Appendix E Hazard Categories — 2025 California Fire Code
California Fire Code (Title 24, Part 9) · 2025 edition · updated 2026-09-25 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Fire Code (Title 24, Part 9) Appendix E · Effective January 1, 2026 · Official source: Building Standards Commission
This appendix is for information purposes and is not intended for adoption.
User notes:
About this appendix: Appendix E contains guidance for designers, engineers, architects, code officials, plans reviewers and inspectors in the classifying of hazardous materials so that proposed designs can be evaluated intelligently and accurately. The descriptive materials and explanations of hazardous materials and how to report and evaluate them on a Safety Data Sheet (SDS) are intended to be instructional as well as informative. This appendix also provides a comparative tool to better understand how the classifications in the International Codes (I-Codes) relate to the UN Recommendations on the Transport of Dangerous Goods, Model Regulations and UN Globally Harmonized System of Classification and Labelling of Chemicals (GHS).
ICC code development note: Code change proposals to this appendix will be considered by the IFC Code Development Committee during the 2024 (Group A) Code Development Cycle.
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