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

  • Julius Lewkowitsch
Date:
1914
Catalogue details

Licence: In copyright

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

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

    151/980 (page 131)
    of the seeds for production of seedlings is very feeble. The high prices of linseed oil ruling recently stimulated the collection of seeds, and large parcels were sent to this country. The cost of collecting has been estimated, in an Official Report of the Director of Agriculture for the Federal Malay States,^ to amount to Is. Id. for 1000 seeds; the cost of collecting and shelling 1 ton of kernels (414,400 seeds) would amount to nearly £3. It is further estimated that one ton of kernels could be delivered in this country at a cost of about £6 : 10s. In view of the presence of a cyanogenetic glucoside the cakes would most likely be unsuitable for feeding cattle, and hence would have to be used as manure. MELIA AZEDARACH OIL ^ French—Huile de Melia Azedarach. German—Meliaol. Italian—Olio di Melia. This oil is obtained from the seeds of Melia Azedarach, L. (Persian lilac ; Bead tree ; Laurier grec ; LiJas des Indes ; Sykomore which contain 39-36 per cent of oU. The total amount of oil obtainable from the fruits is 4-62 per cent. This oil must not be confounded with Margosa oil, from Melia AzadiracMa, L. (see Vegetable Fats ). Specific Gravity at 15° C. Solidifying Point. ° C. Melting Point. ° C. Saponilica- tion Value. Iodine Value. Reichert- Meissl Value. Refractive Index. Butyro-re- fractonieter. Degrees. 0-92.35 -12° -3 191-5 135-6 0-77 At 40° C. 65-1 Solidifying point of the fatty acids . . .19° C. Melting point of the fatty acids . . .22° C. CROTON ELLIOTIANUS OIL ^ The seeds of Croton Elliolianus furnished an oil having the following characteristics :— Specific gravity at 15° C 0-9266 Saponification value ..... 201-5 Iodine value . . . . . . 138-5 Insoluble acids-]-unsaponifiable . . .94 per cent Titer Test 13-7° - 13-8° C, The specimen had the acid value . . . 4-24 The above numbers show that this oil differs considerably from the ordinary croton oil, which is derived from Groton Tiglium, L. * Bull. Imp. In.lL, 1911, 36. ^ Watt, Dictionary, v. p. 223. 2 Fendler, Apothchir Zeit., 1904, 55. ■* Dull. Imp. Inst.., 1907, 237.