Methanesulfonic acid

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 :n20/D 1.429(lit.)
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
color :brown
Specific Gravity :1.48 (18/4℃)
biological source :synthetic
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
Henry's Law Constant :7.3×10³ mol/(m³Pa) at 25℃, Wang et al. (2017)
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).
InChI :1S/CH4O3S/c1-5(2,3)4/h1H3,(H,2,3,4)
InChIKey :AFVFQIVMOAPDHO-UHFFFAOYSA-N
SMILES :O=S(O)(C)=O
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)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404 H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501 H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H361 Suspected of damaging fertility or the unborn child Reproductive toxicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501 H402 Harmful to aquatic life Hazardous to the aquatic environment, acute hazard Category 3
Precautionary statements:	P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P234 Keep only in original container. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P308+P313 IF exposed or concerned: Get medical advice/attention. P390 Absorb spillage to prevent material damage. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P405 Store locked up. P406 Store in corrosive resistant/… container with a resistant inner liner. P501 Dispose of contents/container to..…