleaned from time to time with a little scouring powder. 

ALCOHOLS,HIGHERALIPHATIC-SURVEY AND NATURALALCOHOLSMANUFACTURE] (Vol 4) -in asbestos minerals [ASBESTOS] (Vol 3)... 

Failure to consider listed chemical qualifier. Aluminum, vanadium and zinc are qualified as fume or dust." Isopropyl alcohol and saccharin have manufacturing qualifiers. Ammonium nitrate and ammonium sulfate are qualified as solutions. Phosphorus is qualified as yellow or white. Asbestos is qualified as friable. Only chemicals meeting the qualifiers require reporting under section 313 and should be reported on Form R with the appropriate qualifier in parenthesis. 

Holz, n. wood timber forest thicket, -abfall, m., -abfdlle, rn.pl. wood waste, holzahnlich, a. wood-like, ligneous. Holz-alkohol, m. wood alcohol, -amiant, m ligneous asbestos, -apfel, m. crab apple, -apfelwein, m. crab cider, -art, /. kind or species of wood. 

Roh-alkohol, m. crude (or raw) alcohoL -analyse, /. rough or approximate analysis, -antimon, n. crude antimony, -arbeit, /, (Metal.) ore smelting, -asbest, m. crude asbestos. -aufbereitung, /. preliminary preparation, -benzol, n. crude benzene, benzol (or benzole), -blei, n. crude lead, -blende, /. (Mining) crude blende, -block,... 

Lithium dispersion can be safely destroyed by carefully adding it in small portions to a large excess of technical tert-butyl alcohol in a metal pan. If too much lithium is added at one time, the reaction with the ferf-butyl alcohol can become very vigorous. Under these circumstances, a fire can be avoided by covering the pan with a second, larger metal pan or with an asbestos sheet. 

At this point 20-30 g. of short glass fiber or asbestos is added and the yeast is filtered out by suction. The filtrate is concentrated to a thick syrup under diminished pressure on a water bath, care being taken to keep the temperature below 40° (Note 3). The residue (about 200 cc.) is taken up in a mixture of 400 cc. of absolute alcohol and 100 cc. of dry ether (Note 4). The precipitate formed is removed by centrifuging, the supernatant liquid is decanted, and the residue is extracted with a mixture of 200 cc. of 98.5 per cent alcohol and 100 cc. of dry... 

The platinum asbestos is removed by filtration and the product which has deposited on this catalyst is dissolved in water. Alcohol is added to the combined filtered solution and washings, and the mixture is cooled with ice to precipitate the product. A second crop of crystals may be obtained by concentrating the solution under vacuum at room temperature, then cooling and adding hydrochloric acid until the pH is below 1. The crystals are thoroughly washed with ethanol. 

Some enviromnental agents are carcinogenic tobacco, coal tar, asbestos, alcohol, some polycyclic aromatic hydrocarbons. X-rays and other sources of radiation, and many natural products. 

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