GB849183A - A process for the removal of sulphuric acid from sulphonation products of alkyl aryls - Google Patents
A process for the removal of sulphuric acid from sulphonation products of alkyl arylsInfo
- Publication number
- GB849183A GB849183A GB2392/59A GB239259A GB849183A GB 849183 A GB849183 A GB 849183A GB 2392/59 A GB2392/59 A GB 2392/59A GB 239259 A GB239259 A GB 239259A GB 849183 A GB849183 A GB 849183A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- sulphuric acid
- ether
- sulphonic acid
- water
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/42—Separation; Purification; Stabilisation; Use of additives
- C07C303/44—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Sulphuric acid is removed from the sulphonation products of alkylated aromatic hydrocarbons by adding sodium sulphate, water and a water-immiscible ether to the product, whereby the mixture separates into two phases, one of which comprises a mixture of ether and the alkyl aryl sulphonic acid, substantially free of sulphuric acid, while the other phase comprises aqueous sodium bisulphate. The sulphonic acid, so obtained, when neutralized with alkali gives an alkyl aryl sulphonate having an inorganic salt content of less than 2% by weight. In an example, a mixture of alkyl benzene sulphonic acids, obtained by alkylating benzene with C10-C13 olefines, is sulphonated with oleum. The mixture of sulphonic acid is partly deacidified by water-washing. The washed mixture, which stlil contains about 10% by weight of sulphuric acid, is stirred with di-isopropyl ether and an aqueous solution of sodium sulphate. The mixture is allowed to separate into two layers; and the lower layer is discarded. The ethereal sulphonic acid mixture is neutralized, while cooling, by adding an aqueous sodium hydroxide solution. The ether is then distilled off; and a product is obtained which contains 1,7 per weight of sodium sulphate, based on sodium alkyl benzene sulphonate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL849183X | 1958-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB849183A true GB849183A (en) | 1960-09-21 |
Family
ID=19845290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2392/59A Expired GB849183A (en) | 1958-01-24 | 1959-01-22 | A process for the removal of sulphuric acid from sulphonation products of alkyl aryls |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB849183A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172844A (en) | 1974-03-13 | 1979-10-30 | Exxon Research & Engineering Co. | Alkylaryl sulphonic acids |
| CN105439910A (en) * | 2015-11-24 | 2016-03-30 | 浙江赞宇科技股份有限公司 | Production method for improving color of alkyl benzene sulfonic acid |
-
1959
- 1959-01-22 GB GB2392/59A patent/GB849183A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172844A (en) | 1974-03-13 | 1979-10-30 | Exxon Research & Engineering Co. | Alkylaryl sulphonic acids |
| CN105439910A (en) * | 2015-11-24 | 2016-03-30 | 浙江赞宇科技股份有限公司 | Production method for improving color of alkyl benzene sulfonic acid |
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