28 
Solubility. — Only slightly soluble in water, but readily in alcohol 
and ether. Specific gravity at 25° C., 2.808. It is only slightly vola- 
tile at ordinary temperature, boils at 148° C., and solidifies at 6° C. 
Absolute bromofortn is decomposed in presence of light and air 
more rapidly than chloroform. The addition of A per cent of alcohol, 
as in the case of chloroform, will preserve bromoform for months. 
When decomposed, bromine is set free, which colors the liquid yel- 
lowish red. 
Dose.— “Average dose: 0.2 Cc. (3 minims).” (U. S. P.) 
Caution. — Keep in dark amber-colored, glass-stoppered bottles in a 
cool place, protected from light. 
CATAPLASMA KAOLINI. 
Cataplasm of Kaolin. 
Introduced in response to a request for an external clay preparation; 
similar to a number of commercial articles. The constituents are 
kaolin (57.7 per cent), boric acid, methyl salicylate, glycerin, and small 
quantities of thymol and oil of peppermint. 
CERATUM RESIN.E COMPOSITUM. 
Compound Rosin Cerate. 
Composed of rosin, } T ellow wax, suet, turpentine, and linseed oil. 
For formula and method of preparation see U. S. Pharmacopoeia. 
Minor changes in the constituents, not however affecting the strength 
of the active ingredients, have been made in all the cerates with the 
exception of Ceratum Resinas. 
Ceratum Cantharidis, for instance, should no longer have the odor 
of oil of turpentine. 
CHLORALFORMAMIDUM. 
Chloralformamide. 
CCl 3 .CH(OIi)NH.COH 
Chloralum formamidatum (P. G.). Also known as Chloralamide , a 
name which, because it is both inaccurate and misleading (being prop- 
erly applied to another substance), should not be used. 
Chemistry. — It is formed by the direct union of anhydrous chloral 
and formamide, as shown by the following reaction: 
H 
OH 
NHHCG 
Chloral Formamide Chloralformamide 
Properties.- — Colorless, lustrous crystals, odorless, and having a some- 
what bitter taste. 
H 
CC1 3 C< Q-f hconh 2 = CC1 3 C 
