ACID 



28 



ACID 



It is a pale yellow oily liquid, without odor but having 

 a sour taste, soluble in water and alcohol, and is used 

 in treatment of neurasthenia, tabes, etc. Dose, o. i- 

 0.3 gm. (1^-5 gr.) three times daily. A., Glycerin- 

 sulfuric, C 3 H 8 S0 6 , a monobasic body forming a series 

 of salts called glycerosulfates. Syn., A., Sulfoglyceric . 

 A., Glycerolphosphoric, A., Glycerophosphoric. 

 See A., Glycerinphosphoric. A., Glycerolsulfuric, 

 A., Glycerosulfuric. See A., Glycerinsulfuric. A., 

 Glyceryltricarbonic. See A., Tricarballylic. 

 A., Glycoluramic. See A., Glycoluric (Illus. Diet.). 

 A., Glycosuric, an acid first found by Marshall in 

 alcaptonuric urine and again recently. It is now be- 

 lieved to be identical with homogentisinic acid. A., 

 Glycyrrhizic, an amorphous, brown-yellow, resinous 

 substance with a sweet taste, obtained from the root of 

 Glycyrrhiza glabra, L., and G. echinata, L. ; it is a tri- 

 basic acid and the active constituent of licorice ; it 

 swells in cold water without dissolving, but in hot 

 water forms a clear yellow jelly, readily soluble in weak 

 alcohol but scarcely soluble in absolute alcohol and in 

 ether. A., Glyoxal. See A., Glyoxylic (Illus. Diet.). 

 A., Glyoxalic. See A., Glyoxylic (Illus. Diet.). A.- 

 green. See Pigments, Table of A., Guaiacic, 1. 

 C 6 H 8 3 , obtained by Righini (1837) from guaiacum 

 wood or resin ; it crystallizes in colorless needles, sol- 

 uble in alcohol and ether. 2. See A., Guaiaresinic. 

 A., Guaiacolcarbonic, A., Guaiacolcarboxylic, 

 C 8 H 8 4 , a monobasic crystalline acid, melting at 150 

 C. *It is antiseptic and antipyretic. A., Guaiaconic, 

 C 19 H 20 O 5 (Hadelich, 1862), a constituent of guaiac 

 resin in the proportion of 70^, occurring as a light 

 brown amorphous substance fusing at ioo° C. ; readily 

 soluble in alcohol, ether, and chloroform, insoluble in 

 water. Its solutions are levorotary. A., Guaiac - 

 resin. See A., Guaiaresinic. A., Guaiaresinic, 

 A., Guaiaretic, C 20 H 26 O 4 , a dibasic acid extracted by 

 Hlasiwetz (1859) from guaiac resin, of which it forms 

 about \o c / , by the action of alcoholic potash or by 

 quicklime. It forms a crystalline salt with the former 

 and an amorphous compound with the latter. The 

 crystals are soluble in ether, alcohol, benzol, chloro- 

 form, carbon disulfid, and acetic acid, insoluble in am- 

 monia and water, melt below 8o° C , and volatilize 

 without decomposition. It gives a grass-green colora- 

 tion with ferric chlorid. A., Gummic. See Arabin 

 (Illus. Diet.). A., Gurjunic, C,. 2 H M 4 , a constituent 

 of gurjun balsam occurring in opaque crystalline masses 

 of weak acid reaction, melting at 220 C, soluble in 

 absolute alcohol or in ether, slowly in benzene ; insol- 

 uble in water and dilute alcohol. A., Gymnenic, 

 C 32 H 55 12 , a greenish- white amorphous powder with a 

 harsh acid taste, soluble in alcohol and chloroform and 

 slightly soluble in water and ether. It is obtained 

 from the leaves of Gymnena sylvestre, R. Br., and ob- 

 tunds the taste for bitter or sweet things, but not for 

 sour, pungent, or astringent ones. It is used as a 

 mouth-wash in 12% hydro- alcoholic solution before 

 taking nauseous medicines. A., Helvelic, C, 2 H 20 O 7 , 

 an acid obtained from fresh belladonna, occurring as a 

 yellow transparent syrupy liquid of strong acid reac- 

 tion. A., Helvellaic, an acid which destroys red 

 blood-corpuscles, obtained by Bohm from juice of the 

 mushrooms belonging to the genus Hthitlla. A., 

 Hematic, A., Haematic, a yellow crystalline body 

 derived by Treviranus from carbonized red blood-cor- 

 puscles by action of sodium carbonate and washing 

 with alcohol. A., Hematoxylic, A., Haematoxylic. 

 See Hematoxylin (Illus. Diet.). A., Hendecatoic 

 or Hendecoic. See ./., Uttdecylic, Ttrfdc of Fatty 

 Acids (Illus. Diet.). A., Heptoic. Sic ./.. /■'.inui- 

 thylic (Illus. Diet). A., Heptylacetic. See A., 



Pelargonic (Illus. Diet.). A., Heptylcarbonic. See 

 A., Caprylic (Illus. Diet.). A., Heptylic. See^.. 

 Enanthylic (Illus. Diet.). A., Hexabasic, an acid 

 containing 6 atoms of hydrogen replaceable by bases. 

 A., Hidrotic, C 5 H 9 N0 7 , a noncrystallizable acid ob- 

 tained by Favre from perspiration, soluble in water 

 and alcohol and evolving ammonia when heated. A.. 

 Homosalicylic. See A . , Cresotic . A., Homotoluic, 

 A., Homotoluylic. See A., Hydrocinnamic (Illus. 

 Diet.). A., Hydantoin-hydroparacumaric. Samu 

 as A., Tyrosinhydantoinic. A., Hydra-. See A.. 

 Hydrogen. A., Hydracrylic, C 3 H 6 3 , an acid iso- 

 meric with lactic acid. See A., Ethylenelactic. A., 

 Hydrantoic. See A., Glycoluric (Illus. Diet.). A.. 

 Hydrated, one united with the elements of water.! 

 A., Hydrochinonsulfuric, an ethereal acid found in! 

 small quantities in the urine after phenol-poisoning. i 

 A., Hydrocyanic, Aqueous, the hydrocyanic acidj 

 obtained by distillation, which contains a certain peri 

 centage of water before removal by fractional distilla-l 

 tion and desiccation. A., Hydrocyanic, Inhalation 

 of. See A., Hydrocyanic, Vapor (Illus. Diet.). A.,j 

 Hydrocyanic, Syrup of, a preparation consisting ofi 

 dilute hydrocyanic acid, I part ; syrup, 125-200 parts.! 

 A., Hydroferricyanhydric. See A., Ferrihydrocy\ 

 anic. A., Hydroferricyanic. See A., FerrihydrocyA 

 anic. A., Hydrofluosilicic, H 2 SiF 6 , a dibasic ack 

 obtained from silicon tetrafluorid by dissolving it ir 

 water. Its aqueous solution is a colorless, transparent.! 

 acrid, fuming liquid ; it volatilizes at 49 ° C. without;' 

 residue. Syn., A., Silicofluoric. A., Hydrogen, ai 

 acid containing hydrogen, A., Hydroparacumaric [ 

 C 9 H 10 O 3 , a derivative of tyrosin and formed in thd 

 human system during the process of intestinal putre 1 

 faction; it maybe prepared from paracoumaric acid bj 

 action of sodium amalgam, forming small prisms, soli: 

 ble in alcohol, water, and ether, and melting at 125 i 

 C. Syn., Oxyphenylpropionic acid. A., Hydrospi- 

 roylic, the volatile oil of Spiraea ulmaria. A., Hy 

 drotic. See A., Hidrotic. A., Hydroxyacetic. St 

 A., Glycollic (Illus. Diet.). A., Hydroxyoleic. Sw 

 A., Ricinoleic (Illus. Diet.). A., Hydroxyphenyl I 

 amidopropionic. See Tyrosin (Illus. Diet.). A.| 

 Hyoglycocholic, C 27 H 43 N0 5 , a crystallizable glyco 

 cholic acid found in pig's bile, usually occurring as 

 resinous mass, soluble in alcohol, insoluble in water 

 A, Hyotaurocholic, C 26 H 4:V NS0 6 , a biliary acid! 

 which as a sodium salt is found in small amount in th« 

 bile of swine; it is analogous to hyoglycocholic acid! 

 A., Hypogeic, A., Hypogaeic, C Ifi II., O 2 , a mono 

 basic acid found by Gossmann and Scheven 1 5 

 peanut (Arachis liypogn-a) oil, occurring as fine color 

 less stellate groups of needles which melt at 33 

 solidify again at 28-30 C. ; soluble in alcohol am 

 ether; insoluble in water. A., Hypoxanthylic. Se< 

 A , Sarcylic. A., Ichthulinic, a substance obtain; 

 by Levene from the ichthulin of codfish eggs, simila 

 in composition to avivitellinic acid. A., Ichthyolsul 

 fonic, C 28 H 38 S 3 O b , an acid produced from Tyrolea 

 bituminous mineral by the action of sulfuric arid; ii 1 

 strongly acid and contains about 16.4C? of sulfur, I 

 is antiphlogistic and astringent, and is used in th 

 form of its salts, chiefly "ichthyol," the animoniui 

 salt. A., Indigosulfonic, A., Indigosulfuric 

 C 16 H 10 S 2 N 2 O 8 , obtained from indigotin bytheaction < 

 15 parts of fuming sulfuric acid ; it occurs as an amoi 

 phous blue solid or paste, soluble in water or alcohol 

 Syn., Indigotindisulfonic acid ; Sulfoindyli 

 Sulfoindigotic acid; Sulfindylic acid ; Solubl 

 blue. A., Indigotic. See .■/., Mononitrosalit 

 Indigotindisulfonic. Sec ./., Indigosulfonic. A 

 Indigotinmonosulfonic, C lc ll,,N./> 2 . SO.II, a inn;'- 



