ACID 



31 



ACID 



hophenolsulfuric. See Aseptol (Illus. Diet.). A., 

 Orthosilicic, H 4 Si0 4 = SiO, . 2H 2 0, a tetrabasic 

 acid, known only in aqueous solution, produced by dia- 

 lyzing a solution of an alkaline silicate previously treated 

 with HC1 ; it forms a colorless liquid which coagu- 

 lates to a gelatinous mass on standing. Syn., Silicic 

 A., Orthosulfocarbolic. See Aseptol (Illus. 

 Diet.). A., Orthoxybenzoic, salicylic acid. A., 

 Orthoxyphenylsulfurous. See Aseptol (Illus. Diet). 

 A., Oxacetic. See A., Glycollic (Illus. Diet.). A., 

 Oxalacetic, Dumas' name for tartaric acid. A., 

 Oxuric, Yauquelin's name for impure alloxanic acid. 

 A.. Oxygen, an acid which contains more oxygen 

 ' than is requisite for saturation. A., Oxymandelic, 

 ! CgH 8 4 , an acid found by Schultzen and Riess in 

 urine in a case of acute yellow atrophy of the liver, 

 forming shining flexible needles, easily soluble in alco- 

 hol, in ether, and in hot water, slightly soluble in cold 

 water, melting at 162 C. A., Oxymuriatic, I. Hy- 

 drochloric acid. 2. Chloric acid. 3. Chlorin. A., 

 Oxynaphthoic. See A., Alphaoxynaphlhoic (Illus. 

 Diet.). A., ^-Oxynaphthoic, C n H 8 3 , obtained 

 from sodium J-naphthol by the action of carbon 

 dioxid with heat. It is a surgical antiseptic. Syn., 

 i jl-Naphtholcarboxylic acid ; 3-Carbonaphtholic acid. 

 A., Oxynaphthylorthooxytoluylic. See Epicarin. 

 A., Oxyphenylamidopropionic. See TV rosin (Illus. 

 Diet. 1. A., Oxyphenylsulfuric. See A., Sulphocar- 

 us. Diet.). A., J-Oxypropionic. See A., 

 Ethylenelactic. A., Oxyquinolin Carbonic. See 

 \ A.yCynurenic. A., Oxytoluic. See A., Cresotic. A., 

 Oxytoluyl, substances formed by oxidation of tolu- 

 ene. A., Palicouric, an acid found by Peckolt in Psy- 

 i chotria marcgravii, occurring in stellate groups of 

 ' odorless needles, with acid taste, soluble in water, in- 

 i soluble in alcohol, and having no poisonous properties. 

 Cf. Myoclonic Acid. A., Paraamidobenzolsulfonic. 

 -I.. Sulphanilic (Illus. Diet.). A., Parabanic. 

 Ixalylurea (Illus. Diet.). A., Paracamphoric, 

 ; an optically inactive variety of camphoric acid prepared 

 by mixing camphoric acid from ordinary camphor (dex- 

 I trocamphoric acid) with that made from matricaria 

 I camphor (lei'ocamphoric acid). A., Paraellagic. 

 Same as A., Puf gallic (Illus. Diet.). A., Parana - 

 maric. See A., Afaleic. A., Paraoxyphenylacetic, 

 C.H.Oj, a decomposition product of proteids in the 

 j intestine, found in minute quantities in the urine. 

 A., Paraoxyphenylglycolic, an acid found in urine 

 under pathologic conditions, as in acute yellow 

 atrophy. A., Paraoxyphenylpropionic, C 6 H 4 - 

 r 'H . C,H 4 . COOH, an acid formed from tyrosin in 

 the putrefactive changes of proteids in the intestine 

 and found in small quantities in the urine. A., Para- 

 phenolsulfonic. See A., Snlphocarbolic ( Illus. Diet ). 

 A., Pararosolic. See Aurin (Illus. Diet.). A., 

 Paratartaric. See A., Racemic (Illus. Diet.). A., 

 Parilinic, A., Parillinic. See Smilacin (Illus. 

 A., Paroxyphenyleneamidopropionic. See 

 rosin (Illus. Diet.). A. of Pearls, acid phosphate 

 of sodium. A., Pentabasic, one containing 5 car- 

 boxyl groups. A., Pentatomic, one containing 5 

 toms of replaceable hydrogen. A., Perbromic, 

 BrO. . OH, an oily colorless liquid formed from per- 

 chloric acid by action of bromin. A., Periodic, 

 ■*9« ~ 2H 2 0, an acid obtained from iodin by the 

 action of concentrated perchloric acid occurring in 

 e deliquescent crystals which turn yellow on ex- 

 posure to the air. It is soluble in water and alcohol, 

 slightly in ether, and melts at I30°-I33° C. It is a 

 'Werful oxidizer. Syn., Heptaiodic acid. A , Phena- 

 ; *• C ioH„N0 3 = C R H. . CH 2 CO . NH . CH, - 

 I wUH, an acid produced in the animal body bv a 



grouping of the phenylacetic acid, C 6 H 5 . CH 2 . COOH, 

 formed by the putrefaction of the proteids with glyco- 

 coll. It has been prepared by Salkowski from horse's 

 urine, and probably occurs in human urine. [Ham- 

 marsten and Mandel.] A., Phenic, A., Phenylic. 

 See A., Carbolic (Illus. Diet.). A., Phenicinsulfo- 

 nic, A., Phenicisulfuric. See A., Indigotinr 

 sulfonic. A., Phenol, carbolic acid. A., Phenol- 

 sulfonic. See . 4., Snlphocarbolic (Illus. Diet). A., 

 Phenylaceturic. See.-/., Phenaceturic. A., Phenyl- 

 hydrazinlevulinic. See Antithermin (Illus. Diet.). 

 A., Phenylic, carbolic acid. A., Phenylsalicylic, 

 C 13 H ]0 O;„ a white antiseptic powder, soluble in alcohol, 

 ether, and glycerin, but very slowly in water ; it is used 

 as a surgical dressing as iodoform. Syn., Orthoxy- 

 diphenylcarbolic acid ; PhenyLrthooxybenzoic acid. 

 A., Phenylsulfuric. See A., Snlphocarbolic (Illus. 

 Diet.). A., Phocenic. See A., Valeric (Bins Diet.). 

 A., Phcenicinsulfonic. See .-/., Indigotinmonosul- 

 fonic. A. , Phosphoantimonic, a yellowish, very acid 

 substance obtained from antimonium pentachlorid by 

 the action of concentrated aqueous solution of sodium 

 phosphate (Schulze). It is used as an alkaloid reagent. 

 A., Phosphoric, Anhydrous, P 2 O s , obtained from 

 phosphorus by complete combustion, occurring as a 

 bulky, light, white deliquescent powder, soluble in 

 water. It is used as a chemical agent. A., Phos- 

 phoric, Glacial, A., Phosphoric, Monobasic. See 

 A., Aletaphosphoric (Illus. Diet.). A., Phosphoric, 

 Tribasic, ordinary phosphoric acid. A., Photosan- 

 tonic. See Photosantonin (Illus. Diet.). A., Phy- 

 setic, A., Physetoleic, an isomer of hypogeic acid 

 and contained in the spermaceti oil found in cavities 

 of the head of the sperm whale ( Physeter macroceph- 

 alus). It melts at 30 C. It differs from hypogeic 

 acid in not yielding sebacic acid on distillation. A., 

 Picroacetic, a saturated solution of picric acid in 1 £ 

 acetic acid. A., Picrochromic, a mixture of picric 

 acid (solution saturated in water) iovols.; I £ chromic 

 acid solution 25 vols.; water 65 vols. A., Picrohy- 

 drochloric, a mixture of water 100 vols.; hydro- 

 chloric acid (of 25% HC1) 8 vols.; picric acid as much 

 as will dissolve. A., Picronitric, a mixture of water 

 100 vols.; nitric acid (of 25% N 2 O s ) 5 vols.; picric 

 acid as much as will dissolve. A., Picronitro- 

 chromic, a mixture of 1 part of picronitric acid and 4 

 parts i<& chromic acid. A., Picronitroosmic, a 

 mixture of picronitric acid 6 vols.; 2 r ' ( osmic acid 1 

 vol. A., Picrosulfuric, a mixture of distilled water 100 

 vols.; sulfuric acid 2 vols.; picric acid as much as will 

 dissolve (about 25%). Syn., A., Concentrated or un- 

 diluted picrosulfuric. A., Pimaric, C^H^O^ an acid 

 obtained from powdered gallipot resin by action of dil- 

 ute alcohol, very similar to sylvicacid and passing into 

 it when distilled in vacuo. It occurs in crusts of micro- 

 scopic crystals, soluble in boiling alcohol and ether, 

 melting at 210 C. Recent investigations show that 

 pimaric acid consists of three isomerids, one of them 

 the pimaric acid described by Laurent, dextropimaric 

 acid, and levopimaiic acid (a. v.). A., Pimentic. 

 See Eugenol (Illus. Diet.). A., Pipitzahoic, A., 

 Pipitzahoinic, C 15 H. ;0 O 3 , a purgative principle dis- 

 covered by Rio de la Loza in species of Perezia, and 

 also obtained from Trixis radiale, occurring in glossy 

 golden scales, soluble in alcohol and ether, melting at 

 I03°-I04° C. It is used as a mild drastic. Dose, 

 0.2-0.3 gm. (3-5 gr.). A., Pivalic. See A.. 

 Valeric, Tertiary. A., Plasminic, a secondary nucle- 

 inic acid obtainable from yeast. It is soluble in water 

 and precipitates albumins in acid solution. Its phos- 

 phoric acid radicle is capable of forming a true organic 

 iron compound containing 1 c / r of iron. It does not 



