Volume 1

Chemical technology and analysis of oils, fats, and waxes / by J. Lewkowitsch.

  • Julius Lewkowitsch
Date:
1904
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: Chemical technology and analysis of oils, fats, and waxes / by J. Lewkowitsch. Source: Wellcome Collection.

    448/454 page 426
    CHEMICAL ANALYSIS OF OILS, FATS, AND WAXES glycerides of normal melting points are obtained. Triglycerides of acids having fourteen carbon atoms seem, however, to form the limit, as experi- ments made with a view to obtaining tripalmitin from Japan wax did not lead to satisfactory results, owing to decomposition taking place. Page 11 Trilaurin has been obtained by fractional distillation of laurel oil in vacuo, and trimyristin in the same manner from nutmeg butter. Trilaurin boils in vacuo at 260°-275° C. (Krafft]). Trimyristin boils in vacuo from 290°-300° C. (Krafftl). Page 85 Lithium laurate,- Li C12H2302, crystallises from alcohol in white shining scales. 100 c.c. of water dissolve at 18° C. 0T58 gram, and at 25° C. 0T76 gram of the salt. 100 c.c. of alcohol of the specific gravity 0-797 dissolve at 18° C. 0-418 gram, and at 25° C. 0-4424 gram of the salt. The ethyl-ester boils in vacuo at 79° or 101° C., according as the liquid lias to rise 25 mm. or 65 mm.3 Page 91 Lithium myristate,2 Li C14H27(J.), crystallises from alcohol in the form of small white scales. 100 c.c. of water dissolve at 18° C. 0-0235 gram, and at 25° C. 0-0234 gram of the salt. 100 c.c. of alcohol of the specific gravity 0-797 dissolve at 18° C. 0-184 gram, and at 25° C. 0-22 gram of the salt. The ethyl-ester boils at 295° under ordinary pressure, and in vacuo at 102° or 124° 0., according as the liquid has to rise 25 mm. or 65 mm. It is sparingly soluble in alcohol and ether, and more readily soluble in petroleum ether.3 Page 93 Lithium palmitate,2 Li C1(.H3102, crystallises from hot alcohol in small white shining scales. 100 c.c. of water dissolve at 18° C. 0-011 gram, and at 25° C. 0-018 gram of the salt. 100 c.c. of alcohol of the specific gravity 0-797 dissolve at 18° C. 0-0796 gram, and at 25° C. 0-0955 gram of the salt. The ethyl-ester boils in vacuo at 122° or 138°, according as the liquid has to rise 25 mm. or 65 mm.3 Page 95 Lithium stearate,2 Li ClgH.!502, crystallises from alcohol in small white scales. 100 c.c. of water dissolve at 18° C. 0-01 gram, and at 25° C. 0-012 1 Berichte, 1903, 4343, 2 Partheil and Ferie, Archiv. d. Pliann. 1903, 545. 3 Krafft, Berichte, 1903. 4340.
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