SH/T 1837-2023 "Determination of chlorine content in polypropylene (PP) Resin powder, potential Titrimetric method" specifies the potential Titrimetric method for the determination of chlorine content in polypropylene (PP) Resin powder. Suitable for samples with chlorine content greater than 9mg/kg. Methods include weighing the sample, carbonizing, ashing, dissolving the residue, transferring the solution, diluting bandwidth evaluation and Potentiometric titration, poten-tiometry. Using a silver nitrate (AgNO3) solution as a titrator, record the consumption volume and calculate the chlorine content. The standard describes the reagent preparation, instrumentation and test procedures in detail, providing a basis for the accurate determination of chlorine content in polypropylene (PP) Resin powder.