978 



SUBJECT INDEX 



Underanoic anhydride, melting point, 135 

 y(-Undecanol (see Undecyl alcohol) 

 Fndecenoio acid, oxidation, 158 

 10-Undecenoic anhydride, melting point, 



135 

 lO-Undecenol, constants, 310 

 10-Un(. ecenoyl chloride, boiling point, 146 

 Undecyl alcohol, constants, 307 

 Undecylamide, melting point, 138 

 Fnsaponifiable fraction (matter), 247, 248 



l)atyl alcohol and, 392, 393 



chimyl alcohol and, 392, 393 



selachyl alcohol and, 392, 393 

 (Unsaturated acids, in animal fats, 184- 

 195 



proportion in lecithin, 425, 426 



separation from satuiated, 69, 70, 179, 

 180 

 rnsymmetrical diglyceride (see 1,2-Di- 



glycerides) 

 Unsymmetrical mixed triglycerides, defi- 

 nition, 167, 172 



melting points, 259-262 



polymorphism , 259-262 



solubility, 269, 270 



synthesis, 173 

 Unsymmetrical monoglyceride (see 1- 



M onoglycerides) 

 Urethan, 319 

 a-Ursolic acid, as triterpene, 385 



in a-amyrin group, 391 



in apple cuticle wax, 381 



in Bing cherry wax, 382 



in cranberry wax, 382 



in pear cuticle wax, 381 

 U.S.P. Reference cod-liver oil, 782 

 Uterus, tocopherols in, 799, 802 



Vaccenic acid, discovery, 14 



occurrence, 16 



physical constants, 46 

 Valeraldehyde, constants, 128 

 Valeramide, melting point, 138 

 Valeric acid, melting point, 50 



molecular volume, 102 



specific gravity, 100 



viscosity, 107 

 Valeric anhydride, boiling point, 135 



density, 136 



melting point, 135 



Valeronitrile, density, 142 



melting point, 141 

 Valeryl chloride, constants, 146 

 Vanguerigenin, as probable triterpone. 



387 

 Vapor pressure of »-alkyl acids, 51 

 Vegetable fats, containing elaeostearic, 

 petroselinic, or erucic acids, 196, 202, 

 203 



containing large proportion of satu- 

 rated short-chain acids, 201, 205 



containing saturated acids with mort^ 

 than 18 C, 204, 208 



high in linoleic acid, 196-200 



glycerides in, 231-234 



rich in stearic acid, 204, 206 

 Venom, toad, ergosterol in, 356 

 Vigantol, toxicity, 769 

 Violaxanthin, 566, 567 



absorption spectra, 611 



adsorption order, 660 



occurrence, 557, 567 



properties, 605 



solubility, 619 



structure, 566, 567 

 Viosterol (see Calciferol, Vitamin Do) 

 Virginia creeper, carotenes in, 518 

 Virginia peanut oil, composition, 208 

 Viscosity of fatty acids, 107-109 

 Vitamin A (Ai), 667-738 



absorption maximum, 730 



absorption spectra, 728-732 



biological potency, 667, 695 



carotene and, 508, 509 



comparison with neovitamin A, 698 



content, factors affecting, 675 



conversion to neovitamin A, 697 



crystalline, 670-673 



determination of free vs. ester, 688 



distillation, 727, 728 



distribution, 678-680 



elimination maximum, 730 



extinction coefficient, 670, 674, 730 



from carotene, 724 



historical, 508, 667-675 



kitol and, 711, 712 



melting point, 674, 698, 726, 730 



methods for, by Awapara, 731 



by establishing normal curve, 729, 



730 

 by Morton and Stubbs, 731 



