Sulfur Dioxide → Potassium Metabisulfite

HRID 230998

반응식

HRID 230998 반응식
[OH-].[K+:2].C(=O)([O-])[O-].[S:7](=[O:9])=[O:8].[S:10](=[O:13])([OH:12])[O-:11].[K+]>>[S:10]([S:7]([O-:9])=[O:8])([O-:12])(=[O:11])=[O:13].[K+:2].[K+:2]

참가 물질

5

반응물 4

HCID 1119Sulfur Dioxide2회HCID 14797Potassium HydroxideHCID 19660Carbonate IonHCID 23663620Potassium Bisulfite

생성물 1

HCID 28019Potassium Metabisulfite

실험 절차

In U.S. Pat. No. 3,369,866, potassium hydroxide or carbonate and sulfur dioxide are reacted in potassium bisulfite solution at a pH of 4 to 7.5, and a temperature of 50° to 80° C. The solution is transferred to a second vessel where its pH is reduced to 5.5 by the addition of more sulfur dioxide in order to prevent precipitation of potassium sulfite, and the solution is cooled to 15° to 25° C. to obtain a crop of potassium metabisulfite crystals. The main concerns are to avoid product oxidation and the inclusion of sulfite in the product. No mention is made of crystal size.

후처리

  1. customa temperature of 50° to 80° C
  2. customThe solution is transferred to a second vessel
  3. customprecipitation of potassium sulfite
  4. temperaturethe solution is cooled to 15° to 25° C.

출처 및 근거

ORD 기록
ord-4943746cd2c242999c6bb207fbda0671
출처 데이터셋
uspto-grants-1989_07
특허 번호
US04844880

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