Methansulfonsureanhydrid

Methanesulfonic anhydride

HCID 81560CAS 7143-01-3

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Grundinformationen

Standard-SMILES: CS(=O)(=O)OS(C)(=O)=O
InChIKey: IZDROVVXIHRYMH-UHFFFAOYSA-N
Summenformel: C2H6O5S2
Durchschnittliche Molmasse: 174,2 g/mol
Monoisotopische Masse: 173,96566529

Namen und Bezeichner

Bevorzugter Name: Methanesulfonic anhydride
IUPAC: methylsulfonyl methanesulfonate
Lokaler Name: Methansulfonsureanhydrid
Englischer Name: Methanesulfonic anhydride
Summenformel: C2H6O5S2
Molmasse: 174.19

Namen und Synonyme

Methanesulfonic anhydrideMethanesulphonic anhydridemethanesulfonyl methanesulfonateMethanesulfonic acid, 1,1'-anhydrideJ492U7J4PBNSC-65906DTXSID70864010EINECS 230-442-1NSC 65906RefChem:156942DTXCID80812567IZDROVVXIHRYMH-UHFFFAOYSA-N

Weitere Namen anzeigen

7143/1/3Methanesulfonyl anhydrideSKL265

7143-01-3methylsulfonyl methanesulfonateMethanesulfonic acid, anhydrideMesyl anhydrideMFCD00007556Mesic anhydridemethanesulfonicanhydridemethylsulfonic anhydride

Datenbank-Bezeichner

CAS: 7143-01-3
PubChem CID: 81560
DTXSID: DTXSID70864010
UNII: J492U7J4PB
EC Number: 230-442-1
Nikkaji: J24.127J

Eigenschaften

Berechnete Struktureigenschaften

XLogP: -0,8
Polarare Oberfläche (TPSA): 94,3 Å²
H-Brücken-Donoren: 0
H-Brücken-Akzeptoren: 5
Frei drehbare Bindungen: 2
Schwere Atome: 9
Formalladung: 0
Komplexität: 227

Physikochemische Eigenschaften

Schmelzpunkt: 64 · 64-67 °C (lit.)
Siedepunkt: 125 °C/4 · 125 °C/4 mmHg (lit.)
Dichte: 1 · 1,36 g/cm3
Dampfdichte: 3.3 · 3.3 (vs air)
Brechungsindex: 1.53 · 1.5300 (estimate)
Flammpunkt: 125 °C/4mm · 125°C/4mm
storage temp.: 20 °C · Store at <= 20°C.
Löslichkeit: Soluble in organic solvents.
Aggregatzustand: Powder, Crystals and/or Chunks
Farbe: White to light brown to gray
BRN: 972316 · 972316
InChI: 1S/C2H6O5S2/c1-8(3,4)7-9(2,5)6/h1-2H3
InChIKey: IZDROVVXIHRYMH-UHFFFAOYSA-N
SMILES: CS(=O)(=O)OS(C)(=O)=O
CAS Datenbank: 7143 · 7143-01-3(CAS DataBase Reference)
NIST chemische Informationen: Methanesulfonic anhydride(7143-01-3)
EPA chemische Informationen: Methanesulfonic acid, anhydride (7143-01-3)

Sicherheit und Regulatorisches

GHS-Klassifizierung

GHS Classification · 4 Einträge

Danger

H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

P260, P264, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 64 reports by companies from 9 notifications to the ECHA C&L Inventory.

Gefahrenhinweise

Regulatory Information · 3 Einträge

Chemical: Methanesulfonic acid, anhydride

Status: Active Update: 30-05-2018 https://echa.europa.eu/registration-dossier/-/registered-dossier/19506

Methanesulphonic anhydride: Does not have an individual approval but may be used under an appropriate group standard

Hazard Classes and CategoriesSkin Corr. 1 (100%)

Sicherheitsdaten

F: 3-10
wgk: 3
tsca: TSCA listed
ridadr: UN 3261 8/PG 2
hs_code: 29041000
risk_code: 14-35
hazard_code: C
safety_code: 26-36/37/39-45
hazard_class: 8
packing_group: III
Speicherklasse: 8A - Combustible corrosive hazardous materials
Hazard Classifications: Skin Corr. 1A

Chemie und Industrie

Verwendung und Herstellung

General Manufacturing InformationMethanesulfonic acid, 1,1'-anhydride: ACTIVE

Anwendungen · 1 Eintrag

VerwendenMethanesulfonic 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.

Darstellung · 1 Eintrag

synthetischeMethanesulfonic anhydride may be prepared by the dehydration of methanesulfonic acid with phosphorus pentoxide.P2O5 + 6 CH3SO3H → 3 (CH3SO2)2O + 2 H3PO4Methanesulfonic anhydride can be purified by distillation under vacuum (distillation of a solid) or by recrystallized from Methyl tert-butyl ether/toluene.