Burner, alcohol

Place 0 -5 g. of 3 4 5 triiodobenzoyl chloride in a small test-tube, add 0 -25 ml. of the alcohol - ether and heat the mixture gently over a micro burner until the evolution of hydrogen chloride ceases (3-5 minutes). Pour the molten mass into 10 ml. of 20 per cent, alcohol to which crushed ice has been added. Some derivatives solidify instantly those which separate as oils change to solids in a few minutes without further manipulation. Recrystallise from rectified spirit (use 50 per cent, alcohol for esters of methyl and butyl carbitol ). 

Prepare a coil of copper wire by winding several turns around a glass tube. Heat the coil in the oxidising flame of a Bunsen burner for 1-2 minutes and plunge the spiral, whilst still red hot, into a test-tube containing a solution of 1 ml. of methyl alcohol and 5 ml. of water. Stopper the test-tube loosely, cool, remove the wire, and repeat the process two or three times. Observe the odour of the solution and use it (or formalin diluted with water) to carry out the following tests. 

The contents of the flask while still hot are poured into a 30-cm. evaporating dish and the alcohol is evaporated on a steam bath. The dry salt is pulverized and thoroughly mixed with 390 g. of calcium oxide, placed in a 2-I. copper retort (Note 3), and heated with the full flame of a Meker burner. The distillate is placed in a distilling flask and heated on a steam bath all material distilling under 90 is removed and discarded. The residue is then allowed to stand over solid potassium hydroxide for twelve hours and is finally fractionated. The dimethyl-pyridine distils at i42-i44°/743 mm. The yield is 35-36 g. or 62-64 per cent of the theoretical amount based on the 3,5-dicarb-ethoxy-2,6-dimethylpyridine, or 30-36 per cent based on the original ethyl acetoacetate. 

Spiritus, m. spirit, spirits, specif, alcohol, spiritusartig, a. spirituous, alcoholic. Splritus-beize, /. spirit mordant spirit stain, -blau, n. spirit blue, -brenner, m. (spirit) distiller alcohol burner, -brennerei, /. distillery, -dampf, m. alcohol vapor, -fa-bfik, /. spirit manufactory, distillery, -fass, n. spirit cask or barrel, -geruch, m. odor of spirits. -Industrie, /. spirit industry, distilling industry, -lack, m. spirit varnish, -lampe, /. spirit lamp, spiritusldslich, a. spirit-soluble. 

Takahama, U. Oniki, T. Enhancement of peroxidase-dependent oxidation of sinapyl alcohol hy esters of 4-coumaric and ferulic acid. In Plant Peroxidases, Biochemistry and Physiology Ohinger, C. Burner, U. Ebermann, R. Penel, C. Greppin, H., Eds. Universite de Geneve, Geneve Switzerland, 1996 pp. 118-123. 

The appatatus consists of a brass cup (See Fig F10), supported by a metal heating plate, XA inch thick and 6 inches in diameter (not shown here). In the center of the plate there is a plane depression l/32 inch in depth, and of just sufficient diameter to fit the cup. There is also a circular opening 2-3/16 inches in diam, cut thru the plate, centering with the center of die above-mentioned depression. The plate is covered with a sheet of hard asbestos board % inch thick, and of die same shape as the metal plate and with a hole cut in the center just to fit the cup. Heat may be supplied from any convenient source. The use of gas burner, electric heater, or alcohol lamp Is permitted, but under no circumstances are... 

You can light an alcohol burner with alehohol in the same way. Never repeat the experiment using the same rod ... 

Source of Ileal. In the regular laboratory, special gas burners are used. In the home lab, you can use a burner for denatured alcohol. Have a shallow metal pan under the burner for fire safety. 

MAKE AN ALCOHOL BURNER FROM INK BOTTLE, THERMOS BOTTLE CORK, AND LIPSTICK CONTAINER. BUY WICK AT A HARDWARE STORE. 

Be careful with fire. When you use your alcohol burner, have a metal pan under it for safety. 

ATTACH TUFT OF STEEL WOOL TO WIRE. HEAT TO RED HEAT OVER ALCOHOL BURNER. LOWER INTO JAR OF OXYGEN. IRON BURSTS INTO FLAME. 

PLACE CUSTARD CUP OVER ALCOHOL BURNER. ADD 10 g MORE SALTPETER. SOON ALL SALTPETER IS DISSOLVED. AT HIGHER TEMPERATURES IT TAKES MORE SOLUTE TO MAKE A SATURATED SOLUTION. (AT BOILING, 20 ml H,0 DISSOLVES 49 g SALTPETER.)... 

ACETYLENE. [CAS 74-86-2]. CH CH formula weight 26.04, mp — 81.5°C, bp —84 0, sp gr 0.905 (air = 1.000). Sometimes referred to as ethyne, ethine, or gaseous carbon (92.3% of the compound is C), acetylene is moderately soluble in H2O or alcohol, and exceptionally soluble in acetone (300 volumes of acetylene m 1 volume of acetone at 12 atmospheres pressure) The gas burns when ignited in air with a luminous sooty flame, requiring a specially devised burner for illumination purposes. An explosive mixture is formed with air over a wide range (about 3 to 80% acetylene), but safe handling is improved when the gas is dissolved in acetone, The heating value is 1455 Btu/ft--1 (8.9 Cal/nr). 

Second Method. 60 gms. of potassium cyanide are heated in a large iron crucible over a large burner or blowpipe flame until it begins to fuse. 140 gms. of red lead, in small portions at a time, are added while the mixture is stirred with a rod. When the addition is complete and frothing has ceased the fused mass is poured on to an iron tray. When cold, the mass is separated from metallic lead, ground in a mortar, and digested with 200 c.cs. of cold water for an hour. The filtrate from this mixture is treated with 25 gms. of ammonium sulphate and evaporated in a basin to dryness on a water bath. The residue, ground finely and transferred to a flask, is boiled with three instalments of alcohol under reflux to dissolve the urea from the potassium sulphate. Each extract... 

For each student group 14.65 g NaC2H302 (sodium acetate) three large test tubes test tube holder Bunsen burner or alcohol lamp matches Celsius thermometer distilled water red or blue powdered paint pigment stirring rod test tube rack 10.0 ml graduated cylinder centigram balance paintbrushes 5-x-7-in. watercolor paper. 

Prepare a supersaturated solution of sodium acetate. In a large test tube, add 7.0 g NaC2H302 to 10.0 ml distilled water and gradually heat the contents of the test tube over a Bunsen burner or alcohol lamp until all the sodium acetate is dissolved. Carefully place the test tube in a test tube rack and let it cool without being disturbed. All the sodium acetate will remain in solution. 

Using a Bunsen burner or alcohol lamp, warm 100 ml of distilled water. Do not boil. 

Instead of a steam bath or a water bath, an electrically heated oil bath is suitable. This permits easy regulation of the rate of distillation. However, the temperature of the bath should not exceed 95-100° when isopropyl alcohol is the solvent if possible dehydration of a sensitive alcohol is to be avoided. For this same reason, a burner, hot plate, or sand bath is not recommended for heating. Especially at the end of the reduction, superheating of the concentrated alkoxide solution may bring about dehydration or other decomposition of the product. 

The experiment was later adapted to compare the heat released by burning four different alcohols. Each burner in turn was weighed and then the alcohol was allowed to bum until the temperature of the water had risen by 15 C. The flame was then extinguished and the burner reweighed. The following results were obtained. 

Preparation of Glass Hollow Fibre for Flow Moderation. A 0.5 cm mid-section of a blood collecting glass capillary (4 cm long I.D. 0.25 mm) was heated over a small alcohol burner. 

Figure 031. This apparatus can be replaced with any standard distillation apparatus, or standard fractional distillation apparatus Alcohol stills can also be used, but may undergo corrosion in the distillation pot due to the presence of sulfuric acid. The diethyl ether should be re-distilled using a standard fractional distillation apparatus, or equivalent. After redistillation, the ether should be stored in a proper container such as a metal can, or glass container, sealed air-tight, and filled to the top (to minimize air gaps), and these containers should be stored in a refrigerator until use. Note the heating mantle portrayed in the illustration can be replaced by a Bunsen burner, hot plate, stovetop, steam bath, or oil bath if desired.

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