2-Sulfobenzoic anhydride
2-Sulfobenzoic acid cyclic anhydride
CAS: 81-08-3
Molecular Formula: C7H4O4S
2-Sulfobenzoic anhydride - Names and Identifiers
| Name | 2-Sulfobenzoic acid cyclic anhydride |
| Synonyms | 2-SULFOBENZOIC ANHYDRIDE 2-Sulfobenzoic Anhydride 2-SULPHOBENZOIC ANHYDRIDE 2-SULFOBENZOIC ACID ANHYDRIDE 2,1-BENZOXATHIOL-3-ONE-1,1-DIOXIDE 2-Sulfobenzoic acid cyclic anhydride 2-SULFOBENZOIC ACID CYCLIC ANHYDRIDE 3-Oxo-3H-2,1-benzoxathiole 1,1-dioxide 3H-Benzo[c][1,2]oxathiol-3-one 1,1-dioxide 1,3-DIHYDRO-2,1LAMBDA6-BENZOXATHIOLE-1,1,3-TRIONE |
| CAS | 81-08-3 |
| EINECS | 201-322-6 |
| InChI | InChI=1/C14H10O9S2/c15-13(9-5-1-3-7-11(9)24(17,18)19)23-14(16)10-6-2-4-8-12(10)25(20,21)22/h1-8H,(H,17,18,19)(H,20,21,22) |
2-Sulfobenzoic anhydride - Physico-chemical Properties
| Molecular Formula | C7H4O4S |
| Molar Mass | 184.17 |
| Density | 1.6114 (rough estimate) |
| Melting Point | 116-124°C |
| Boling Point | 184-186°C18mm Hg(lit.) |
| Flash Point | 184-186°C/18mm |
| Solubility | soluble in Toluene |
| Appearance | Crystals or Crystalline Powder |
| Color | White to beige |
| BRN | 139893 |
| Storage Condition | Store below +30°C. |
| Sensitive | Moisture Sensitive |
| Refractive Index | 1.6290 (estimate) |
| MDL | MFCD00005879 |
2-Sulfobenzoic anhydride - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R34 - Causes burns R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | 2923 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 21 |
| TSCA | Yes |
| HS Code | 29163900 |
2-Sulfobenzoic anhydride - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | 2-sulfobenzoic anhydride is an anhydride derivative, which can be used in the field of pharmaceutical and chemical industry. |
| Application | 2-sulfobenzoic anhydride application examples are as follows: 1, the preparation of flame retardant, light resistant waterborne polyurethane coatings, preparation of a kind of preparation of carbon nanotubes graphene modified waterborne polyurethane coating and adhesive. |
| preparation | 2-sulfobenzoic anhydride was prepared as follows: under N2 protection, add 9.0g saccharin solid and 13ml concentrated sulfuric acid (concentration 98%) in 50ml three-necked flask, stir the reaction at 140 ℃ for 2H, cool to room temperature, precipitate a large amount of solid in the reaction mixture, filter, the solid obtained by filtration was washed with ice water and dried to obtain 7.3g of 2-sulfobenzoic anhydride as a white solid in a yield of 81%. |
Last Update：2024-04-09 02:00:12
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