36

Disinfectant soaps, 66

Distearine, 7

Distillation, glycerine, 114

Distilled glycerine, 114

Doeglic acid, 11

Double distilled glycerine, 115

Dregs in fats and oils, Determination of, 120, 121

Drying soap, 71, 78-80

Dynamite glycerine, 115

E.

Elaidin reaction, 12

Electrical production of soap, 59

Elaeomargaric acid, 12

Elaeostearic acid, 12

Enzymes, Action of, 15-18

Erucic acid, 11

Essential oils, 96-107

---- ---- Examination of, 127-130

Ester value, 119, 128

Ether soap, 90

Eucalyptus oil, 100

Evaporation to crude glycerine, 112, 113

F.

Fat, Bone, 30

---- Dika, 36

---- Maripa, 34

---- Marrow, 30

---- Niam, 34

---- Tangkallah, 37

---- Treatment of bone, 43

Fats, Decomposition by bacteria of, 18

---- Treatment of animal, 43

---- Waste, 30

Fats and oils, Determination of acid value of, 118

---- ---- ---- of bromine absorption of, 122

---- ---- ---- of dregs, etc., in, 120, 121

---- ---- ---- of free acidity of, 117

---- ---- ---- of iodine absorption of, 121, 122

---- ---- ---- of saponification

---- ---- ---- equivalents of, 118

---- ---- ---- of saponification value, 118

---- ---- ---- of specific gravity of, 117 of titre of, 122, 123

---- ---- ---- of unsaponifiable matter in, 119

---- ---- ---- of water in, 120

---- ---- ---- Yield of glycerine from, 116

Fatty acids, 9-13, 31

---- ---- Classification of, 10

---- ---- Direct combination with alkali of, 45, 46

---- ---- in soap, Determination of, 131

---- ---- ---- Examination of, 133, 134

---- ---- Preparation by acid process, 19-21

---- ---- ---- by ferment process, 16

---- ---- ---- by Twitchell's process, 20

---- ---- Saturated, 11

---- ---- Unsaturated, 11

Fennel oil, 100

Ferment process for preparation of fatty acids, 16

Ferments, action of, 15-18

Ficocerylic acid, 10

Filling soap, 65

Fish oils, 30

"Fitting," 51

Floating soap, 90, 91

Fluorides in soap, 88

Formaldehyde soap, 88

Framing soap, 66

Free alkali in soap, Estimation of, 132

---- caustic in soap, Neutralising, 66

---- fat in soap, Determination of, 133

---- fatty acids, Determination of, 117

G.

Geraniol, 108

Geranium oils, 101

Geranium-sur-rose oil, 101

Ginger-grass oil, 101

Glycerides, 7, 8

Glycerine, Chemically pure, 115

---- Crude, 113, 136-139

---- decolorisation, 115

---- distillation, 114

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