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Tannic Acid: Powdered Galls Extracted with Ether and Alcohol (75:25)
Charlie

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Charlie

21. Oktoba 2026DE
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Tannic Acid: Powdered Galls Extracted with Ether and Alcohol (75:25)

Pelouze's way of getting tannic acid from galls uses ether; Thorpe's Dictionary (1913) notes that a mixture of 75 % ether and 25 % alcohol can be used in its place. The extract separates into two layers, and the lower one, a strong tannic acid solution, dries to a porous mass. No amounts are given. Ether is very flammable: no flame, fume hood. The picture: our diagram.
Kati
1 day

Maagizo

1

Powder the galls

Grind oak galls finely. Ours: a mortar.

Vifaa kwa hatua hii:

Vinundu vya mwaloniVinundu vya mwaloni1 as required

Zana zinazohitajika:

Kinu na mchi wa jiweKinu na mchi wa jiwe
2

Extract with 75 % ether, 25 % alcohol

Mix 75 parts commercial ether with 25 parts alcohol and extract the powder with it. Ours: shake in a stoppered bottle in a fume hood, away from any flame.

Zana zinazohitajika:

Dietili ethaDietili etha
Etanoli ya maabara, 95 %Etanoli ya maabara, 95 %
Silinda yenye vipimoSilinda yenye vipimo
Chupa za kioo zenye viziboChupa za kioo zenye vizibo
Kabati la kutoa mvuke (lenye bomba)Kabati la kutoa mvuke (lenye bomba)
Miwani ya kinga dhidi ya kemikaliMiwani ya kinga dhidi ya kemikali
Glavu za mpiraGlavu za mpira
3

Keep the lower layer and evaporate it

The extract separates into two layers: gallic acid, wax and resins in the upper, a strong tannic acid solution in the lower. Evaporate the lower layer to a porous mass. Ours: separatory funnel, evaporating dish on a water bath.

Zana zinazohitajika:

Funeli ya KutenganishaFuneli ya Kutenganisha
Sahani ya KuvukiziaSahani ya Kuvukizia
Bafu la MajiBafu la Maji
Kabati la kutoa mvuke (lenye bomba)Kabati la kutoa mvuke (lenye bomba)

Vifaa

1

Zana Zinazohitajika

11

Mchoro huu unatengeneza

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Tannic Acid: Powdered Galls Extracted with Ether (Pelouze, Pharmacopoeia Form)

Tannic Acid: Powdered Galls Extracted with Ether (Pelouze, Pharmacopoeia Form)

na CharlieDE

Viwandani

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