Pyroxylin plastics.
Municipal Code of Chicago § 14X-5-504.2.8
in effect14X-5-504.2.8 Pyroxylin plastics.
An automatic sprinkler system must be provided throughout existing buildings where cellulose nitrate film or pyroxylin plastics are manufactured, stored, or handled in quantities exceeding 100 pounds (45 kg). Vaults located within buildings for the storage of raw pyroxylin must be protected with an automatic sprinkler system capable of discharging 1.66 gallons per minute per square foot (68 L/min/m2) over the area of the vault.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2675737Fetched: 10/24/2026
