460 GERMICIDES — DISINFECTANTS 



strong coal tar odor and burning taste. It is insoluble in water, 

 soluble in alcobol, ether and chloroform. 



Doses. H. 3ij — iv; 8. — 15. D. gr. j— xx; 0.6 — 1.3. 



Action and Uses. It has been recommended as an antiseptic 

 dusting powder combined with starch, etc. Internally it is used aa 

 an intestinal antiseptic, but has been largely replaced by betanaph- 

 thal. 



BETANAPHTHOL 



This is a phenol occurring in coal tar but mostly made from the 

 preceding drug. It occurs in colorless or pale buff colored shining 

 scales or a whitish yellow or white crystalline powder, of a faint 

 phenol odor and pungent taste. 



Doses. Same as for Naphthalenum. 



In action it resembles phenol, but is less toxic. It is used as an 

 intestinal antiseptic and probably ranks next to thymol in the treat- 

 ment of Uncinariasis. It is to be given in 10 to 15 grain doses in 

 capsules and repeated in two hours, preceded and followed by a laxa- 

 tive. It has been advanced as a remedy for skin diseases, but is 

 generally less serviceable than tar. 



* BENZONAPHTHOL 



This is formed by the action of benzoyl chloride on betanaphthol. 

 It is said to escape the action of the digestive juice. It has the 

 advantage of being soluble and tasteless. 



Dose. Dog, gr. ij — ^vij ; 0.13 — 0.5 every 2 hours. 



BISMUTHI BETANAPHTHOLAS 



Synonyms. Orphol, Bismuth Oxide plus Betanaphthol 



It occurs as a light brown insoluble powder, odorless or with a 

 faint odor of betanaphthol, and tasteless. It is useful in intestinal 

 catarrh, because it is not broken up until after leaving the stomach. 



ANILINE DERIVATIVES 



Several aniline derivatives have been used as antiseptics, chief 

 of which are pyoktanin, methylene blue, trypan blue and scarlet red. 



* PYOKTANIN 



Pyoktanin occurs in two forms, blue and yellow. Pyoktanin 

 Blue is chemically Penta et Hexa-methyl-pararosaniline Hydrochlo- 

 ride. It is sometimes called methyl blue or methyl violet, and must 



* Unofficial. 



