R 265 at 15° C., possessing a somewhat sweet taste; below o° C. it solidifies to a white crystalline mass, which melts at 17° C. When heated alone it partially volatilizes, but the greater part decomposes; under a pressure of 12 mm.
When heated with CS 2 to 1 00° C. under pressure, it forms liquid nitrogen sulphide, N 2 S 5, a mobile red liquid which solidifies to an iodine-like mass of crystals which melt at Io-I I° C. Water, alkalis and acids decompose it into sulphur and ammonia (W.
It boils at 78.3° C. (760 mm.); at - 90° C. it is a thick liquid, and at - 130° it solidifies to a white mass.
It melts to a reddish-brown liquid, which solidifies to a yellow crystalline mass on cooling.
The salt is thus obtained as a white porous mass, fusible at a red heat (838° C., Carnelley) into a colourless liquid, which solidifies into a white opaque mass.
I) solidifies, its carbon may form cementite following the cementite-austenite diagram so that white, i.e.
As the melting point of the metal is gradually raised by the progressive decarburization, it at length passes above the temperature of the furnace, about 1400° C., with the consequence that the metal, now below its melting point, solidifies in pasty grains, or " comes to nature."
This ebb continues, and, combined with the progressive narrowing of the molten lake as more and more of it solidifies and joins the shore layers, gives rise to the pipe, a cavity like an inverted pear, as shown at C in fig.
It is a yellow-coloured liquid which solidifies at o° C., and fumes on exposure to air.
It solidifies at - 21° C. (Quincke) to a dark brown solid.
It is used as a pigment (cadmium yellow), for it retains its colour in an atmosphere containing sulphuretted hydrogen; it melts at a white heat, and on cooling solidifies to a lemon-yellow micaceous mass.
On cooling it solidifies to a crystalline mass which fuses at - 80° C. (Ruff, ibid.).
It solidifies at about 0° C, to a mass of long needles, and is very volatile.
Immersed in cold water gelatin does not dissolve but swells up; it dissolves readily in hot water, forming, according to the quantity present, a thick jelly which solidifies to a hard mass on cooling (the " glue " of the woodworker), or a thin jelly (used in cookery).
Under certain conditions, as when latex is allowed to stand or is centrifugalized, a cream is obtained consisting of the liquid globules, which may be washed free from proteid without change, but, either by mechanical agitation or by the addition of acid or other chemical agent, the liquid gradually solidifies to a mass of solid caoutchouc. The phenomenon therefore resembles the change known to the chemist as polymerization, by which through molecular aggregation a liquid may pass into a solid without change in its empirical composition.
The liquid litharge when allowed to cool solidifies into a hard stone-like mass, which, however, when left to itself, soon crumbles up into a heap of resplendent dark yellow scales known as "flake litharge."
It melts at 485° and solidifies on cooling to a translucent, horn-like mass; an early name for it was plumbum corneum, horn lead.
Again, by raising the temperature, a metal in the solid state can be melted and liquefied, and poured into a mould to assume any form desired, which is retained when the metal cools and solidifies again; the gaseous state of a metal is revealed by the spectroscope.
It melts at 160°, and on cooling solidifies to a glassy mass, which on standing gradually becomes opaque and crystalline.
It fuses at 339° to a colourless liquid, which solidifies on cooling to a white fibrous mass, known in pharmacy as sal prunelia.
It solidifies in a freezing mixture, on the addition of a crystal of phenol, and then melts at 3 0 -4° C. It boils at 202° 8 C. Its aqueous solution is coloured bluish-violet by ferric chloride.
For example, the compound Cu3Sn is not indicated in the freezing-point curve, and indeed a liquid alloy of this percentage does not begin to solidify by the formation of crystals of Cu 3 Sn; the liquid solidifies completely to a uniform solid solution, and only at a lower temperature does this change into crystals of the compound, the transformation being accompanied by a considerable evolution of heat.
The alloy of the point e is the ternary eutectic; it deposits the three metals simultaneously during the whole period of its solidfication and solidifies at a constant temperature.
The presence in an alloy of a eutectic which solidifies at a much lower temperature than the main mass, implies a great reduction in tenacity, especially if it is to be used above the ordinary temperature as in the case of pipes conveying super-heated steam.
It may be liquefied, the liquid boiling at o° C., and on further cooling, it solidifies, the solid melting at -48° C. Many tellurides of metals have been examined by C. A.
1, OP. The molten gold, which is of a pale green colour, solidifies at once in the iron moulds, and the bars can be taken out immediately.
It is easily liquefied and the liquid boils at-33-7° C., and solidifies at - 75° C. to a mass of white crystals.
When kept for some time in sealed tubes it changes to a yellowish liquid, from which a yellow flocculent substance gradually separates, and finally it suddenly solidifies to a dark red mass, which appears to be a polymeric form.
The liquid boils at - 190° C., and solidifies at - 21 I ° C. (L.
The fused product solidifies on cooling into a colourless glass.
In height, the surface again solidifies and the process is repeated.'
This process continues till the composition of the liquid phase reaches that of the eutectic, when the whole mass solidifies on the further loss of heat without change of temperature, giving a very definite freezing point.
The acid solidifies when strongly cooled, the solid melting at - 47° C. Concentrated nitric acid forms with water a constant boiling mixture which boils at 120.5° C., contains 68% of acid and possesses a specific gravity of 1.414 (15.5° C.).
Chloroform solidifies in the cold and then melts at - 62° C.; it boils at 61.2° C., and has a specific gravity I.
Blowholes may be lessened or even wholly prevented by adding to the molten metal shortly before it solidifies either silicon or aluminium, or both; even as little as 0.002% of aluminium is usually sufficient.
The acid is an oily liquid of unpleasant smell, and solidifies at - 19° C.; it boils at 162.3° C., and has a specific gravity of o 9746 (o° C.).
It is a colourless liquid of very unpleasant smell, which boils at 198° C., and solidifies in a freezing mixture, the crystals obtained melting at -1° C. It shows all the characteristic properties of an acid chloride.
When the " candles " of carbon monoxide appear, the pasty mass is quickly drawn out of the furnace into iron " bogies," where it solidifies into a grey, porous mass, the " black-ash."
Each, where it solidifies and forms the caustic soda known to commerce.
It can be liquefied at - 34° C. under atmospheric pressure, and at - 102° C. it solidifies and crystallizes.
It can be liquefied, the liquid boiling at 9.9° C., and on further cooling it solidifies at - 79° C. It is very explosive, being resolved into its constituents by influence of light, on warming, or on application of shock.
Potassium perchlorate, Kcio 4, can be obtained by carefully heating the chlorate until it first melts and then nearly all solidifies again.
Commercial linseed oil has a peculiar, rather disagreeable sharp taste and smell; its specific gravity is given as varying from 0.928 to 0.953, and it solidifies at about - 27°.
It melts at about 460° to a clear yellow liquid, which, on cooling, solidifies to a translucent resinous mass.
It is usually sent on the market in the form of sticks, which were at one time prepared by sucking the molten material up glass tubes; but the dangers to the workmen and other disadvantages of this method have led to its replacement by a continuous process, in which the phosphorus leaves the melting-pot for a pipe surrounded by water, in which it solidifies and can be removed as a continuous rod.
It is a colourless, non-fuming gas, which gives a colourless, mobile liquid at -10° and 20 atmospheres; the liquid boils at -95° and solidifies at -160° (Moissan, Comptes rendus, 1904, 138, p. 789).
The olefines - ethylene, &c. - are generally absorbed by a very strong sulphuric acid prepared by adding sulphur trioxide to sulphuric acid to form a mixture which solidifies when slightly cooled.
Arsenic trichloride, AsCl3, is prepared by distilling white arsenic with concentrated sulphuric acid and common salt, or by the direct union of arsenic with chlorine, or from the action of phosphorus pentachloride on white arsenic. It is a colourless oily heavy liquid of specific gravity 2.205 (o° C.), which, when pure and free from chlorine, solidifies at - 18°C., and boils at 132 °C. It is very poisonous and decomposes in moist air with evolution of white fumes.
Phthalyl chloride, C 6 H 4 (COC1) 2 or C 6 H 4 (CCl2)(CO)0, formed by heating the anhydride with phosphorus chloride, is an oil which solidifies at 0° and boils at 275°.