| Identification | More | [Name]
Methanesulfonic anhydride | [CAS]
7143-01-3 | [Synonyms]
METHANESULFONIC ANHYDRIDE
METHANESULPHONIC ANHYDRIDE
METHYLSULFONIC ANHYDRIDE
Mesyl anhydride
Methanesulfonic acid, anhydride
methanesulfonicacid,anhydride
Mesic anhydride
Methanesulfonic anhydride, 98+%
Methanesulfonicanhydride,2Msoln.indichloromethane
Methanesulphonicanhydride,98%
Methanesulfonyl anhydride
METHANESULFONIC ANHYDRIDE, 2M SOL. IN DICHLOROMETHANE
METHANE SULPHONIC ANHYDRIED
methylsulfonyl methanesulfonate
Bis(methanesulfonic)anhydride
Bismethanesulfonic anhydride | [EINECS(EC#)]
230-442-1 | [Molecular Formula]
C2H6O5S2 | [MDL Number]
MFCD00007556 | [Molecular Weight]
174.2 | [MOL File]
7143-01-3.mol |
| Chemical Properties | Back Directory | [Appearance]
white to light brown to grey powder, crystals and/ | [Melting point ]
64-67 °C (lit.) | [Boiling point ]
125 °C/4 mmHg (lit.) | [density ]
1,36 g/cm3 | [vapor density ]
3.3 (vs air)
| [refractive index ]
1.5300 (estimate) | [Fp ]
125°C/4mm | [storage temp. ]
Store at <= 20°C. | [solubility ]
Soluble in organic solvents. | [form ]
Powder, Crystals and/or Chunks | [color ]
White to light brown to gray | [Sensitive ]
Moisture Sensitive | [BRN ]
972316 | [InChIKey]
IZDROVVXIHRYMH-UHFFFAOYSA-N | [CAS DataBase Reference]
7143-01-3(CAS DataBase Reference) | [NIST Chemistry Reference]
Methanesulfonic anhydride(7143-01-3) | [EPA Substance Registry System]
7143-01-3(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
C | [Risk Statements ]
R14:Reacts violently with water.
R35:Causes severe burns. | [Safety Statements ]
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 label where possible) . | [RIDADR ]
UN 3261 8/PG 2
| [WGK Germany ]
3
| [F ]
3-10 | [TSCA ]
Yes | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
29041000 |
| Hazard Information | Back Directory | [Chemical Properties]
white to light brown to grey powder, crystals and/ | [Uses]
Methanesulfonic anhydride is used to prepare methylsulfonyl esters called as mesylates. It finds application in the reaction of aromatic alkylation. It reacts with dimethylsulfoxide to get sulfoxonium complex, which is a useful oxidizing agent. | [Preparation]
Methanesulfonic anhydride may be prepared by the dehydration of methanesulfonic acid with phosphorus pentoxide.
P2O5 + 6 CH3SO3H → 3 (CH3SO2)2O + 2 H3PO4
Methanesulfonic anhydride can be purified by distillation under vacuum (distillation of a solid) or by recrystallized from Methyl tert-butyl ether/toluene.
| [Safety]
Not only is Methanesulfonic anhydride corrosive, posing potential risks to skin, eyes, and mucous membranes, but it is also sensitive to moisture. As a hygroscopic substance, exposure to water can lead to degradation, compromising its efficacy and safety. Therefore, meticulous storage conditions are paramount to ensure the stability of the compound. To safeguard the integrity of methanesulfonic anhydride, storing it in a cool and dry environment is recommended. The storage facility should be adequately ventilated to prevent the accumulation of vapors and maintain optimal conditions for the compound. Furthermore, the storage containers must be tightly sealed to prevent moisture ingress and subsequent degradation.
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