BE813065A - Alkali metal dithionites from formates - with sulphur dioxide and a basic alkali metal in 2-methoxyethanol avoiding pressure reaction - Google Patents
Alkali metal dithionites from formates - with sulphur dioxide and a basic alkali metal in 2-methoxyethanol avoiding pressure reactionInfo
- Publication number
- BE813065A BE813065A BE142652A BE142652A BE813065A BE 813065 A BE813065 A BE 813065A BE 142652 A BE142652 A BE 142652A BE 142652 A BE142652 A BE 142652A BE 813065 A BE813065 A BE 813065A
- Authority
- BE
- Belgium
- Prior art keywords
- alkali metal
- methoxyethanol
- pref
- formate
- reaction
- Prior art date
Links
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 title abstract 5
- 229910052783 alkali metal Inorganic materials 0.000 title abstract 5
- 150000001340 alkali metals Chemical class 0.000 title abstract 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title 2
- 150000004675 formic acid derivatives Chemical class 0.000 title 1
- 235000010269 sulphur dioxide Nutrition 0.000 title 1
- 239000004291 sulphur dioxide Substances 0.000 title 1
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 abstract 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 abstract 3
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 abstract 3
- 239000003513 alkali Substances 0.000 abstract 3
- 235000019253 formic acid Nutrition 0.000 abstract 3
- 239000000725 suspension Substances 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 150000001298 alcohols Chemical class 0.000 abstract 1
- -1 alkali metal formate Chemical class 0.000 abstract 1
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000012429 reaction media Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/64—Thiosulfates; Dithionites; Polythionates
- C01B17/66—Dithionites or hydrosulfites (S2O42-)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Prepn. of alkali metal dithionites from formic acid or an alkali metal formate or both, SO2 and a basic alkali metal cpd., takes place in soln. or in suspension in 2-methoxyethanol forming the anhydrous dithionite. A S cpd. forming SO2 in the reaction media may also be used. Pref. the SO2 is dissolved in 2-methoxyethanol opt. with water, partic. at 20-35%. The SO2 soln. is introduced simultaneously with a soln. or suspension of basic alkali in water, methoxyethanol or both, into a similar suspension of formate or formic acid, or the formate or formic acid may be added with the basic alkali stream into the methoxyethanol. The reaction takes place at 60-90 degrees C pref. 70-85 degrees C. The alkali formate is pref. in a 20-40% excess over SO2 and the reaction is pref. carried out in an inert atmos. Previous process using lower alcohols has required a pressure reaction; the above gives as good a result using atmospheric pressure.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1538673A GB1461785A (en) | 1973-03-30 | 1973-03-30 | Alkali metal dithionite manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE813065A true BE813065A (en) | 1974-07-15 |
Family
ID=10058245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE142652A BE813065A (en) | 1973-03-30 | 1974-03-29 | Alkali metal dithionites from formates - with sulphur dioxide and a basic alkali metal in 2-methoxyethanol avoiding pressure reaction |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE813065A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2442418A1 (en) * | 1974-09-05 | 1976-03-18 | Basf Ag | PROCESS FOR THE PRODUCTION OF SODIUM DITHIONITE |
-
1974
- 1974-03-29 BE BE142652A patent/BE813065A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2442418A1 (en) * | 1974-09-05 | 1976-03-18 | Basf Ag | PROCESS FOR THE PRODUCTION OF SODIUM DITHIONITE |
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