Reaktion #570152
ord-a76a9e7bad3d40479e682b9c4056a987
Reaktionsgleichung
thiamine hydrochloride
sodium menadione bisulfite
→
Menadione bisulfite thiamine
Reagenzien
Keine
Lösungsmittel
Reaktionsbedingungen
Detaillierte Bedingungen
See reaction.notes.procedure_details.
Aufarbeitung
- 1workup.ADDITIONwas added within about half an hour
- 2workup.WAITAfter half an hour of agitation
- 3Sonstigeto precipitate
- 4workup.WAITAfter an hour
- 5Filtrationthe precipitate was filtered
- 6Waschenwashed
- 7Sonstigedried
- 8Sonstigewas obtained
Vorschrift
25 g of thiamine hydrochloride (vitamin B1) was dissolved in 50 g of water; to said solution of 25 g of powdery sodium menadione bisulfite was added within about half an hour. After half an hour of agitation, the reaction mass became opalescent and the adduct began to precipitate. After an hour, the precipitate was filtered, washed and dried. 25 g of a white product having the following analysis was obtained.