sodium benzaldehyde-o-sulfonate
- CAS No.
- 91-25-8
- Chemical Name:
- sodium benzaldehyde-o-sulfonate
- Synonyms
- o-Sulfobenzaldehyde;Benzaldehyde-o-sulfonic acid;Benzenesulfonic acid, 2-formyl-;sodium benzaldehyde-o-sulfonate;2-methanoylbenzenesulfonic acid
- CBNumber:
- CB3875791
- Molecular Formula:
- C7H6O4S
- Molecular Weight:
- 186.19
- MOL File:
- 91-25-8.mol
- Modify Date:
- 2023/5/15 10:43:54
| Density | 1.503±0.06 g/cm3(Predicted) |
|---|---|
| solubility | DMSO (Slightly), Water (Slightly) |
| form | Solid |
| pka | -0.97±0.18(Predicted) |
| color | White to Off-White |
| Stability | Hygroscopic |
| EPA Substance Registry System | Benzenesulfonic acid, 2-formyl- (91-25-8) |
sodium benzaldehyde-o-sulfonate Chemical Properties,Uses,Production
Chemical Properties
Acquires a deep reddish-violet color if Schiff' s reagent is added. In contrast to the poorly soluble barium salt, the sodium salt is freely soluble in water; it is also freely soluble in hot, but not in cold, ethyl alcohol.
Application
2-Formylbenzenesulfonic acid（sodium benzaldehyde-o-sulfonate) is an intermediate in the manufacture of optical brighteners, trade names including Uvitex NFW (for textiles) and Tinopal CBS (for detergents). Triphenylmethane dyes are produced by condensation of the acid with various N,N-dialkylani- lines, N,N-dialkyl-m-aminophenols, and their sulfonic acids.
Production Methods
The starting material is o-chlorobenzaldehyde, which is heated with sodium hydrogensulfite solution in an autoclave to 190 – 200 ℃,with the result that its chloro substituent is replaced by the sulfonic acid group. The batch is allowed to cool, sulfuric acid is added, and excess sulfur dioxide and unconverted chlorobenzaldehyde are driven off by boiling. The resulting solution is used directly in the manufacture of dyes. Sodium benzaldehyde-o-sulfonate can also be produced by oxidation of o-toluenesulfonic acid with oxygen in the presence of bromine and cobalt as catalysts.
sodium benzaldehyde-o-sulfonate Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6351 | 58 | Inquiry |
| Weifang Wehibest Supply Chain Co.,Ltd | +8613583620690 | China | 926 | 58 | Inquiry |
| Shaanxi DIDU pharmaceutical and Chemical Co., Ltd | 15229059051 | China | 9968 | 58 | Inquiry |
| Daily Centre Limited | 852 27950571 | China | 335 | 34 | Inquiry |
| Dynasty Colourants Co., Ltd. | 86 0574 27862107 27862719 | China | 3306 | 51 | Inquiry |
| Service Chemical Inc. | 888-895-6920 | Germany | 6373 | 71 | Inquiry |
| J & K SCIENTIFIC LTD. | 010-82848833 400-666-7788 | China | 96815 | 76 | Inquiry |
| Shenzhen Polymeri Biochemical Technology Co., Ltd. | +86-400-002-6226 13028896684 | China | 56070 | 58 | Inquiry |