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Methanesulfonic anhydride

Methanesulfonic anhydride structure

Methanesulfonic anhydride 

structure
  • CAS No:

    7143-01-3

  • Formula:

    C2H6O5S2

  • Chemical Name:

    Methanesulfonic anhydride

  • Synonyms:

    Methanesulfonic acid,1,1′-anhydride;Methanesulfonic anhydride;Methanesulfonic acid,anhydride;Mesyl anhydride;Methanesulfonyl anhydride;NSC 65906

  • Categories:

    Active Pharmaceutical Ingredients  >  Other Chemical Drugs

Description

white to light brown to grey powder, crystals and/

Methanesulfonic anhydride Basic Attributes

174.19600

174.20

230-442-1

65906

2904909090

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

Uses

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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