PETROLATUM 



PHENOL. 



39 



PETROLATUM. 



Petrolatum is a purified mixture of methane hydrocarbons. It is obtained from 

 petroleum by distilling oft the more volatile portions. 



Petrolatum Album is petrolatum decolorized by filtering through animal charcoal. 

 It is used extensively as a base for cerates and ointments. 



Petrolatum Liquidum consists of those petroleum distillates boiling between 360 

 to 390 C., after the more volatile portions have been removed. It is further treated 

 by being purified and decolorized. It has a wide use as a vehicle for medicaments in- 

 tended to be used by atomization. 



Properties: 

 Petrolatum : 



Appearance 



Feel 



Color 



Odor 



Taste ... 



Petr. Album : 

 Appearance . 



Feel 



Color 



Odor 



Taste ... 



Petr. Liquid. : 

 Appearance . 



Feel 



Color 



Odor 



Taste ... 



PHENOL. 



Phenol is hydroxybenzene. It is customarily obtained from coal-tar by securing 

 the oils boiling at 182 C., purifying, and redistilling. It is also made synthetically 

 from benzene or from aniline. It should contain not less than 97% CeHsOH. Its 

 solution in water is the official Phenol Liquefactum (=87% Ce 



Properties: 



Gently heat some of the Phenol crystals 



Incompatibilities: To Phenol T. S. add 



Albumin, T. S - 



Chloral Hyd 



1 gt FeCU 



O W^Q " 



K 2 MnO 4 , T. S 



Na 2 HPO 4) T. S 



Phenol is used as an antiseptic and disinfectant in l% to 5% solutions. Locally 

 it indurates and benumbs the skin. If used in too strong solutions, it will cauterize, 

 and may produce gangrene. It has no well-defined internal utility. 



