A System of Instruction in the Practical Use of the Blowpipe: Being a Graduated Course of Analysis for the Use of Students, and All Those Engaged in the Examination of Metallic Combinations |
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Page 34
... absorb it greedily from the air . These must be kept in glass bottles , with glass stoppers , fitted air - tight by grinding . A. REAGENTS OF GENERAL USE . 1. Carbonate of Soda .- ( NaO , CO2 ) Wash the bicarbonate of soda ( NaO , 2CO2 ) ...
... absorb it greedily from the air . These must be kept in glass bottles , with glass stoppers , fitted air - tight by grinding . A. REAGENTS OF GENERAL USE . 1. Carbonate of Soda .- ( NaO , CO2 ) Wash the bicarbonate of soda ( NaO , 2CO2 ) ...
Page 49
... absorbed , or it may form a portion of its constitution . If the substance contain sulphur , the sublimate upon the cold part of the tube may be recognized by its characteristic appearance , especially if the substance should be a ...
... absorbed , or it may form a portion of its constitution . If the substance contain sulphur , the sublimate upon the cold part of the tube may be recognized by its characteristic appearance , especially if the substance should be a ...
Page 57
... absorbing oxygen from the air , developes sufficient heat to maintain the metal in a fluid state , until it becomes entirely covered with crystals of antimonious acid so formed . BISMUTH . This metal fuses with ease , and under both ...
... absorbing oxygen from the air , developes sufficient heat to maintain the metal in a fluid state , until it becomes entirely covered with crystals of antimonious acid so formed . BISMUTH . This metal fuses with ease , and under both ...
Page 60
... absorbed into the charcoal , and has parted with its oxy- gen . As sulphide of potassium is more volatile than sulphide of sodium , an incrustation is formed from the former sooner than from the latter of these salts , and is ...
... absorbed into the charcoal , and has parted with its oxy- gen . As sulphide of potassium is more volatile than sulphide of sodium , an incrustation is formed from the former sooner than from the latter of these salts , and is ...
Page 61
... absorbed into its pores , and volatilize in the form of white fumes , which are deposited upon the charcoal at some distance from the assay . When the saline films so formed are submitted to the reducing flame , they disappear ...
... absorbed into its pores , and volatilize in the form of white fumes , which are deposited upon the charcoal at some distance from the assay . When the saline films so formed are submitted to the reducing flame , they disappear ...
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Common terms and phrases
alkali alumina antimony arsenic assay baryta Behavior Mineral bismuth blowpipe blowpipe flame blue color borax cadmium carb carbonate of soda ceding Cerium char charcoal Chemistry Chimie chloride clear bead coal cobalt cold colorless colors the flame compounds cooling copper crystals dark edit exposed external flame flame blue flame of oxidation flame of reduction forceps Fuses fusible glass tube glass-bulb green color grey hydrate hydrochloric acid ignition incrusts the charcoal infusible insoluble intumescence iron lead lime lithia litmus paper London magnesia manganese mass melts metallic oxides microcosmic salt moistened nickel Niobic nitric acid opaque open tube outer flame oxidation flame oxygen Paris platinum platinum wire potash potassa powder present produce protoxide reac red color red heat reduced reduction flame sesquioxide silicates silver soluble Special reactions strontia sublimate substance sulphate sulphide sulphuric acid Telluric Acid tellurium tion Titanic Acid vapor violet violet color volatilized vols yellow color
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Page 16 - The operation depends upon a little artifice in blowing through the pipe, which is in reality more difficult to describe than to acquire. " The effect intended to be produced is a continual stream of air for many minutes, if necessary, without ceasing. This is done by applying the tongue to the roof of the mouth, so as to interrupt the communication between the mouth and the passage of the nostrils ; by which means the operator is at liberty to breathe through the nostrils, at the same time that...
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