甲基磺酸酐
Methanesulfonic anhydride
CAS: 7143-01-3
Molecular Formula: C2H6O5S2
甲基磺酸酐 - Names and Identifiers
| Name | Methanesulfonic anhydride |
| Synonyms | 230-442-1 Mesic anhydride Mesyl anhydride METHYLSULFONIC ANHYDRIDE Methanesulfonic anhydride METHANESULFONIC ANHYDRIDE fonic acid, 1,1'-anhydride METHANESULPHONIC ANHYDRIDE methanesulfonicacid,anhydride methylsulfonyl methanesulfonate Methanesulfonic acid, anhydride |
| CAS | 7143-01-3 |
| EINECS | 230-442-1 |
| InChI | InChI=1/C2H6O5S2/c1-8(3,4)7-9(2,5)6/h1-2H3 |
| InChIKey | IZDROVVXIHRYMH-UHFFFAOYSA-N |
甲基磺酸酐 - Physico-chemical Properties
| Molecular Formula | C2H6O5S2 |
| Molar Mass | 174.19 |
| Density | 1,36 g/cm3 |
| Melting Point | 64-67 °C (lit.) |
| Boling Point | 125 °C/4 mmHg (lit.) |
| Flash Point | 125°C/4mm |
| Solubility | Soluble in organic solvents. |
| Vapor Presure | 0.00386mmHg at 25°C |
| Vapor Density | 3.3 (vs air) |
| Appearance | Powder, Crystals and/or Chunks |
| Color | White to light brown to gray |
| BRN | 972316 |
| Storage Condition | Store at <= 20°C. |
| Sensitive | Moisture Sensitive |
| Refractive Index | 1.5300 (estimate) |
| Physical and Chemical Properties | White prismatic crystals. Melting point 71 ℃, boiling point 138 ℃(1.33kPa), soluble in chloroform, benzene, hot ether. |
| Use | For Organic synthesis |
甲基磺酸酐 - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R14 - Reacts violently with water R35 - Causes severe burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3261 8/PG 2 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 3-10 |
| TSCA | Yes |
| HS Code | 29041000 |
| Hazard Class | 8 |
| Packing Group | III |
甲基磺酸酐 - 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) |
| Use | methanesulfonic anhydride is a reagent used in the synthesis of (R)-aminocarnitine, it is an inhibitor of fatty acid oxidation. for organic synthesis |
| preparation | methanesulfonic anhydride is an anhydride of methanesulfonic acid. It is useful in the preparation of the methanesulfonyl Ester, as is methanesulfonyl chloride. It is commercially available and can also be prepared in the laboratory by the reaction of phosphorus pentoxide and methanesulfonic acid at 80°C. 2 P2O5 6 CH3SO3H → 3 (CH3SO2)2O 4 H3PO4 |
| production method | mix 300g of phosphorus pentoxide with 90g of diatomaceous earth, A mixture of G of methanesulfonic acid and 10g of asbestos was added with stirring and heated at 80 ° C. For 2.5h when the reaction slowed down. The other half of the phosphorus pentoxide diatomaceous earth was then added in portions and heated for a further 3h. The reaction mixture was extracted with dichloromethane, the solvent was distilled off, and distilled under reduced pressure to collect the 105-109 ° C. (0.133kPa) fraction to obtain 193g of crude product, which was recrystallized from ether-benzene to obtain 143g of finished methanesulfonic anhydride. The yield was 55%. |
Last Update：2024-04-09 21:21:28
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