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Methanesulfonic anhydride, 98% - CAS 7143-01-3 - Formula C2H6O5S2


Certificate of Analysis

Methanesulfonic anhydride, 98%

CAS: 7143-01-3 MDL: MFCD00007556  EINECS: 230-442-1
UN#:UN3261Hazard Class:8Packing Group:II
Alternate Name: Mesic anhydride


Pricing and Availability

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Chemical Properties

Formula: C2H6O5S2  Boiling point: 125°/4mm
Formula weight: 174.20  Sensitivity: Moisture Sensitive
Melting point: 65-69° 

Literature References

More powerful sulfonylating reagent than the sulfonyl chloride, also avoiding possible displacement of sulfonate by halide. With a catalytic amount of the acid effects mesylation of deactivated aromatics such as 1,3-dichlorobenzene: Chem. Lett., 395 (1988); mesyl chloride is ineffective.

Primary and secondary alcohols may be oxidized to carbonyl compounds by sulfonic anhydrides in DMSO: J. Org. Chem., 39, 1977 (1974). For related methods, see Dimethyl­ sulfoxide, A13280.

Other References

Beilstein: 972316
UN#: UN3261
Harmonized Tariff Code:   2904.10

GHS Hazard and Precautionary Statements

Hazard Statements : H314-H318

Causes severe skin burns and eye damage. Causes serious eye damage.

Precautionary Statements : P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A

Do not breathe dust/fume/gas/mist/vapours/spray. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.


Risk & Safety

Risk Phrases: 14-34
Reacts violently with water. Causes burns.
Safety Phrases: 26-36/37/39-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).