CHAPTER VI,
Proximate CoNsTITVUENTS AND THE MeTHops Examination axp DeTEeRMIN- ATION.
Compound Nature of Oils, Fats, and Waxes; Variations in Com- position with Circumstances of Natural Formation, _.
Methods Employed for Separa- ting Constituents, .
Determination of ' Free Fatty Acids; Free Acid Number, .
Determination of Unsapenidable Constituents, .
Determination of Water,
Adulteration of Fats with sus- pended Matters,
Sulphurised and
nstituents, .
Phoephorised
CHAPTER VIL.
Cuemicit, Reactions or Os, Fats, &c., AND THEIR Uses As Tests or Purity, &c.
Effect of Heat on Oils, Flashing Point, Characteristic Oxidation Produets,
ke. 5
pace |
rack | Action of Sulphuric Acid on Oils arkey Red Oils, . 143 Sulphuric Acid Ther- "'mal Test, MT
| Various Colour Reactions, s 151 Sulphur Chloride Reaction; V1 al canised Oils, . . 154
CHAPTER VIII.
Quanrrrative Reacrioxs oF Ous.
Keettstorfer’s Test—Total Acid 1
16 “Hg s9 2 | Practical Determination of Saponi- 123 | fication Equivalents of Glycer- 23) ides, &e., 159 12g | Proportion of Fatty Acide formed ‘by Saponification, . 163 Helmer's Test; Insoluble’ Acid | Number, . 166 Practical Determination of the | amount of Fatty Acids formed on Saponification, 167
ome ions for Anhydro Deriva- tives, Free Acids, and Unsa- ponifiable Matters, . uv
15 atben Equivalent of Fatty Acids
128; contained in Soap, . 172 Spontaneous Oxidation of Oils, Reichert’s Test and’ Modifica: Fate, te.s Hifect of Light tions thereof, . 73 thereon, . - 129! Bromine and Iodine Absorption ; Spontaneous Combustion, | | 132! Bromine Process, . 176 Film Test; Livache's Test, . |» 133) Touline Process Hubl's Test, 1179 Chemical Changes occurring dur- | Iodine Numbers of Oils, Fats, ing drying of Oils, . + 134) & 180 Elaidin Reaction ; Legler’s Cor | Acetylation’ Test; Benedikt and sistency Tester, .. « :137| Ulzer’s Test, 186 Nitric Acid Testy ss Gotouy 139. Mathyl Toaide Test; Zeisel’s Zine Chloride Reaction and Colour + 191 Test; Action of Zine Chloride Tabulated results of the various on Oleic Acid, . # . 141, Quantitative Tests, . . 194
$4, Processes Used for Extracting, Rendering, Refining, and Bleaching Oils, Fats, &c.