This document specifies the requirements, test methods, inspection rules, marking and accompanying documents, packaging, transportation and storage of sodium bromide, a by-product of pentabromobenzyl acrylate. This document is applicable to the sodium bromide-containing aqueous solution produced during the production of polypentabromobenzyl acrylate using pentabromotoluene and sodium acrylate as raw materials. The liquid sodium bromide product is obtained after pH adjustment, adsorption decolorization, centrifugation, concentration, etc. , and solid sodium bromide products obtained after further concentration, drying, etc., are mainly used in the chemical industry.