The relation between natural and synthetial glycerylphosphoric acids / by Frederick B. Power and Frank Tutin.

  • Power, Frederick B. (Frederick Belding), 1853-1927
Date:
[1905]
Catalogue details

Licence: In copyright

Credit: The relation between natural and synthetial glycerylphosphoric acids / by Frederick B. Power and Frank Tutin. Source: Wellcome Collection.

    7/14 (page 253)
    owing to the difficulty of completely burning away the carbon, only the hydrogen w*as estimated. 0*3651, dried at 125°, gave O’1129 II.20. H = 343. 0-3907, „ „ „ 01191 H20. H = 338. C3H7O0PCa requires H = 3 33 per cent. /OC3H5(OH)2 Strontium Glycerylphosphate, 0 = P^~0\>^i This salt, like that of calcium, is more sparingly soluble in hot than in cbld w*ater. On heating a cold, saturated solution of it on a water-bath, it separated as a white, granular powder. 04957, previously dried in a vacuum, lost, on heating at 125°, 0-0074 or 1*49 per cent. Half a molecule of water would require a loss of 3'37 per cent. 04883, dried at 125°, gave 0-3451 SrS04. Sr = 33-7. C3H70(5PSr requires Sr = 34-0 per cent. Barium Glycerylphosphate, 0 = P~0\_ MX 0-C3H,(OH), a This is similar in its properties to the strontium salt. 0-4550, previously dried in a vacuum, lost, on heating at 125°, 0 0041 or 0-90 per cent. Half a molecule of water would require a loss of 2'84 per cent. 0*4401, dried at 125°, gave 0-3301 BaS04. Ba = 444. C3H706PBa requires Ba = 44'7 per cent. The following salts were all prepared from a solution of the pure barium salt by exact precipitation with a solution of the sulphate of the respective metal, filtering, and concentrating the filtrate. /0-C3Hs(0H)2 Lithium Glycerylphosphate, O = P:—OLi X)Li This salt is very readily soluble in cold, but only moderately so in hot water. On warming its cold, saturated solution, it is deposited in tufts of small leaflets. 0*2934 of the air-dried salt, heated at 125°, lost 0-0204 or 6*9 percent. This represents between one-half and one molecule of water, which would require respectively a loss of 4-6 and 8*9 per cent.