2-Sulfobenzoic anhydride
- CAS No.
- 81-08-3
- Chemical Name:
- 2-Sulfobenzoic anhydride
- Synonyms
- 1,1-dioxo-2,1;2-Sulfobenzoic anhyd;SULFOBENZOIC ANHYDRIDE;2-SULFOBENZOIC ANHYDRIDE;O-SULFOBENZOIC ANHYDRIDE;2-SULPHOBENZOIC ANHYDRIDE;2-SulfobenzoicAnhydride>2-SULFOBENZOIC ACID ANHYDRIDE;o-Sulfobenzoic acid anhydride;2-Sulfobenzoic Acid Anhydrade
- CBNumber:
- CB4286815
- Molecular Formula:
- C7H4O4S
- Molecular Weight:
- 184.17
- MOL File:
- 81-08-3.mol
- MSDS File:
- SDS
- Modify Date:
- 2023/4/23 13:52:06
| Melting point | 116-124 °C |
|---|---|
| Boiling point | 184-186 °C18 mm Hg(lit.) |
| Density | 1.6114 (rough estimate) |
| refractive index | 1.6290 (estimate) |
| Flash point | 184-186°C/18mm |
| storage temp. | Store below +30°C. |
| solubility | soluble in Toluene |
| form | Crystals or Crystalline Powder |
| color | White to beige |
| Sensitive | Moisture Sensitive |
| BRN | 139893 |
| CAS DataBase Reference | 81-08-3(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Sulfobenzoic acid cyclic anhydride(81-08-3) |
| EPA Substance Registry System | 3H-2,1-Benzoxathiol-3-one, 1,1-dioxide (81-08-3) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a | |||||||||
| Hazard Codes | C | |||||||||
| Risk Statements | 34-20/21/22 | |||||||||
| Safety Statements | 22-24/25-45-36/37/39-26 | |||||||||
| RIDADR | 2923 | |||||||||
| WGK Germany | 3 | |||||||||
| F | 21 | |||||||||
| TSCA | Yes | |||||||||
| HS Code | 29163900 | |||||||||
| NFPA 704 |
|
2-Sulfobenzoic anhydride price More Price(6)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| TCI Chemicals (India) | S0124 | 2-Sulfobenzoic Anhydride | 81-08-3 | 25G | ₹5300 | 2022-05-26 | Buy |
| ALFA India | ALF-A13314-36 | 2-Sulfobenzoic anhydride, 94% | 81-08-3 | 500g | ₹30649 | 2022-05-26 | Buy |
| TCI Chemicals (India) | S0124 | 2-Sulfobenzoic Anhydride | 81-08-3 | 100G | ₹12800 | 2022-05-26 | Buy |
| ALFA India | ALF-A13314-22 | 2-Sulfobenzoic anhydride, 94% | 81-08-3 | 100g | ₹15849 | 2022-05-26 | Buy |
| ALFA India | ALF-A13314-14 | 2-Sulfobenzoic anhydride, 94% | 81-08-3 | 25g | ₹5387 | 2022-05-26 | Buy |
2-Sulfobenzoic anhydride Chemical Properties,Uses,Production
Chemical Properties
White to beige crystals or crystalline powder
Uses
Polymerization inhibitor.
Purification Methods
The anhydride is purified by distillation in a vacuum and readily solidifies to a crystalline mass on cooling. [Heitman J Am Chem Soc 34 1594 1912.] Alternatively purify it by dissolving it in the minimum volume of toluene and refluxing for 2hours using a Dean-Stark trap. Evaporate under reduced pressure and distil the anhydride at 18mm. It is then recrystallised three times from its own weight of dry *C6H6. It is sensitive to moisture and should be stored in the dark in a dry atmosphere. The O-methyloxime has m 110-112o [Levy Tetrahedron Lett 3289 1972]. If the sample has hydrolysed extensively (presence of OH band in the IR) then treat with an equal bulk of SOCl2, reflux it for 3hours (CaCl2 tube), evaporate and distil the residue in a vacuum, then recrystallise it from *C6H6, Et2O/*C6H6 or CHCl3 (EtOH free by passing through Al2O3, or standing over CaCl2). [Clarke & Dreger Org Synth Coll Vol I 495 1941.] It is used for modifying -amino functions of lysyl residues in proteins [Bagree et al. FEBS Lett 120 275 1980]. [Beilstein 19 I 659, 19 II 137, 19 III/IV 1641, 19/4 V 215.]
2-Sulfobenzoic anhydride Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6351 | 58 | Inquiry |
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6124 | 58 | Inquiry |
| TCI Chemicals (India) Pvt. Ltd. | 1800 425 7889 | New Delhi, India | 6778 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6913 | 58 | Inquiry |
| Salvi Chemical Industries Limited | 08048372575Ext 732 | Mumbai, India | 10 | 58 | Inquiry |
| TSK Lifesciences | 91-9397306789 | Hyderabad, India | 246 | 58 | Inquiry |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | China | 21667 | 55 | Inquiry |
| Shanghai Longyu Biotechnology Co., Ltd. | +8619521488211 | China | 2534 | 58 | Inquiry |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | China | 34571 | 58 | Inquiry |
| ANHUI WITOP BIOTECH CO., LTD | +8615255079626 | China | 23556 | 58 | Inquiry |