Method for rapidly measuring content of basic magnesium chloride in anhydrous magnesium chloride

The invention relates to the technical field of quality detection, and provides a method for rapidly measuring the content of basic magnesium chloride in anhydrous magnesium chloride, which comprises the following steps: S1, measuring the content of basic magnesium chloride in a group of anhydrous magnesium chloride solutions with different contents of basic magnesium chloride by adopting an acid dissolution/water dissolution method or iodometric method, and taking the content as an abscissa; measuring absorbance or turbidity values of a plurality of anhydrous magnesium chloride solutions by adopting a spectrophotometer or a turbidity meter, taking the absorbance or turbidity values as vertical coordinates, and drawing a standard curve; s2, preparing a to-be-detected sample with the same mass as the anhydrous magnesium chloride involved in the standard curve into a to-be-detected solution with the same volume as the anhydrous magnesium chloride involved in the standard curve, measuring the absorbance or turbi