A new system of chemical philosophy, Volume 2, Part 1

Name: A new system of chemical philosophy, Volume 2, Part 1
Author: Dalton, John

Dalton, John

Atomic theory; Chemistry, Inorganic

I have not succeeded in endeavouring to combine sulphur and magnesia in
the dry way; but a liquid sulphuret is easily formed by the action of
double affinity.

Let a quantity of the liquid quadrisulphuret of lime be treated with
a solution of sulphate of magnesia, so that the sulphuric acid may be
sufficient for the lime; by digesting in a moderate heat, the sulphate
of lime is precipitated, carrying with it one fourth of the sulphur,
and a trisulphuret of magnesia remains in solution. I have not observed
any remarkable feature of distinction between this sulphuret and that
of lime, except as above noticed in the proportions of their compounds.

_Hydrosulphuret of magnesia._ This compound may be formed by pouring
sulphuretted hydrogen water into recently precipitated magnesia; it
does not differ much from that of lime. One atom of sulphuretted
hydrogen (15), combines with one of magnesia (17), and the compound is
soluble in water.


3. _Sulphuret of barytes._

_Protosulphuret._ The protosulphuret of barytes may be procured the
same way as that of lime, by heating hydrate of barytes and sulphur
till the mixture becomes red. It is very little soluble in water, and
accords in other respects with the like compound of lime. It consists
of 68 barytes and 14 sulphur, or 100 barytes and 20½ sulphur.

_Quadrisulphuret._ The quadrisulphuret of barytes may be formed the
same way as quadrisulphuret of lime, by boiling the hydrate of barytes
and sulphur together. A yellow solution of the compound is formed, not
distinguishable in appearance from that of lime; and it appears to
be analogous to it in most of its properties. By acquiring oxygen it
becomes colourless sulphuretted sulphite of barytes, and crystalizes in
needles; in this last respect it differs from that of lime. The maximum
density of liquid quadrisulphuret I have not had an opportunity of
ascertaining; it is 1.07 or upwards; that of the liquid sulphuretted
sulphite is much less than that of lime; the crystals are found in a
liquid so low as 1.004 sp. gr. They have a fine silky lustre when dry,
and a yellowish colour; heated they burn with a blue flame and leave
a white mass of sulphate preserving the same crystalline appearance
as before, and lose about 20 per cent. of weight. Ten grains of the
crystals of sulphuretted sulphite, when treated with liquid oxymuriate
of lime to saturation, require 2+ grains of oxygen and yield 8 grains
of sulphate of barytes, together with an excess of sulphuric acid which
with muriate of barytes gives 8 grains more of sulphate. From these
facts it may be concluded that the sulphuretted sulphite consists of
one atom barytes, 2 sulphur, 2 oxygen, and 2 water, and that 4 more of
oxygen are derived from the oxymuriatic acid to convert the sulphurous
oxide into sulphuric acid. The sulphuretted sulphite of barytes seems
to pass into sulphate by length of time. The weight of the atom of
quadrisulphuret of barytes is 124; the compound in mass consists of 100

Public-domain text, read in full here on John Shaqi.

Opening the text

A new system of chemical philosophy, Volume 2, Part 1Dalton, John

Science

A new system of chemical philosophy, Volume 2, Part 1

Dalton, John

Atomic theory; Chemistry, Inorganic

I have not succeeded in endeavouring to combine sulphur and magnesia in
the dry way; but a liquid sulphuret is easily formed by the action of
double affinity.

Let a quantity of the liquid quadrisulphuret of lime be treated with
a solution of sulphate of magnesia, so that the sulphuric acid may be
sufficient for the lime; by digesting in a moderate heat, the sulphate
of lime is precipitated, carrying with it one fourth of the sulphur,
and a trisulphuret of magnesia remains in solution. I have not observed
any remarkable feature of distinction between this sulphuret and that
of lime, except as above noticed in the proportions of their compounds.

_Hydrosulphuret of magnesia._ This compound may be formed by pouring
sulphuretted hydrogen water into recently precipitated magnesia; it
does not differ much from that of lime. One atom of sulphuretted
hydrogen (15), combines with one of magnesia (17), and the compound is
soluble in water.


3. _Sulphuret of barytes._

_Protosulphuret._ The protosulphuret of barytes may be procured the
same way as that of lime, by heating hydrate of barytes and sulphur
till the mixture becomes red. It is very little soluble in water, and
accords in other respects with the like compound of lime. It consists
of 68 barytes and 14 sulphur, or 100 barytes and 20½ sulphur.

_Quadrisulphuret._ The quadrisulphuret of barytes may be formed the
same way as quadrisulphuret of lime, by boiling the hydrate of barytes
and sulphur together. A yellow solution of the compound is formed, not
distinguishable in appearance from that of lime; and it appears to
be analogous to it in most of its properties. By acquiring oxygen it
becomes colourless sulphuretted sulphite of barytes, and crystalizes in
needles; in this last respect it differs from that of lime. The maximum
density of liquid quadrisulphuret I have not had an opportunity of
ascertaining; it is 1.07 or upwards; that of the liquid sulphuretted
sulphite is much less than that of lime; the crystals are found in a
liquid so low as 1.004 sp. gr. They have a fine silky lustre when dry,
and a yellowish colour; heated they burn with a blue flame and leave
a white mass of sulphate preserving the same crystalline appearance
as before, and lose about 20 per cent. of weight. Ten grains of the
crystals of sulphuretted sulphite, when treated with liquid oxymuriate
of lime to saturation, require 2+ grains of oxygen and yield 8 grains
of sulphate of barytes, together with an excess of sulphuric acid which
with muriate of barytes gives 8 grains more of sulphate. From these
facts it may be concluded that the sulphuretted sulphite consists of
one atom barytes, 2 sulphur, 2 oxygen, and 2 water, and that 4 more of
oxygen are derived from the oxymuriatic acid to convert the sulphurous
oxide into sulphuric acid. The sulphuretted sulphite of barytes seems
to pass into sulphate by length of time. The weight of the atom of
quadrisulphuret of barytes is 124; the compound in mass consists of 100

Public-domain text, read in full here on John Shaqi.

A new system of chemical philosophy, Volume 2, Part 1

A new system of chemical philosophy, Volume 2, Part 1

No reviews yet