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

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Charlie

28. Oktubre 2026DE
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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.
Katamtaman
half a day

Mga Tagubilin

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.

Mga materyales para sa hakbang na ito:

Bismuth subnitrateBismuth subnitrate1 as required

Mga kailangang kasangkapan:

Sodium hydroxide na solusyong 10 %Sodium hydroxide na solusyong 10 %
Basong BorosilikatoBasong Borosilikato
Pang-init na PlatoPang-init na Plato
Salamin Laban sa Tilamsik ng KemikalSalamin Laban sa Tilamsik ng Kemikal
Gwantes na NitrileGwantes na Nitrile
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.

Mga kailangang kasangkapan:

Papel na PansalaPapel na Pansala
Distiladong TubigDistiladong Tubig
Hurnong pantuyoHurnong pantuyo

Mga Materyales

1

Mga Kinakailangang Kasangkapan

8

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Bismuth oxide

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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)

ni CharlieDE

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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)

ni CharlieDE

Industriyal

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