Benzoyl-aconine is left as a transparent colourless non-crystalline varnish of a melting-point near 125°.
Paraffin with a melting-point of 50° C. or upwards does well.
Certain regularities attend the corresponding property of the melting-point.
Such a curve is called the curve of fusion, or the melting-point curve.
If the melting-point lies below this temperature, we have to do with other substances (azones).
Even the insulation in the coils and generators has a melting-point higher than that of porcelain.
Basic compounds and fluxes cause a lowering of the melting-point and a shortening of the vitrification range.
Pure tantalum is harder than steel; it may be drawn into fine wire; and its melting-point is very high (about 5100°F.).
The melting-point of pure chloral hydrate is 57, the boiling-point 96-98 C.
Again, the melting-point is probably a great deal higher for substances under great pressure.
|melting point |
The temperature at which a solid, given sufficient heat, becomes a liquid. For a given substance, the melting point of its solid form is the same as the freezing point of its liquid form, and depends on such factors as the purity of the substance and the surrounding pressure. The melting point of ice at a pressure of one atmosphere is 0°C (32°F); that of iron is 1,535°C (2,795°F). See also state of matter.