66 P. 0. Ra.y— Chemical Examination of [No. 1, 



Another Sample op Ghee. 



1. 1-547 gm. were treated with 20 c. c. alcoholic potash, the mouth 

 of the flask was closed with a cork to which was attached a long glass 

 tube, which acted as a reflex condenser. 



20 c. c. KOH =16-5 c. c. ^ HCl (Blank tit.) 



Excess of alkali =4"5 ,, 

 ... • 1 ^ 12x0-02805x103 

 Saponification equivalent = "T^vj = ^ 1 7*5 



2. 1'1512 gm. ghee treated with 30 c. c. potash. 

 30 c. c. KOH =25 c. c. ^HCl (Blank tit.) 



Excess of alkali = 16*0 „ „ 



. , , 9x0-02805x103 „,^„ 

 Saponification equivalent = TT^ =219"-i 



Saponification Equivalent for Mowa " Bdtter." 

 Oil of Bassia latifolia — (Nat. order — Sapotaceoe.) 

 This substance by its physical characters, e. gr., color, consistency, 

 melting point, &c., much resembles ghee, and is therefore frequently used 

 for its falsification. 



3. r39G gm. oil wei^e placed in a stout l2oz. bottle, together with 

 40 c. c. alcoholic potash solution. The mouth of the bottle was closed 

 with a India-rubber cork, fastened by means of wire. It was then kept 

 immersed in boiling water, with occasional shaking, 



40 c. c. alcoholic potash were also heated under exactly the same 

 conditions — 



40 c. c. KOH =31-6 c. c.^ HCl (Blank exp.) 



Excess of alkali =21*6 „ ,, 



^ . . . . 10x0-02805x103 ^^^^ 

 Saponification equivalent = =200-9 



2. 2-086 gm. oil heated under pressure just as above — 



20 c. c. KOH =29-3 c. c. ^ HCl (Blank.) 



Excess of alkali =14-6 ,, ,, 



•n .- • 1 . 14-7x0-02805x103 ,^„^ 



Saponification equivalent= = 197-6 



Si-Uoo 



The soap solutions were perfectly clear and colourless. 



To ensure complete saponification it is preferable to treat Mowa 



oil -ander pressure as above. If the oil be simply heated on a water- 



