Chapter VI: Analytical Methods 127-164

1. Analysis of Oils and Fats 128
Free Fatty Acids 128-130
Moisture 130
Titer 130-132
Determination of Unsaponifiable Matter 132-133
Test for Color of Soap 133-134
Testing of Alkalis Used in Soap Making 134-137

2. Soap Analysis 137-138
Moisture 138-139
Free Alkali or Acid 139-142
Insoluble Matter 143
Starch and Gelatine 143-144
Total Fatty and Resin Acids 144
Determination of Rosin 144-147
Total Alkali 147-148
Unsaponifiable Matter 148
Silica and Silicates 148-149
Glycerine in Soap 149-150
Sugar in Soap 150

3. Glycerine Analysis 150-151
Sampling 151
Analysis 151-154
Acetin Process for the Determination of Glycerol 155-156
The Method 156-159
Ways of Calculating Actual Glycerol Contents 159-160
Bichromate Process for Glycerol Determination
Reagents Required 160-161
The Method 161-162
Sampling Crude Glycerine 162-164