GB/T 2019-2006 For industrial alkane sulfonates in surfactants, the direct two-phase Titrimetric method is used to determine the content of alkane monosulfonates. Applicable to related industrial products. In a specific two-phase system, the titrant is reacted with alkane monosulfonates, and the endpoint is determined by the indicator Color change. The standard specifies the required instruments, such as Burette, etc., and specifies the type and formulation of reagents. Detailed description of sample preparation, titration operation process, including titrant addition speed, oscillation method. According to this standard, the content of alkane monosulfonates can be accurately determined, providing key data for surfactant quality control and product formulation optimization, and assisting related industrial production.