Dithionite → HCID 18321164, compound
Reaction equation
S(S([O-])=O)([O-])=[O:2].[Na+:7].[Na+].S([O-])([O-])(=[O:11])=S.[Na+].[Na+].S([O-])([O-])=O.[Na+].[Na+].S(=O)(O)[O-].[Na+].[S:27]([S:30]([O-:32])=[O:31])([O-:29])=[O:28]>>[OH2:2].[OH2:11].[S:27]([S:30]([O-:32])=[O:31])([O-:29])=[O:28].[Na+:7].[Na+:7]Participants
6
Procedure
The process of EXAMPLE 1 was run continuously with a sodium hydrosulfite solution feed containing 144.8 g/l of Na2S2O4, 11.6 g/l of sodium thiosulfate, 23.8 g/l of sodium sulfite, and 81.1 g/l of sodium bisulfite. The hydrosulfite solution was fed at a rate of 12 gallons per minute to the crystallizer of EXAMPLE 1 to produce a slurry of sodium hydrosulfite dihydrate crystals which was continuously fed to the hydrocyclone series. Product sized crystals were continuously conveyed to the centrifuge at a rate of 1.4 gallons per minute. After dissolving the crystalline cake recovered from the centrifuge, a product solution containing 130.4 g/l of sodium hydrosulfite, and 4.1 g/l of sodium thiosulfate was continuously recovered.
Sources & evidence
- ORD record
- ord-7249b51633c246aaa9d390351c845748
- Source dataset
- uspto-grants-1986_05
- Patent number
- US04590058
Reaction notes
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