Methanesulfonic anhydride
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Methanesulfonic anhydride
structure -
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CAS No:
7143-01-3
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Formula:
C2H6O5S2
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Chemical Name:
Methanesulfonic anhydride
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Synonyms:
Methanesulfonic acid,1,1′-anhydride;Methanesulfonic anhydride;Methanesulfonic acid,anhydride;Mesyl anhydride;Methanesulfonyl anhydride;NSC 65906
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CAS No:
Characteristics
94.27000
-0.8
off-white crystals
1.583 g/cm3
63-63.5 °C
105-109 °C @ Press: 1 Torr
128.7ºC
1.469
3.3 (vs air)
Safety Information
III
8
UN 3261
3
R14; R35
S26-S36/37/39-S45
C
P280-P305 + P351 + P338-P310
H314
|Danger|H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]|P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, and P501|Aggregated GHS information provided by 62 companies from 8 notifications to the ECHA C&L Inventory.
Methanesulfonic anhydride Use and Manufacturing
Methanesulfonic anhydride is the acid anhydride of methanesulfonic acid. Like methanesulfonyl chloride, it may be used to generate mesylates (methanesulfonyl esters). It is commercially available but may also be prepared by the reaction of phosphorus pentoxide with methanesulfonic acid at 80°C.2 P2O5 + 6 CH3SO3H → 3 (CH3SO2)2O + 4 H3PO4
Methanesulfonic acid, 1,1'-anhydride: ACTIVE
Computed Properties
Molecular Weight:174.20
XLogP3:-0.8
Hydrogen Bond Acceptor Count:5
Rotatable Bond Count:2
Exact Mass:173.96566563
Monoisotopic Mass:173.96566563
Topological Polar Surface Area:94.3
Heavy Atom Count:9
Complexity:227
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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