Ch. 65 Pyroxylin (cellulose Nitrate) Plastics — 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) Chapter 65 · Effective January 1, 2026 · Official source: Building Standards Commission
User notes:
About this chapter: Chapter 65 addresses the significant hazards associated with pyroxylin (cellulose nitrate) plastics, which are the most dangerous and unstable of all plastic compounds. The chemically bound oxygen in their structure permits them to burn vigorously in the absence of atmospheric oxygen at a rate 15 times greater than comparable common combustibles. Strict compliance with the provisions of this chapter, along with proper housekeeping and storage arrangements, helps to reduce the hazards associated with pyroxylin (cellulose nitrate) plastics in a fire or other emergencies.
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