219 



Monobasic Acids. 



516. PALMITIC ACID. HC 18 H 31 O 8 . 



a. Commercial specimen. 



6. Crystalline cakes, melting point 132 to 140 Fahr. 



c. Crystalline cakes, melting point 140.8 Fahr. 

 Note. Specimen b is a finely crystallized cake of the "Best Palm 

 Btearine " of commerce, and specimen c is nearly pare. These speci- 

 mens were presented by Mr. J. Wilson, manager of Price's Patent 

 Candle Co. 



517. MAROAKIC ACID. 



a. Pearly crystalline scales. 



Note. Tliis specimen is probably a mixture consisting chiefly of 

 stearic and palmitic acids. It is the margario acid of Chevreul. 



518. STEARIC ACID. HC i8 Hgg Og. 



a. Pearly crystalline scales, melting point 155 Fahr. 

 Note. This specimen was presented by Mr. J. Wilson, manager of 

 Price's Patent Candle Co., and is as pure chemically as possible. 



519. OLEIC ACID. HC 18 HJJ 3 . 



a. Colourless oily liquid, pure. 



LACTIC SERIES, C n H^Os. 



520. LACTIC ACID. HC S H 6 8 . 



a. Pure, concentrated, sp. gr. 1'210. 



b. Diluted, for medicinal purposes, sp. gr. 1'030. 



KIN 1C SERIES. C n Ha, _ 2 0. 



521. KINIC ACID. HC 7 H n 6 . (Quinic Acid.) 



a. Crystals. 



BEN ZOIC SERIES, CH 2u _ 8 O t 



522. BKNZOIC ACID. HC 7 H B Q 2 . 



a. Crystals. 

 6. Ditto. 



c. Ditto, from elephant's urine. 



Note. Specimen a was obtained from Palambang benzoin, a sample 

 of which will be found in the Materia Medica Collection, No. 861. o. 

 Specimen b was obtained from hippuric acid, prepared from urine. 



523. BENZOIC CHLORIDE. C 7 H 5 OC1. (Benzoyl Chloride.) 



a. Colourless pungent liquid. 



524. HIPPDBIC ACID. HC 9 H 8 N0 3 . (Benzamidacetic Acid.) 



a. White acicular crystals. 



Note. Specimens 523 and 524 are placed here for the sake of con- 

 venience. 



OXYBENZOIC SERIES, C B H s _ 8 0, 



525. SALICYLIC ACID. HC 7 H 6 O s . 



o. Crystalline powder, not quite pure. 



