Methanesulfonic acid solution
SIAL/471348 - 70 wt. % in H2O
Synonym: Mesylic acid; MsOH
CAS Number: 75-75-2
Empirical Formula (Hill Notation): CH4O3S
Molecular Weight: 96.11
MDL Number: MFCD00007518
Linear Formula: CH3SO3H
Product Type: Chemical
| concentration | 70 wt. % in H2O |
| density | 1.319 g/mL at 25 °C |
| impurities | ≤1,000 ppm Sulfate (SO4) |
| ≤10 ppm Iron | |
| ≤50 ppm Chloride (Cl) | |
| InChI | 1S/CH4O3S/c1-5(2,3)4/h1H3 |
| InChI key | AFVFQIVMOAPDHO-UHFFFAOYSA |
| Quality Level | 200  |
| refractive index | n |
| SMILES string | CS(O)(=O)=O |
| vapor density | 3.3 (vs air) |
| vapor pressure | <1 mmHg ( 20 °C) |
| Application: | Methanesulfonic acid solution may be used to study the corrosion behavior of stainless steel. |
| General description: | The product is a 70% aqueous solution of methanesulfonic acid (MSA). MSA is a strong organic acid. The chemical oxidation of dimetyl sulfide in the atmosphere leads to the formation of MSA in large quantities. MSA undergoes biodegradation by forming CO2 and sulphate. It is considered a green acid as it is less toxic and corrosive in comparison to mineral acids.1 The aqueous MSA solution has been considered a model electrolyte for electrochemical processes. |
| Legal Information: | Product of Arkema Inc. |
| Packaging: | 1 L in glass bottle |
| Packaging: | 100, 500 mL in glass bottle |
| Packaging: | 18 L in poly drum |
| Symbol |   GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H290 - H302 - H314 - H335 |
| Precautionary statements | P234 - P261 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 21/22-34 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN 3265 8 / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Density | 1.319 g/mL at 25 °C |
| Refractive Index | n |
| UNSPSC | 12352100 |