methanesulfonic acid

• ChemBase ID: 107832
• Molecular Formular: CH4O3S
• Molecular Mass: 96.10566
• Monoisotopic Mass: 95.98811499
• SMILES: CS(=O)(=O)O
• Canonical SMILES: CS(=O)(=O)O
• InChI: InChI=1S/CH4O3S/c1-5(2,3)4/h1H3,(H,2,3,4)
• InChIKey: AFVFQIVMOAPDHO-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: methanesulfonic acid
• IUPAC Traditional name: mesylate; methanesulfonic acid
• Synonyms: Methanesulfonic acid solution; Methanesulfonic acid solution; Methanesulfonic acid concentrate; METHANESULFONIC ACID, 70% SOLUTION; Methylsulfonic acid; MSA; Methanesulfonic acid; Methanesulfonic acid; Mesic acid; 甲烷磺酸 溶液; 甲基磺酸; 甲磺酸

Database IDs

• CAS Number: 75-75-2
• EC Number: 200-898-6; 231-791-2
• MDL Number: MFCD00007518
• Beilstein Number: 1446024
• Merck Index: 145954
• PubChem SID: 24896907; 24850732; 24870724; 24879176; 24870726; 162095461; 24890163; 24873902
• PubChem CID: 6395
• CHEBI ID: 27376
• Chemspider ID: 6155
• Unique Ingredient Identifier: 12EH9M7279
• Wikipedia Title: Methanesulfonic_acid

CALCULATED PROPERTIES

• Acid pKa: -1.6106497
• H Acceptors: 3
• H Donor: 1
• LogD (pH = 5.5): -3.3367643
• LogD (pH = 7.4): -3.3367722
• Log P: -0.9603736
• Molar Refractivity: 16.5315 cm^3
• Polarizability: 7.422034 Å^3
• Polar Surface Area: 54.37 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Apperance: brown
• Melting Point: 17-19 °C(lit.); 17–19 °C; 19-20°C; 20°C
• Boiling Point: 166-168°C/10mm; 167 °C/10 mmHg(lit.); 167 °C /10 mmHg, 122 °C/1 mmHg
• Flash Point: >110°C(230°F); 156°C(312°F); 170 °C; 189 °C; 338 °F; 372.2 °F
• Density: 1.039 g/mL at 20 °C; 1.319 g/mL at 25 °C; 1.320; 1.475-1.485 g/mL at 20 °C; 1.48 g/cm^3; 1.481; 1.481 g/mL at 25 °C(lit.)
• Refractive Index: 1.4150; 1.4300; n20/D 1.415; n20/D 1.416; n20/D 1.429; n20/D 1.429(lit.)
• Vapor Pressure: <1 mmHg ( 20 °C); 1 mmHg ( 20 °C)
• Vapor Density: 3.3 (vs air)
• Absorption Wavelength: λ: 210 nm Amax: ≤0.2; λ: 220 nm Amax: ≤0.15; λ: 230 nm Amax: ≤0.10; λ: 240 nm Amax: 0.02; λ: 240-320 nm Amax: <0.4; λ: 250 nm Amax: 0.01; λ: 260 nm Amax: ≤0.05; λ: 260 nm Amax: 0.01; λ: 500 nm Amax: ≤0.05
• pKa: -1.9

Safety Information

• Storage Warning: Light Sensitive & Hygroscopic
• RTECS: PB1140000
• European Hazard Symbols: Corrosive (C)
• UN Number: 2586; 2922; 3265; UN2586
• German water hazard class: 1; 2; nwg
• Hazard Class: 8
• Packing Group: 2; 3; III
• Risk Statements: 21/22-34; 21/22-35; 34; R:34
• Safety Statements: 20-23-26-36/37/39-45-60; 26-36/37/39-45; 26-36-45; S:26-36-45
• TSCA Listed: 是
• GHS Pictograms: GHS05; GHS07
• GHS Signal Word: Danger
• GHS Hazard statements: H290-H302 + H312-H314; H290-H302-H314; H290-H314; H314
• GHS Precautionary statements: P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A; P280-P305 + P351 + P338-P310
• Personal Protective Equipment: Eyeshields, Gloves; Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
• RID/ADR: UN 2586 8/PG 3; UN 2922 8/PG 2; UN 3265 8/PG 2
• Storage Temperature: 2-8°C

Product Information

• Purity: ≥98.0% (T); ≥99.0% (T); ≥99.5%; 70% aq. soln.; 98.0-102.0% (1 M NaOH, T); 98+%
• Concentration: ~1 M in H2O; ~50% in H2O; ~70% in H2O; 0.1 M CH3SO3H in H2O (0.1N); 4 M (with 0.2% (w/v) tryptamine); 4.0 M±0.1 M in H2O (T); 70 wt. % in H2O
• Grade: anhydrous; electronic grade; for HPCE; for ion chromatography; for protein sequence analysis; puriss.; purum; technical
• Suitability: corresponds for IR spectroscopy; corresponds to standard for RP gradient test; in accordance for filter test
• Evaporation Residue: ≤0.1%
• Impurities: <0.5% water; ≤1,000 ppm Sulfate (SO4); ≤10 ppm Iron; ≤5 ppm ethyl methansesulfonate (GC); ≤5 ppm heavy metals; ≤5 ppm methyl methanesulfonate (GC); ≤50 ppm Chloride (Cl); impurities reacting with OPA reagent, none detected(fluorescence test)
• Cation Traces: Al: ≤0.01 mg/kg; Ba: ≤0.01 mg/kg; Bi: ≤0.01 mg/kg; Ca: ≤0.05 mg/kg; Cd: ≤0.01 mg/kg; Co: ≤0.01 mg/kg; Cr: ≤0.01 mg/kg; Cu: ≤0.01 mg/kg; Fe: ≤0.05 mg/kg; K: ≤0.05 mg/kg; Li: ≤0.01 mg/kg; Mg: ≤0.01 mg/kg; Mn: ≤0.01 mg/kg; Mo: ≤0.01 mg/kg; Na: ≤0.10 mg/kg; Ni: ≤0.01 mg/kg; Pb: ≤0.01 mg/kg; Sr: ≤0.01 mg/kg; Zn: ≤0.01 mg/kg
• Antion Traces: chloride (Cl-): ≤50 ppm; sulfate (SO42-): ≤100 ppm
• Quality Level: GMP
• Quality: ampule
• λ: H2O reference; neat
• Linear Formula: CH3SO3H

DETAILS

Sigma Aldrich - 516724

Legal Information
Product of Arkema

Sigma Aldrich - 516848

Legal Information
Product of Arkema

Sigma Aldrich - 64280

Frequently Asked Questions
Live Chat and Frequently Asked Questions are available for this Product.

Sigma Aldrich - M4141

Application
For complete protein and peptide hydrolysis with tryptophan recovery. After hydrolysis the samples are diluted prior to amino acid analysis.
Packaging
Ampules sealed under argon.

Sigma Aldrich - 471348

Packaging
1 L in glass bottle
100, 500 mL in glass bottle
18 L in poly drum
Legal Information
Product of Arkema Inc.

Sigma Aldrich - 471356

Packaging
100, 500 mL in poly bottle
5 L in poly drum
2 L in glass bottle
2.5 L in poly bottle
5, 25 mL in glass bottle

Sigma Aldrich - 64291

Packaging
ampoules 10 x 1 ml

Sigma Aldrich - 55517

General description
This certified eluent concentrate for ion chromatography is traceable by potentiometric titration to NIST Standard Reference Material. It is certified in accordance with ISO Guide 31. All details about exact content, uncertainty, traceability and expiry date are described in the certificate.Download at: http://www.sigma-aldrich.com.
Preparation Note
Prepared with methanesulfonic acid and high purity water (18.2 MΩ, 0.2 μm filtered)

REFERENCES

• Strong acid which has been used for the deprotection of peptides; see Appendix 6.
• Cleaves methyl ethers of phenols in the presence of the soft nucleophile methionine as a methyl acceptor. Polymethoxyaldehydes or ketones undergo selective cleavage of the methoxy group meta to the carbonyl: J. Chem. Soc., Perkin 1, 2288 (1977). Similarly, in combination with dimethyl sulfide, selective O-demethylation of mixed phosphate esters occurs: Synthesis, 451 (1983).