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Bismuth Oxide: Subnitrate Boiled with Sodium Hydroxide Solution (British Pharmacopoeia, 1907)
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Charlie

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Bismuth Oxide: Subnitrate Boiled with Sodium Hydroxide Solution (British Pharmacopoeia, 1907)

Boil bismuth subnitrate with sodium hydroxide solution: bismuth hydroxide falls and sodium nitrate stays dissolved. At 100 °C the hydroxide loses its water, leaving bismuth oxide, a dull lemon-yellow powder. Source: The Dispensatory of the United States of America (1907), Bismuthi Oxidum, after the British Pharmacopoeia. Not given: amounts, strength or time; those are stated as not given. The 10 % lye, washing and filter are ours. Picture drawn by Youblob.
Hagati
half a day

Amabwiriza

1

Boil the subnitrate with soda lye

Boil bismuth subnitrate with sodium hydroxide solution (ours: 10 %). Bismuth hydroxide is precipitated; sodium nitrate stays in solution. Not given: amounts and time. Goggles and gloves.

Ibikoresho by'iyi ntambwe:

Sub-nitrate ya bismuthSub-nitrate ya bismuth1 as required

Ibikoresho bikenewe:

Hidorogiside ya sodiyumu, umuti wa 10 %Hidorogiside ya sodiyumu, umuti wa 10 %
Igikombe cya BorosilikateIgikombe cya Borosilikate
Urubaho rushyushyaUrubaho rushyushya
Amadarubindi yo Kwirinda IbinyabutabireAmadarubindi yo Kwirinda Ibinyabutabire
Uturindantoki twa NitirileUturindantoki twa Nitirile
2

Wash and dry to the oxide

Filter off the precipitate and wash it (ours: with distilled water). Hold it at 100 °C: the hydroxide gives up its water and dull lemon-yellow bismuth oxide remains.

Ibikoresho bikenewe:

Urupapuro rwo KuyungururaUrupapuro rwo Kuyungurura
Amazi YatunganyijweAmazi Yatunganyijwe
Ifuru yo kumishahoIfuru yo kumishaho

Ibikoresho

1

Ibikoresho bikenewe

8

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Bismuth Subnitrate: Bismuth through Nitrate and Carbonate to the White Powder (USP 1870)
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Bismuth Subnitrate: Bismuth through Nitrate and Carbonate to the White Powder (USP 1870)

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Bismuth Oxide: Bismuth Burned at a Red-White Heat in a Muffle (Thorpe 1913)

Bismuth Oxide: Bismuth Burned at a Red-White Heat in a Muffle (Thorpe 1913)

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