THE ALUMNI JOURNAL 53 



CARBON TETRACHLORIDE 

 THE GREATEST OF SOLVENTS 



I iKSCRIPlK )X. — Carl)on Tetrachloride is a heav\-, colorless, 

 transparent liquid. Its odor is agreeable and aromatic. Its specific 

 gravity is 1.604 and one gallon weighs 13.3 lbs. It is absolutely 

 fire proof, iioii-iiiflaiiniiablc and iion-c.vplosk'c, and its vapor extin- 

 guishes flame. Its boiling point is yy" C. It is a chemical unit 

 or individual, and can be recovered again, unchanged, and with al- 

 ways the same properties, and does not separate into different frac- 

 tions, as do Naphtha and Benzine. It can be evaporated oft' com- 

 pletely, without residue. 



SOLUBILITY. — It is insoluble in water, alcohol of less than 75 

 per cent, by volume of absolute alcohol, and glycerine. It is freely 

 soluble in acetone, glacial acetic acid, oleic acid, ethyl and amyl alco- 

 hol, chloroform, carbon disulphide, benzole, benzine, ether, aniline oil, 

 spirits turpentine, petroleum and all petroleum oils, fixed and vola- 

 tile oils, and oleorius. 



USES. — Carbon Tetrachloride is one of the greatest of solvents, 

 and dissolves oils, fats, resins, wax, gutta percha, caresine, sperma- 

 cetti, paraffine, stearine, varnish, asphaltum, pitch, balsams, coal 

 tar, pine tar. ru])ber, salicylic acid, carbolic acid, iodine, bromine, 

 iodoform, bromoform, menthol, thymol, camphor, napthaline, sul- 

 phur chloride, soda and potash, soaps, ammonia, and numerous 

 other chemicals and jjroducts. It is not acted upon b}' either strong 

 acids or alkali. 



Carbon Tetrachloride as an extracting medium, has found wide 

 application in the exti action of fats and oils from oil seeds, oil cake, 

 animal tankage, wool, wool and cotton waste, and other oil and fat 

 bearing materials. They are extracted by Carbon Tetrachloride 

 with the highest degree of purity, absolutely free from residual 

 solvent and contaminating odor, taste, or "chemical smell," and 

 the extracted materials may be produced absolutely free from 

 solvent and with no odor or laste imparted to them. 



Oil Cake extracted with Carbon Tetrachloride is a feeding stuff 

 of excellent quality, l^etter than lu.iextracted Cake, in which the 

 high oil content is worthless and generally considered objection- 

 able, and is therefore very much better than Cake extracted with 

 other solvents, which, because of the residual solvent, usually is of 



