UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Acetone by Dry Distillation of Acetate of Lime
Before the cumene process, acetone was made from "acetate of lime", calcium acetate. Limestone (calcium carbonate) soaked in vinegar gives calcium acetate; when the dry salt is heated it breaks down into calcium carbonate and acetone: Ca(CH₃COO)₂ → CaCO₃ + (CH₃)₂CO. Charles Friedel reported this dry distillation in 1858, and until World War I it was the main commercial way to make acetone. The calcium carbonate is left behind in the retort and the acetone distils over.
Hagati
2–3 days
Amabwiriza
1
1
Make calcium acetate
Make calcium acetate
Soak crushed limestone in vinegar. The acetic acid dissolves the calcium carbonate as calcium acetate.
Ibikoresho by'iyi ntambwe:
Karubonate ya Kalisiyumu - Ibuye Ry'Isarabwayi Rimenaguritse1 as required
Inkarabyo1 as requiredIbikoresho bikenewe:
Ikigega cyo kugwisha2
2
Dry the salt
Dry the salt
Draw off the solution and evaporate the water to leave dry calcium acetate.
Ibikoresho bikenewe:
Igikoresho cyuka amazi3
3
Dry-distil
Dry-distil
Heat the dry calcium acetate in a closed retort. It decomposes into calcium carbonate, which stays behind, and acetone, which comes off as vapour; condense it.
Ibikoresho bikenewe:
Icyuma cyo kubira
Umuzingo w'ikondanseriIbikoresho
2- Umwanya
- 1 as requiredUmwanya
Ibikoresho bikenewe
4- Umwanya
- Umwanya
- Umwanya
- Umwanya
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