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76 p. C. B.ay'—Chenncal Examination of [No. 1, 



3. 1 "016 gm. oil were digested for 24 hours with 20 "c. c. 1 and 10 c. c. 



CHCI3 



20c. c. I + IO c. c. CHCl3 = 160c. c. NagSgOj (Blank exp.) 



Excess of iodine =1 4 „ ,, 



Dif. 5-6 „ 

 T ,. , 0-01265 X 5-6x100 . ._ 

 lodme degree = TTnTfi ~ 



Corrected number =6-97(1- 0-03) = 6-76. 



4. l'984gm.oil were digested with 30 CO. iod. sol. andlOccCHClg. 

 Excess of iodine = 13 c. c. Na2S20s. 



30c. c. iod. sol.+ lOc. c. CHCl3 = 24c. c. NagSgOg (Blank exp.) 

 X ,. , 001265x11 = 100 „^, 

 Iodine degree = Toftl ~ 



Corrected number =701 (1-003)=6'81. 



Ghee (Clarified Butter.) 



1. 0*9£5 gm. ghee was digested for 24 hours with JOc. c. CHCI3 

 and 20 c. c. iod. sol. 



10 c. c. CHCls + 20 c. c. iod. sol. = 32-8 c. c. NagSjOs 



Excess of iodine = 6'3 „ ,, 



Dif. = 26-5 



^ ^. ^ 0-01265x100x26-5 ^^ , 

 Iodine degree = t^"^ =35'] 



2. 0'216 gm. ghee was digested as above 



27-0 0. c. NajSgOg was taken up by the excess of iodine. 



T A' A 1265 X 5 -8 x100 „„ „ 

 Iodine degi'ee = Tyoifi =33-9 



Mean of the two determinations = 34*5 

 Corrected number = 345 (1-003) = 33-5 

 The saponification equivalent of this sample of ghee was found to 

 be 221 (Seep. 65). 



Another Sample of Ghee. 



1. 0-355 gm. was digested with 20 c. c. iod. sol. and 10 c. c. 

 CHCI3. 10' 3 c. c. NajSgOs were required for the excess of iodine. 



20 c. c. iod. sol. + 10 c. c. CHCls = 22-6 c c. NagSgOg 



^ -. , 12-3 X 001265x100 ,^. 



Iodine degree = ttttt? = 43-8 



000 



2. 0-303 gm. substance was treated with 20 c. c. iod. sol. and 10c. c. 



CHCI3 ; J2'l c c NajSjOg sol, were taken up by the excess of iodine. 



T A- A 10-5x 0-01265x100 ,^ _ 

 Iodine degree= ^^^ = 43-8 



