Chemical Technology: Or, Chemistry, Applied to the Arts and to Manufactures, Volume 1Lea and Blanchard, 1848 |
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Overige edities - Alles bekijken
Chemical Technology: Or, Chemistry, Applied to the Arts and to ..., Volume 1 Friedrich Ludwig Knapp Volledige weergave - 1848 |
Chemical Technology: Or, Chemistry, Applied to the Arts and to ..., Volume 1 Friedrich Ludwig Knapp Volledige weergave - 1848 |
Veelvoorkomende woorden en zinsdelen
action alkali ammonia amount aperture apparatus becomes boiler boiling boracic acid borax burner burning candles carbonic acid caustic cent chamber charcoal chimney chloride chloride of sodium cistern coal coke color combustion common salt condensed consists contains cooling crude crystals cubic feet cwts decomposed decomposition dissolved distillation draught earth employed equiv experiments fire flame flue fluid fuel furnace gases heap heat hydrate hydrogen ignited illuminating inches iron kind lamp lamp-black light lime magnesia manner manufacture mass matter means melted metallic mixed mixture muriatic acid naphtha nitrate nitric acid nitrogen obtained ordinary oxide oxygen palm oil passes peat portion potash potassium powder produced proportion quantity retorts rosin saltpetre saponification separated soap soda soluble solution specific gravity steam stearine substances sulphate sulphuret sulphuric acid surface tallow temperature tion tube vapor vessel weight whilst whole wick wood
Populaire passages
Pagina 486 - ... has an aperture in it, connected by a mouthpiece with a metal tube, which serves as a ventilating flue, and which, after passing horizontally to the centre of the chandelier, there ascends to produce draught and carry off the burnt air...
Pagina 386 - For though thou wash thee with nitre, and take thee much sope, yet thine iniquity is marked before me, saith the Lord GOD.
Pagina 139 - Thus the shadow thrown by wall lamps is unimportant, as the lamp itself covers the shadow : in like manner, the shadow of a common study lamp cannot be considered as a fault, being used only by one person, although its prevention is always an improvement.
Pagina 347 - ... of common salt, or 66 per cent. of the sample, a quantity which is never actually present. Nothing now remains to be done but to weigh the saltpetre remaining upon the filter ; there is, however, some difficulty attending this, as the solution which clings to it must first be removed. To effect this removal, the filter is spread out upon blotting paper placed upon a porous substance (a slab of gypsum, for instance), that at the expiration of twenty-four hours the saltpetre may be taken out and...
Pagina 450 - The arrangements for making the ivory-black are very simple. The dead oil, which is kept in a large reservoir, is heated by means of steam, to render it more fluid, so that it may flow through the pipe A, Fig.
Pagina 251 - ... French plan, aided by a system of fagots called "graduation," and by throwing weak brine into the air and letting it fall in showers on high piles of brush, and other analogous methods to increase evaporation. The greater number of these springs, however, are far too dilute, with the existing prices of salt, to repay the cost of evaporation by means of fuel. At Salzhausen, for instance, the production of 100 pounds of salt presupposes the evaporation of about 339 cubic feet of brine.
Pagina 485 - ... eight parts (by weight) of oxygen to form water. A London Argand gas lamp, in a closed shop window, will produce in four hours, two pints and a half of water. A pound of oil also produces nearly three pounds of carbonic acid, and a pound of gas two and a-half pounds of carbonic acid. For every cubic foot of gas burnt, rather more than a cubic foot of carbonic acid is produced. As carbonic acid is a deadly poison, an atmosphere containing even one-tenth of it is fatal to animal life. The various...
Pagina 162 - Peckston, in an eight hours' distillation the relative quantities of gas given off are. in the first hour 20, in the second 15, in the third 14, in the fourth nearly 13, in the fifth 12, in the sixth 10, in the seventh 9, and in the eighth about 8 per cent, of the whole quantity, when the fire is uniform and the vessels are constantly at a red heat. The cubic foot at the end, therefore, costs 21 times as much as at the beginning.
Pagina 378 - It is still better to use the sulphide of carbon mixed with absolute alcohol. As soon as the charcoal is washed, a current of dry air is drawn through the tube by means of an aspirator, the tube itself being confined in an air batli at 248°.
Pagina 408 - ... the substances which impart the mottled appearance to soap, are only held in suspension in consequence of its thick state of fluidity. If the mottled appearance is to be entirely removed, and white soap produce'd, it is necessary to add a quantity of water, that those substances may subside, while the soap is still in a perfectly liquid state in the boiling-pan. This additional quantity of water is not again separated, but is sold with the soap. This is the reason why so much importance is attached...