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Camphor Balls: Camphor Wood Steamed under Straw, Sublimed Clean, Ure 1839
Andrew Ure (1839) says camphor lies ready-formed between the wood and the bark of the camphor laurel. Boil chips of the wood under a straw-lined earthen dome and pick the grey crude camphor off the straw, then sublime it with a little quicklime in thin glass over sand into a clear white cake. Camphor catches fire easily: keep flames away from it.
The picture: pressed blocks of camphor.
Lanjutan
Three days
Instruksi
1
1
Chip the wood
Chip the wood
Cut camphor laurel wood into small pieces.
Material untuk langkah ini:
Kayu pohon kamper5 kgAlat yang dibutuhkan:
Kapak2
2
Steam under straw
Steam under straw
Put the chips in an iron cauldron with plenty of water. Line the inside of an earthen pot with rice straw and set it upside down over the cauldron as a dome. Boil: the camphor rises with the steam and settles on the straw as grey grains. Let it cool and pick them off.
Alat yang dibutuhkan:
Kuali besi tuang besar
Periuk tanah tanpa glasir - besar
Jerami padi
Air
Arang3
3
Mix for refining
Mix for refining
Mix the crude camphor as closely as you can with 2 parts in 100 of quicklime, and as much bone black in fine powder for a whiter cake (step 6).
Alat yang dibutuhkan:
Kapur tohor
Pigmen hitam arang tulang
Lumpang dan Alu
Neraca lengan
Sarung tangan karet4
4
Sublime
Sublime
Put the mix in a thin glass flask sunk in a sand bath. Raise the fire slowly until the whole flask is hot, then bare its upper part little by little as the camphor sublimes. Too slow and the neck chokes; too fast and the flask may burst. Too cool at the top gives a snowy cake, not a clear one. Let it cool and break the flask to free the cake (ours).
Alat yang dibutuhkan:
Labu alas bulat
Penangas pasirArang
Sarung tangan las
Kacamata pengaman5
5
Press into balls
Press into balls
Crush the white cake with a few drops of alcohol, which turns it to powder. Press the powder firmly into small balls between gloved palms (ours) and keep them in a closed jar.
Alat yang dibutuhkan:
Etanol mutu laboratorium, 95 %Lumpang dan AluSarung tangan karet
Stoples Kaca6
6
Refining charge
Refining charge
Memuat notebook Jupyter…
Bahan
1- Placeholder
Alat yang Diperlukan
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