(A) = Milligrams of copper.
(B) = Milligrams of milk sugar.
(A) (B) (A) (B) (A) (B) (A) (B)
100 71.6 120 86.4 140 101.3 160 116.4
101 72.4 121 87.2 141 102.0 161 117.1
102 73.1 122 87.9 142 102.8 162 117.9
103 73.8 123 88.7 143 103.5 163 118.6
104 74.6 124 89.4 144 104.3 164 119.4
105 75.3 125 90.1 145 105.1 165 120.2
106 76.1 126 90.9 146 105.8 166 120.9
107 76.8 127 91.6 147 106.6 167 121.7
108 77.6 128 92.4 148 107.3 168 122.4
109 78.3 129 93.1 149 108.1 169 123.2
110 79.0 130 93.8 150 108.8 170 123.9
111 79.8 131 94.6 151 109.6 171 124.7
112 80.5 132 95.3 152 110.3 172 125.5
113 81.3 133 96.1 153 111.1 173 126.2
114 82.0 134 96.9 154 111.9 174 127.0
115 82.7 135 97.6 155 112.6 175 127.8
116 83.5 136 98.3 156 113.4 176 128.5
117 84.2 137 99.1 157 114.1 177 129.3
118 85.0 138 99.8 158 114.9 178 130.1
119 85.7 139 100.5 159 115.6 179 130.8
(A) (B) (A) (B) (A) (B) (A) (B)
180 131.6 223 164.2 266 197.2 309 231.4
181 132.4 224 164.9 267 198.0 310 232.2
182 133.1 225 165.7 268 198.8 311 232.9
183 133.9 226 166.4 269 199.5 312 233.7
184 134.7 227 167.2 270 200.3 313 234.5
185 135.4 228 167.9 271 201.1 314 235.3
186 136.2 229 168.6 272 201.9 315 236.1
187 137.0 230 169.4 273 202.7 316 236.8
188 137.7 231 170.1 274 203.5 317 237.6
189 138.5 232 170.9 275 204.3 318 238.4
190 139.3 233 171.6 276 205.1 319 239.2
191 140.0 234 172.4 277 205.9 320 240.0
192 140.8 235 173.1 278 206.7 321 240.7
193 141.6 236 173.9 279 207.5 322 241.5
194 142.3 237 174.6 280 208.3 323 242.3
195 143.1 238 175.4 281 209.1 324 243.1
196 143.9 239 176.2 282 209.9 325 243.9
197 144.6 240 176.9 283 210.7 326 244.6
198 145.4 241 177.7 284 211.5 327 245.4
199 146.2 242 178.5 285 212.3 328 246.2
200 146.9 243 179.3 286 213.1 329 247.0
201 147.7 244 180.1 287 213.9 330 247.7
202 148.5 245 180.8 288 214.7 331 248.5
203 149.2 246 181.6 289 215.5 332 249.2
204 150.0 247 182.4 290 216.3 333 250.0
205 150.7 248 183.2 291 217.1 334 250.8
206 151.5 249 184.0 292 217.9 335 251.6
207 152.2 250 184.8 293 218.7 336 252.5
208 153.0 251 185.5 294 219.5 337 253.3
209 153.7 252 186.3 295 220.3 338 254.1
210 154.5 253 187.1 296 221.1 339 254.9
211 155.2 254 187.9 297 221.9 340 255.7
212 156.0 255 188.7 298 222.7 341 256.5
213 156.7 256 189.4 299 223.5 342 257.4
214 157.5 257 190.2 300 224.4 343 258.2
215 158.2 258 191.0 301 225.2 344 259.0
216 159.0 259 191.8 302 225.9 345 259.8
217 159.7 260 192.5 303 226.7 346 260.6
218 160.4 261 193.3 304 227.5 347 261.4
219 161.2 262 194.1 305 228.3 348 262.3
220 161.9 263 194.9 306 229.1 349 263.1
221 162.7 264 195.7 307 229.8 350 263.9
222 163.4 265 196.4 308 230.6 351 264.7
(A) (B) (A) (B) (A) (B) (A) (B)
352 265.5 365 276.2 377 286.5 389 296.8
353 266.3 366 277.1 378 287.4 390 297.7
354 267.2 367 277.9 379 288.2 391 298.5
355 268.0 368 278.8 380 289.1 392 299.4
356 268.8 369 279.6 381 289.9 393 300.3
357 269.6 370 280.5 382 290.8 394 301.1
358 270.4 371 281.4 383 291.7 395 302.0
359 271.2 372 282.2 384 292.5 396 302.8
360 272.1 373 283.1 385 293.4 397 303.7
361 272.9 374 283.9 386 294.2 398 304.6
362 273.7 375 284.8 387 295.1 399 305.4
363 274.5 376 285.7 388 296.0 400 306.3
364 275.3
=144. Table for the Determination of Maltose.=—The copper and alkaline
solutions employed for the oxidation of maltose are the same as those
used for invert and milk sugars.
In the manipulation twenty-five cubic centimeters each of the copper
and alkali solutions are mixed and boiled and an equal volume of the
maltose solution added, which should not contain more than one per
cent of the sugar. The boiling is continued for four minutes, an equal
volume of cold recently boiled water added, the cuprous oxid separated
by filtration and the metallic copper obtained in the manner already
described. The weight of maltose oxidized is then ascertained from the
table.
_Example._ Weight of impure maltose taken, ten grams to a liter:
Quantity used, twenty-five cubic centimeters:
Weight of copper obtained 268 milligrams:
Weight of maltose oxidized 237 milligrams:
Weight of impure maltose taken 250 milligrams:
Percentage of maltose in sample 94.8.