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Epsom Salt: Magnesian Limestone Digested in Dilute Sulphuric Acid, Ure 1839
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Epsom Salt: Magnesian Limestone Digested in Dilute Sulphuric Acid, Ure 1839

Epsom salt, sulphate of magnesia, was first got from the springs at Epsom in 1695. Andrew Ure (1839): the simple way is to digest magnesian limestone in dilute sulphuric acid; the lime falls out as sulphate of lime and the clear liquid is boiled down to crystals. Gloves and goggles for the acid. The picture: Epsom salt crystals.
Utangiye
Three days

Amabwiriza

1

Grind

Break and grind the magnesian limestone to a coarse powder and weigh it.

Ibikoresho by'iyi ntambwe:

Dolomite (ishwagara irimo manyeziya)Dolomite (ishwagara irimo manyeziya)1 kg

Ibikoresho bikenewe:

Isekuru n'UmuhiniIsekuru n'Umuhini
Akayunguruzo Gafite Urukoma RutoAkayunguruzo Gafite Urukoma Ruto
Umunzani w'ibiroUmunzani w'ibiro
Agapfukamunwa k'UmukunguguAgapfukamunwa k'Umukungugu
2

Digest in acid

In a wooden tub, stir the powder into dilute sulphuric acid a little at a time. Add acid until fresh acid no longer fizzes on the stone (ours), and leave it to stand.

Ibikoresho by'iyi ntambwe:

Aside ya sulifuriki yorohejeAside ya sulifuriki yoroheje4 litiro

Ibikoresho bikenewe:

Ikibindi cy'imbahoIkibindi cy'imbaho
Akati k'Ikirahure ko KuvangaAkati k'Ikirahure ko Kuvanga
Amadarubindi yo Kwirinda IbinyabutabireAmadarubindi yo Kwirinda Ibinyabutabire
Uturindantoki tw'ikawusuUturindantoki tw'ikawusu
3

Settle and pour off

Let the white sulphate of lime settle to the bottom, then pour the clear liquid off it.

Ibikoresho bikenewe:

Ikibindi cy'imbahoIkibindi cy'imbaho
Inkono NiniInkono Nini
Amadarubindi yo Kwirinda IbinyabutabireAmadarubindi yo Kwirinda Ibinyabutabire
Uturindantoki tw'ikawusuUturindantoki tw'ikawusu
4

Crystallise

Boil the clear liquid down (step 5) and leave it to cool: the salt forms in four-sided prisms. Drain, dry and keep it in a closed jar.

Ibikoresho bikenewe:

Inkono NiniInkono Nini
InkwiInkwi
Isahani yo kumishaIsahani yo kumisha
Icupa ry'IkirahureIcupa ry'Ikirahure
Amadarubindi yo Kwirinda IbinyabutabireAmadarubindi yo Kwirinda Ibinyabutabire
Uturindantoki tw'ikawusuUturindantoki tw'ikawusu
5

Water for crystallising

Gupakira ikaye ya Jupyter…

Ibikoresho

2

Ibikoresho bikenewe

12

Iki gishushanyo gikora

Thumbnail
Agateganyo

Sulfate ya magnesium (umunyu wa Epsom)

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Oil of Vitriol Distilled from Green Vitriol, the Nordhausen Way, Ure 1839
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Oil of Vitriol Distilled from Green Vitriol, the Nordhausen Way, Ure 1839

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Dilute Sulfuric Acid: Concentrated Acid Poured into Water
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Dilute Sulfuric Acid: Concentrated Acid Poured into Water

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