GB/T 1270-2023 stipulates the relevant standards for chemical reagents cobalt chloride hexahydrate (cobalt chloride). Clarify its scope of application, covering scientific research, chemical analysis and other use scenarios. Describe the appearance and properties of the product, and specify the purity, impurity content and other key indicators of cobalt chloride in detail. Standardize test methods are used to detect various indicators, including content determination, impurity analysis steps. Provide a basis for manufacturers to control the mass of products and users to accurately select reagents, ensure that cobalt chloride plays a stable role in different fields, and promote the standardization development of related industries.