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MICHEZO
TEKNOLOJIA
VAZI
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).
Kati
2 days
Maagizo
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.
Vifaa kwa hatua hii:
Myeyusho wa amonia - asilimia 25-28190 mlZana zinazohitajika:
Maji yaliyosafishwa kwa mvuke
Bikari ya Borosilikati
Glavu za mpira2
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.
Vifaa kwa hatua hii:
Mmumunyo wa Salfeti ya Feri200 mlZana zinazohitajika:
Maji yaliyosafishwa kwa mvukeBikari ya Borosilikati
Fimbo ya Kioo ya Kukoroga3
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.
Zana zinazohitajika:
Kitambaa kikubwa cha pamba cha kuchujaMaji yaliyosafishwa kwa mvuke4
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.
Vifaa kwa hatua hii:
Asidi ya limao80 gZana zinazohitajika:
Maji yaliyosafishwa kwa mvuke
Sufuria kubwa (ya chini, kwa maji ya moto)Bikari ya BorosilikatiFimbo ya Kioo ya Kukoroga
Mizani ya mizani-mbili5
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.
Zana zinazohitajika:
Flaneli ya Sufu (ya kuchuja)Maji yaliyosafishwa kwa mvuke6
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.
Zana zinazohitajika:
Sahani ya KuvukiziaSufuria kubwa (ya chini, kwa maji ya moto)
Bamba la kioo
Kipimajoto
Vyungu vya Kioo Cheusi vyenye Mifuniko Isiyopitisha HewaVifaa
3- Kishikilia Nafasi
- Kishikilia Nafasi
- 80 gKishikilia Nafasi
Zana Zinazohitajika
12- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
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