This standard specifies the limit technical requirements and test methods for hazardous substances in building fire-proof coatings. It applies to all kinds of building fire-proof coatings used indoors, including veneer type, steel structure, concrete structure and cable fire-proof coatings, etc. Building fire-proof coatings for outdoor use can also be implemented by reference. The standard cites a series of specification documents, including determination methods for chemical reagents, volatile content, radionuclides, water quality, density, chlorinated hydrocarbons and formaldehyde content, etc. The technical requirements include the limit of hazardous substances in building fire-proof coatings, which should comply with the provisions listed in the standard.