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Subcarbonate of Iron: Iron Sulfate and Soda Crystals, USP 1860
Mix a solution of iron sulfate with one of washing soda and a reddish-brown powder settles out: the "precipitated carbonate of iron" of the 1860 US Pharmacopoeia. Washed and dried without heat, it is the starting point for reduced iron.
Source: United States Pharmacopoeia, 4th decennial revision (1860, publ. 1863), Ferri Subcarbonas. The metric figures are our conversions. Picture drawn by Youblob.
Olùbẹ̀rẹ̀
2 days
Ìlànà
1
1
Dissolve the two salts
Dissolve the two salts
Dissolve 8 troy ounces (249 g) of iron sulfate in 4 pints (1.9 L) of water. Separately, dissolve 9 troy ounces (280 g) of carbonate of soda crystals in another 4 pints.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ferrous sulfate249 g
Sódà ìfọ̀280 g
Omi3.8 lítàÀwọn irinṣẹ́ tí a nílò:
Òǹwọ̀n ìdọ́gba
Ohun èlò dígí
Ọ̀pá Ìrúwé Gílásì2
2
Mix and let it settle
Mix and let it settle
Pour the two solutions together, stir, and set it aside until the precipitate has settled.
Àwọn irinṣẹ́ tí a nílò:
Ohun èlò dígíỌ̀pá Ìrúwé Gílásì3
3
Wash
Wash
Pour off the clear liquid. Wash the precipitate with water, settling and pouring off each time, until the washings pass nearly tasteless.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Omi1 as requiredÀwọn irinṣẹ́ tí a nílò:
Ohun èlò dígíỌ̀pá Ìrúwé Gílásì4
4
Dry without heat
Dry without heat
Dry it on blotting paper without heat. The result is a reddish-brown powder that dissolves in dilute hydrochloric acid with slight effervescence.
Àwọn irinṣẹ́ tí a nílò:
Ìwé ìfàmu funfunÀwọn irinṣẹ́ tó nílò
4Ìtọ́nisọ́nà yìí ń ṣe
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