Fatty acid methyl ester sulfonate(MES) raw material:coconut oil / palm oil CAS No. 93348- ... : Methyl Ester SulfonateCAS No.: 93348-22-2 Specification: Methyl Ester Sulfonate / MESTotal active matter content≥90%≥85%≥75%Appearance (25°C ... ≤5Petrol ether soluble, %≤3.0≤3.0≤4.0Di-sodium salt, %≤4.0≤6.0≤8pH (25°C,1% a.m ... , kept away from sunshine and rain. Fatty acid methyl ester sulfonate(MES)