JPS6456316A - Production of sodium carbonate heptahydrate - Google Patents
Production of sodium carbonate heptahydrateInfo
- Publication number
- JPS6456316A JPS6456316A JP21303487A JP21303487A JPS6456316A JP S6456316 A JPS6456316 A JP S6456316A JP 21303487 A JP21303487 A JP 21303487A JP 21303487 A JP21303487 A JP 21303487A JP S6456316 A JPS6456316 A JP S6456316A
- Authority
- JP
- Japan
- Prior art keywords
- sodium carbonate
- heptahydrate
- obtd
- targeted
- satd
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PURPOSE:To advantageously produce sodium carbonate heptahydrate having excellent productivity in an industrial scale, by dehydrating and concentrating a satd. soln. of sodium carbonate at a specified temp. under reduced pressure to deposit crystals. CONSTITUTION:The targeted sodium carbonate heptahydrate is obtd. by dehydrating and concentrating the satd. soln. of sodium carbonate in the temp. range of 32.0-35.4 deg.C under reduced pressure to deposit crystals. The targeted sodium carbonate heptahydrate also can be obtd. by drying crystal of sodium carbonate plus its hydrate at <=30 deg.C to the content of water of crystallization equiv. to sodium carbonate heptahydrate. Further, the targeted sodium carbonate heptahydrate also can be obtd. by uniformly mixing anhydrous sodium carbonate with water in the equiv. amt. of seven times mol. and by stirring until crystallization proceeds to solidify. The sodium carbonate raw material used is usually placed on the market as anhydrous sodium carbonate (soda ash), but monohydrate sodium carbonate and sodium carbonate plus its hydrate also can be used as raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21303487A JPS6456316A (en) | 1987-08-28 | 1987-08-28 | Production of sodium carbonate heptahydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21303487A JPS6456316A (en) | 1987-08-28 | 1987-08-28 | Production of sodium carbonate heptahydrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6456316A true JPS6456316A (en) | 1989-03-03 |
Family
ID=16632415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21303487A Pending JPS6456316A (en) | 1987-08-28 | 1987-08-28 | Production of sodium carbonate heptahydrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6456316A (en) |
-
1987
- 1987-08-28 JP JP21303487A patent/JPS6456316A/en active Pending
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