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ÀWỌN OHUN WÍWỌ̀
Ferric Ammonium Citrate: Ferric Hydroxide Dissolved in Citric Acid and Ammonia
Iron and ammonium citrate is the light-sensitive salt of the blueprint (cyanotype). The British Pharmacopoeia formula (US Dispensatory, 1907): throw down ferric hydroxide from ferric sulphate with ammonia, wash it, dissolve it in warm citric acid, add ammonia, and dry the syrup in thin layers below 38 °C to garnet-red scales. Keep it from light.
The picture: ferric ammonium citrate (Wikimedia Commons).
Àárín
2 days
Ìlànà
1
1
Make 10 % ammonia water
Make 10 % ammonia water
Mix 2 parts of strong ammonia (25-28 %) with 3 parts of water to get about 10 %. You need about 460 ml.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Omi amonia - 25-28 %190 mlÀwọn irinṣẹ́ tí a nílò:
Omi Àyọ́
Ago Bórósílíkéètì
Ìbọ̀wọ́ rọ́bà2
2
Throw down ferric hydroxide
Throw down ferric hydroxide
Mix 320 ml of the ammonia water with 800 ml of distilled water. Dilute 200 ml of ferric sulphate solution with 800 ml of distilled water and add it slowly, stirring briskly, until the mix smells faintly of ammonia. Leave 2 hours, stirring now and then.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Omi Ferric Sulphate200 mlÀwọn irinṣẹ́ tí a nílò:
Omi Àyọ́Ago Bórósílíkéètì
Ọ̀pá Ìrúwé Gílásì3
3
Filter and wash
Filter and wash
Pour onto a calico filter. When drained, wash the brown ferric hydroxide with distilled water until the washings are free of sulphate.
Àwọn irinṣẹ́ tí a nílò:
Aṣọ òwú ńlá ìsẹ́Omi Àyọ́4
4
Dissolve in citric acid
Dissolve in citric acid
Dissolve 80 g of citric acid in 80 g of distilled water and warm it on a water bath. Stir in the drained hydroxide until nearly all of it has dissolved and the acid is saturated.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Asíìdì sítírìkì80 gÀwọn irinṣẹ́ tí a nílò:
Omi Àyọ́
Ìkòkò ńlá (ti ìsàlẹ̀, fún ìwẹ̀ omi)Ago BórósílíkéètìỌ̀pá Ìrúwé Gílásì
Òǹwọ̀n ìdọ́gba5
5
Add ammonia and filter
Add ammonia and filter
Let it cool, add 110 ml of the ammonia water and filter through flannel, adding a little distilled water if needed.
Àwọn irinṣẹ́ tí a nílò:
Aṣọ Flannel Irun ÀgùntànOmi Àyọ́6
6
Dry to scales
Dry to scales
Evaporate to a syrup, keeping a very slight smell of ammonia. Spread thinly on glass plates and dry below 37.8 °C (100 °F). Lift off the flakes and keep them in a dark, closed jar.
Àwọn irinṣẹ́ tí a nílò:
Àwo ÌgbẹÌkòkò ńlá (ti ìsàlẹ̀, fún ìwẹ̀ omi)
Àwo dígí
Ẹ̀rọ Ìwọ̀n Ooru
Ìgò Gíláàsì Dúdú Onídìí Tí Kò Jẹ́ Afẹ́fẹ́ KọjáÀwọn ohun-èlò
3- 190 mlÀyè
- 200 mlÀyè
- 80 gÀyè
Àwọn irinṣẹ́ tó nílò
12- Àyè
- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
Blueprint tó jọra
Àwọn blueprint wọ̀nyí pín ìmọ̀ — ọ̀nà, ohun-èlò tàbí ìlànà
CC0 Àgbègbè Gbogbogbò
Blueprint yìí ti jáde lábẹ́ CC0. O lè ṣe àdàkọ, yí padà, pín, àti lò láìsí ìyọ̀ǹda.
Ṣàtìlẹ́yìn Olùṣẹ́dá nípa rírà àwọn ọjà nipasẹ̀ Blueprint wọn Ẹ̀san Olùṣẹ́dá tí àwọn Olùtajà gbé kalẹ̀, tàbí ṣẹ̀dá àtúnṣe tuntun ti Blueprint yìí kí o sì fi sínú Blueprint rẹ gẹ́gẹ́ bí ìsopọ̀ láti pín owó-wíwọlé.