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Methyl sulfonic acid
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Methanesulfonic acid (MsOH) CAS 75-75-2 is a colorless liquid with the chemical formula CH3SO3H. It is the simplest of the alkylsulfonic acids. Salts and esters of methanesulfonic acid are known as mesylates (or methanesulfonates, as in ethyl methanesulfonate). It is hygroscopic in its concentrated form. Methanesulfonic acid may be considered an intermediate compound between sulfuric acid (H2SO4), and methylsulfonylmethane ((CH3)2SO2), effectively replacing an –OH group with a –CH3 group at each step. This pattern can extend no further in either direction without breaking down the –SO2– group. Methanesulfonic acid can dissolve a wide range of metal salts, many of them in significantly higher concentrations than in hydrochloric or sulphuric acid.



Appearance              Clear liquid

Purity by weight %   70+/-0.5
Color (APHA)             <20
Cl-(PPM)                    <8
SO42-(PPM)              <100
Fe3+(PPM)                <10
Ca2+(PPM)                <5
Na+(PPM)                  <5
Oxidizabes(PPM)       <20
Density                     1.345-1.36


As solvent, it is usually used as catalyst for the reaction of alkylation, esterify and poplymerization, 

and it is also used for pharmaceutical industry and electroplate.



250kg drum. 20mt per 20ft container

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