Method for measuring content of sodium sulfate in electrolyte of lead-acid storage battery

The invention relates to the technical field of lead-acid storage batteries, and particularly discloses a method for measuring the content of sodium sulfate in an electrolyte of a lead-acid storage battery. According to the method for measuring the content of the sodium sulfate in the electrolyte of the lead-acid storage battery, the absolute ethyl alcohol is added into the electrolyte in advance before the electrolyte is titrated by adopting barium chloride, so that the solubility of the barium chloride in a titration system is changed, and the titration end point can be judged in advance; the pH value of the electrolyte is controlled to be 3.7-4.0 for titration, so that slightly excessive barium chloride and the madder-S indicator can generate an obvious red complex under the condition, the titration end point can be judged more intuitively and obviously, the titration accuracy is improved, the repeated titration times are reduced, and the detection efficiency is higher. The method for detecting the content