| Melting point | 17-19 °C (lit.) |
| Boiling point | 167 °C/10 mmHg (lit.) |
| density | 1.475-1.485 g/mL at 20 °C 1.481 g/mL at 25 °C (lit.) |
| vapor density | 3.3 (vs air) |
| vapor pressure | 1 mm Hg ( 20 °C) |
| refractive index | n |
| Fp | >230 °F |
| storage temp. | 2-8°C |
| solubility | water: soluble1,000 g/L at 20°C |
| pka | -2.6(at 25℃) |
| form | Solution |
| color | brown |
| Specific Gravity | 1.48 (18/4℃) |
| Water Solubility | Miscible with water. Slightly miscible with benzene and toluene. Immiscible with paraffins. |
| λmax | λ: 240-320 nm Amax: <0.4 |
| Sensitive | Light Sensitive & Hygroscopic |
| Merck | 14,5954 |
| BRN | 1446024 |
| Stability: | Stable. Moisture sensitive. Incompatible with amines, bases, water, common metals. Releases a substantial amount of heat when diluted with water (add acid to water with care if diluting). |
| InChIKey | AFVFQIVMOAPDHO-UHFFFAOYSA-N |
| CAS DataBase Reference | 75-75-2(CAS DataBase Reference) |
| NIST Chemistry Reference | CH3SO3H(75-75-2) |
| EPA Substance Registry System | Methanesulfonic acid (75-75-2) |
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