12] 
then titrating with aqueous 10 potassium hydroxide, using phenol- 
phthalein as an indicator: 
TABLE I.—Percentage free fatty acids (as oleic). 
4 No. At start. Ba anni ett 
fate \ pumas Sp RE See ENS ane Botte ene tae 0. 06 0. 06 0.09 0. 60 
vii 2.29 Ad oe ee eee Sa ge 0.06 0.06 0.08 »0, 48 
p ie nee te Ney ny etait Sits eros ee a ER 1.2 1.3 1.5 19 | 
/ OES SOONER TENG Ae | 1.2 1.5 1.5 1.7 
SiO eo earn eee eee ee 1.4 1.6 2.1 2.6 
odo Dele icee ANE ak ten) ee ee Gee ti eae 5.9 6.1 
Hy ie Oy 71d Ie OAD 22k ow: | eae ee ee | SO 7.6 
Ce ee ee as ORS ace vB 0.10 0.16 0.19 0. 30 
fi sidsius te, oa Oe net, Os SEED oe 0.16 0.18 0.19 0.27 
Scot etches Ik 2 ee wr a 0.16 0.14 0.19 0.30 
, Sone RSE Meee Ac crs ae en ae ee a 0.16 0.16 0.18 0.25 
[AO sce Me ane et ono 0.16 0.16 0.21 0.28 
1 etic ant eke rac Neos ht a es a 0.13 0.18 0.25 0.28 
02 co P Fein ea eae a el 0.13 0.10 0.10 0.14 
EMR asa Sia eet eet TURE Ene 8a) 0.13 0.09 0.09 0.15 
Bh eee ee ee a EN can 3.5 3.7 4.0 4.3 
RB aero 00 et 0,82 |_.....2...- SS a 
Deen ee ay <a Cas pele eg Annes Aste et 1.6 7 ie eee | 
Pisce Ee ca ate eee Oe Bit a ll 0.09 0.09 0.14 0.16 
Oe ek ee ee 8 0.16 0.18 0.25 0.27 
10:bt isis wiht cane oe ame bo 8 1,18 1.14 1.34 1.58 
Oso PP og acl SO re so 0.69 0.69 0.74 0.85 
| Pee en ec RR as Se ee 0. 69 0.69 0.74 0.82 
: EE: MORE SA RAEN De, a 8 ARNON Re ee Pt a ene aed) AP See 
WB So Sci spend tea e ste ee 1.4 1.6 1.8 2.0 
7 ER ee ROS mG ane 5 ERS. 1.4 1.5 3 1.8 
eae ata RR LO Se eNO ee, 2 i) Bech sas 2.6 3.4 3.6 3.9 
Rn es ha ee 2.6 2.6 ie | 3.5 
= | EE EO cine Si Mra ea. Re 2.1 2.4 2.5 2.8 
98 3.0 3.5 4.0 47 | 
cn ee 0. 08 0.38 0.60 0.69 
SASS ee ee. PT SS 0.08 0.13 0.16 0.19 | 
ee acs orca es a Cs ee 2.0 ri ee es ak 
poise adevcitinie woos cas canteen ee eeee es ae 6.8 7.5 7.9 8.1 
BG eee repre eek ee et 6.9 7.2 
34 deca auc cued adeien aeons Oh Se ea 10.2 11.0 
Be en ee 5.0 3 y SS Aes Ge 
*Through the courtesy of Prof. A. H. Gill, of the Massachusetts Institute of Technology, I have 
been given some further data on the keeping qualities of this oil. A sample packed in a sealed tin 
can was shipped to him at Boston and tested there when it was about three months old. On arrival 
it was described as being almost water white and of perfectly sweet odor. It then contained only 
0.088 per cent free acid as oleic, a figure which corresponds very closely to that obtained here at the 
same time. 
>This oi] was kept in a large bottle. A sample in a small bottle showed an acidity of only 0.09 
at this time. 
At the present time there has been so little change in any of these 
samples that no very definite conclusions can be drawn as to the condi- 
tions which cause rancidity on standing. However, it may be considered 
as established that a pure, fresh, coconut oil can be prepared which con- 
tains a minimum amount of free acid and which shows no unpleasant 
