Development of Karl Fischer Reagents

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Raw rubber NR SBR BR CR NBR Vulcanization accelerants OBS D DM CZ TT Antioxidants DMBPPD IPPD Stearic acid Zinc oxide Paraffin wax Carbon black Sulfur Sample Process oil Chapter III: Applications - 2 Heating temperature (°C) 80 100 120 130 150 160 180 200 Figure 25: Optimal Heating Temperature Range for Raw Rubber and Compounding Agents Reference: Muroi, K. et al.: Journal of Japan Rubber Institute, 52, 61 (1979). 151
III-1. Industrial Products 9. Fibers, Papers Because samples of fibers and paper do not dissolve in dehydrated solvent, moisture content is measured using moisture vaporization followed by Karl Fischer titration (volumetric or coulometric). A heating temperature of 130-150 � C is appropriate for moisture vaporization. Moisture content in samples of these substances typically reaches several per cent. The following guidelines are suggested for sample quantities. 1) Volumetric titration: 0.5g 2) Coulometric titration: 0.05-0.1g 152 Key Points Reference: Muroi, K. et al., "Determination of Water Content in Electric Insulating Papers by the Karl Fischer Method" in Bunseki Kagaku 30, 624 (1981). [Examples of Measurement] (1) Moisture vaporization - Volumetric titration Reagents used: Karl Fischer Reagent SS-Z (or SS) Dehydrated Solvent GEX (or MS) + PG (3:1) 50-100ml Substance Bakelite paper Condenser paper Pressed board paper Filter paper Heating Temperature ( � C) 150 150 150 230 Sample Quantity (g) 0.5111 0.4955 0.6646 0.1700 (2) Moisture vaporization - Coulometric titration Reagents used: Aquamicron AX (or AS) 150ml Aquamicron CXU 10ml Measurement Value (mg) 34.70 36.74 49.29 08.82 Moisture Content (%) 6.80 7.42 7.42 5.19
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Introduction The methods used to an
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eagents and analytical methods. As
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5. Officiak Testing Methods and Doc
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8 6.Goument Foods, etc. III-3.Pharm
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Chapter I: Basic Knowledge Chapter
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Chapter I: Basic Knowledge at a tim
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following formula: Chapter I: Basic
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[Procedures] Chapter I: Basic Knowl
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Chapter I: Basic Knowledge electrod
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! Electrolysis cell Titration syste
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1. Karl Fischer Reagent SS-Z, SS Ch
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! Helpful hint - 4 Chapter I: Basic
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[Characteristics] Chapter I: Basic
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[Characteristics] [Applications] Ch
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[Characteristics] [Applications] Ch
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Chapter I: Basic Knowledge a) No es
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2. Electrolytes for use with Ketone
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3. Applicability of Karl Fischer Ti
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Q9 Chapter I: Basic Knowledge What
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Chapter I: Basic Knowledge Na2S2O5+
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Chapter I: Basic Knowledge (3) Sila
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Chapter I: Basic Knowledge Measurin
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[Procedures] Chapter I: Basic Knowl
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Chapter I: Basic Knowledge (3) Usin
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Q12 Chapter I: Basic Knowledge How
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Silicon rubber Figure 6: Sampling S
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Chapter I: Basic Knowledge (2) Syri
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Chapter I: Basic Knowledge (1) Upri
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Aquamicron CXU 5. Official Testing
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2. Japan Pharmaceutical Codex (Revi
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5. Japan LPG Association Standards
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Chapter I: Basic Knowledge Part 2:
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Chapter I: Basic Knowledge 6. Impor
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Chapter II: Applications - 1 Chapte
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Chapter II: Applications - 1 Chapte
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Chapter II: Applications - 1 [Examp
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Examples of substances that can be
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(2) Coulometric titration Reagents
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7. Aldehydes Key Points Chapter II:
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Chapter II: Applications - 1 1) Sam
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8. Organic Acids Key Points Chapter
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(2) Coulometric titration Reagents
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10. Organic Acid Salts Key Points C
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Chapter II: Applications - 1 Substa
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Substance pKa Sample quantity (g) C
Page 102 and 103: (2) Coulometric titration Reagents
Page 104 and 105: Substance Semicarbazide hydrochlori
Page 106 and 107: 17. Acid Anhydrides Key Points Chap
Page 108 and 109: 20. Peroxides Key Points Chapter II
Page 110 and 111: [Examples of Measurement] (1) Volum
Page 112 and 113: Chapter II: Applications - 1 1-Phen
Page 114 and 115: 1. Metals and Simple Substances Key
Page 116 and 117: 2. Inorganic Acids Key Points Chapt
Page 118 and 119: Chapter II: Applications - 1 b) Tit
Page 120 and 121: Substance Calcium hydroxide " Magne
Page 122 and 123: 5. Halides (halogenides) Key Points
Page 124 and 125: Substance Potassium chloride " Lith
Page 126 and 127: 7. Sulfates, Sulfites Key Points Ch
Page 128 and 129: 8. Other Salts Key Points Chapter I
Page 130 and 131: 9. Inorganic Gases Key Points Chapt
Page 132 and 133: Chapter III: Applications - 2 Chapt
Page 134 and 135: Chapter III: Applications - 2 Chapt
Page 136 and 137: 2. Agricultural Chemicals Key Point
Page 140 and 141: Chapter III: Applications - 2 (4) C
Page 142 and 143: Substance LPG Ethylene Propane Buta
Page 144 and 145: 6. Petroleum Products Key Points Ch
Page 146 and 147: Substance Dehydrated solvents [Insu
Page 148 and 149: 7. Plastics Key Points Chapter III:
Page 150 and 151: [Examples of Measurement] (1) Moist
Page 154 and 155: Substance 10. Dyestuff Intermediate
Page 156 and 157: (2) Coulometric titration Reagents
Page 158 and 159: Chapter III: Applications - 2 such
Page 160 and 161: Chapter III: Applications - 2 (2) M
Page 162 and 163: Substance Epoxy resins (powder) Iso
Page 164 and 165: (4) Moisture vaporization - Coulome
Page 166 and 167: Substance Sample Quantity (g) Measu
Page 168 and 169: III-2. Foodstuffs Chapter III: Appl
Page 172 and 173: 2. Cereals and Dried Vegetables Key
Page 174 and 175: 3. Sugars and Condiments Key Points
Page 176 and 177: Chapter III: Applications - 2 [Exam
Page 178 and 179: Substance Heating Temperature ( �
Page 182 and 183: Chapter III: Applications - 2 [Exam
Page 184 and 185: Substance Dehydrated solvents Sampl
Page 186 and 187: Substance Dehydrated solvents Sampl
Page 190 and 191: 2. Natural Products Key Points Subs
Page 192 and 193: Chapter IV: List of Karl Fischer Re
Page 200 and 201: ChapterV: Summary of Selection Proc
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Index 202
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Index B: Bakelite paper ��
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Index Cyclohexanol ��
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Index (L-) Histidine ��
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Index (p-) Nitrophenol ��
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Index Sodium 5'-guanylate ��
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214
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216
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218 copyright©2004by API Corporati
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Printed in Japan Rev. 3
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Development of Karl Fischer Reagents

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