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Potassium Permanganate: Pyrolusite Fused with Caustic Potash, Turned Purple by Carbonic Acid
Benjah-bmm27 (Wikimedia Commons) · Public domain
Charlie

Dicipta oleh

Charlie

14. Oktober 2026DE
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Potassium Permanganate: Pyrolusite Fused with Caustic Potash, Turned Purple by Carbonic Acid

Glauber fused pyrolusite with potash in 1659 and watched the solution turn from green to violet to red: the chemical chameleon. Fuse the ore with caustic potash and saltpetre to green potassium manganate, then bubble carbonic acid through its solution to make purple permanganate. It is a strong oxidiser: keep it away from paper, wood and oil. The picture: potassium permanganate crystals.
Lanjutan
Two days

Arahan

1

Grind and weigh

Grind the pyrolusite fine and sift it. Weigh out caustic potash and saltpetre for it (step 6).

Bahan untuk langkah ini:

Bijih pirolusit (mangan dioksida)Bijih pirolusit (mangan dioksida)100 g
Kalium hidroksidaKalium hidroksida130 g

Alatan diperlukan:

Kalium nitrat (sendawa)Kalium nitrat (sendawa)
Lesung dan AluLesung dan Alu
Ayak Bermata HalusAyak Bermata Halus
Neraca dua piringNeraca dua piring
Gogal Percikan KimiaGogal Percikan Kimia
Sarung tangan getahSarung tangan getah
2

Fuse

Melt the caustic potash in an iron crucible in the furnace and stir in the ore and saltpetre a little at a time with an iron rod. Keep it hot, stirring, until the mass is dark green. Lift it out and let it cool.

Alatan diperlukan:

Mangkuk pijar besiMangkuk pijar besi
Relau ArangRelau Arang
ArangArang
Rod besiRod besi
Penyepit Mangkuk PijarPenyepit Mangkuk Pijar
Sarung tangan kimpalanSarung tangan kimpalan
Gogal Percikan KimiaGogal Percikan Kimia
3

Dissolve the green salt

Break up the cold melt and dissolve it in water. The solution is green.

Bahan untuk langkah ini:

Air SulingAir Suling1 liter

Alatan diperlukan:

Bikar BorosilikatBikar Borosilikat
Rod Pengacau KacaRod Pengacau Kaca
Gogal Percikan KimiaGogal Percikan Kimia
Sarung tangan getahSarung tangan getah
4

Turn it purple

Bubble carbon dioxide through the solution from a glass tube until it turns deep purple and brown manganese dioxide settles out.

Alatan diperlukan:

Gas karbon dioksidaGas karbon dioksida
Kit Tiub KacaKit Tiub Kaca
Bikar BorosilikatBikar Borosilikat
Gogal Percikan KimiaGogal Percikan Kimia
Sarung tangan getahSarung tangan getah
5

Crystallise

Let the brown sludge settle and pour the clear purple liquid off it; do not filter through paper, which it attacks. Evaporate on the sand bath until crystals form on cooling. Drain the dark purple needles and keep them in a closed glass jar.

Alatan diperlukan:

Piring PenyejatPiring Penyejat
Rendaman pasirRendaman pasir
Balang KacaBalang Kaca
Gogal Percikan KimiaGogal Percikan Kimia
Sarung tangan getahSarung tangan getah
6

Charge and yield

Memuatkan buku nota Jupyter…

Bahan

3

Alatan Diperlukan

19

Blueprint ini membuat

Thumbnail
Pemegang tempat

Kalium permanganat — KMnO4

Free

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Blueprint berkaitan

Blueprint ini berkongsi pengetahuan — teknik, bahan atau prinsip

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Carbon Dioxide Gas: Chalk and Dilute Acid, Collected from the Bottom Up

Carbon Dioxide Gas: Chalk and Dilute Acid, Collected from the Bottom Up

oleh CharlieDE

Kimia

4
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oleh ForgeNO

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CC0 Domain Awam

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