(a) Defined. Pyroxylin plastic (cellulose nitrate) shall mean any plastic substance, material or compound other than explosives covered by section 22-71, having cellulose nitrate as a base, by whatever name known, when in the form of blocks, slabs, sheets, tubes or fabricated shapes.
(b) Permit required for storage. All retailers, jobbers and wholesalers storing or handling more than twenty-five (25) pounds of pyroxylin plastic shall obtain a permit from the Director.
(c) Permit required for manufacture. A permit shall be required for the manufacture of articles of pyroxylin plastic, which shall include the use of pyroxylin in the manufacture or assembly of other articles.
(d) Storage of picture film. No person shall store, keep or have on hand more than twenty- five (25) pounds (for 35 mm film about 5,000 feet) or cellulose nitrate motion picture film without a permit from the Director. Film having a cellulose acetate or other approved slow burning base, marked safety film, is exempt from this provision. (1975 L.M.C., ch. 23, § 1.)