A5406612
Methanesulfonic acid , 98% , 75-75-2
Synonym(s):
Methanesulfonic acid;Methanesulfonic acid solution;MSA
CAS NO.：75-75-2
Empirical Formula: CH4O3S
Molecular Weight: 96.11
MDL number: MFCD00007518
EINECS: 200-898-6
Update time: 2022-07-08
PRODUCT Properties
| 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 |
| Flash point: | >230 °F |
| storage temp. | 2-8°C |
| solubility | water: soluble1,000 g/L at 20°C |
| pka | -2.6(at 25℃) |
| form | Solution |
| Specific Gravity | 1.48 (18/4℃) |
| color | brown |
| Water Solubility | Miscible with water. Slightly miscible with benzene and toluene. Immiscible with paraffins. |
| Sensitive | Light Sensitive & Hygroscopic |
| λmax | λ: 240-320 nm Amax: <0.4 |
| 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) |
Description and Uses
Polymerization catalyst.
Methanesulfonic acid has been developed as an esterification catalyst in place of sulfuric acid for the synthesis of resins in paints and coatings. One of the major advantages of methanesulfonic acid over sulfuric acid is that it is not an oxidizing species.
Safety
| Symbol(GHS) |   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 | 34-22-21/22-35 |
| Safety Statements | 26-36-45-1/2-36/37/39 |
| RIDADR | UN 3265 8/PG 2 |
| WGK Germany | 1 |
| RTECS | PB1140000 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 29041000 |
| Hazardous Substances Data | 75-75-2(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 649 mg/kg LD50 dermal Rabbit 200 - 2000 mg/kg |
