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Antimony Trioxide: Roasted Antimony Fused with More Metal (Thorpe 1912)
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Charlie

28. Ukwakira 2026DE
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Antimony Trioxide: Roasted Antimony Fused with More Metal (Thorpe 1912)

Antimony trioxide is a white, fusible powder that turns to vapour at red heat. Powdered antimony heated in a shallow dish becomes antimony tetroxide. Fused with more metal, the tetroxide gives the trioxide, and the spare metal sinks. Source: Thorpe, Dictionary of Applied Chemistry vol. 1 (1912), Antimony. Not given: amounts, heats or times. The furnace and crucible are ours. Work under a hood with a respirator, because the oxide fumes at red heat. Picture drawn by Youblob.
Hagati
1 day

Amabwiriza

1

Powder the antimony and roast it

Powder antimony and heat it in a shallow dish until it has turned into antimony tetroxide. Keep back some unroasted metal. Not given: heat and time. Work under a hood.

Ibikoresho by'iyi ntambwe:

AntimwaniAntimwani1 as required

Ibikoresho bikenewe:

Isekuru n'UmuhiniIsekuru n'Umuhini
Isahani ntoyaIsahani ntoya
Ifuru ya muffleIfuru ya muffle
Akabati k'umwotsi (gafite umuyoboro)Akabati k'umwotsi (gafite umuyoboro)
Agapfukamunwa ka P100Agapfukamunwa ka P100
Uturindantoki twihanganira ubushyuheUturindantoki twihanganira ubushyuhe
2

Fuse with unchanged metal

Fuse the tetroxide with unchanged antimony in a crucible. They react to antimony trioxide, and the spare metal sinks to the bottom. Ours: a lidded crucible, kept below red heat as far as you can, since the trioxide is volatile at red heat. Heated longer in air it goes back to the tetroxide.

Ibikoresho by'iyi ntambwe:

AntimwaniAntimwani1 as required

Ibikoresho bikenewe:

Ikirahure cy'Ibumba Rirwanya UmuriroIkirahure cy'Ibumba Rirwanya Umuriro
Ifuru ya muffleIfuru ya muffle
Amakoro y'Icyombo GishongeshaAmakoro y'Icyombo Gishongesha
Akabati k'umwotsi (gafite umuyoboro)Akabati k'umwotsi (gafite umuyoboro)
Agapfukamunwa ka P100Agapfukamunwa ka P100
Uturindantoki twihanganira ubushyuheUturindantoki twihanganira ubushyuhe
3

Break out and store the oxide

Ours: let it cool, break the white oxide away from the metal button, powder it and keep it in a closed, labelled jar.

Ibikoresho bikenewe:

Isekuru n'UmuhiniIsekuru n'Umuhini
Agapfukamunwa ka P100Agapfukamunwa ka P100
Amacupa y'ikirahure cyijimye afite imifuniko idapfaAmacupa y'ikirahure cyijimye afite imifuniko idapfa

Ibikoresho

1
  • 1 as required
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Ibikoresho bikenewe

9

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