The Consumer Product Safety Commission regulates consumer fireworks under the Federal Hazardous Substances Act, and the CPSC’s consumer fireworks regulations set hard limits on explosive content, ban the most dangerous devices and chemicals outright, and require specific performance features, warning labels, and a certificate of conformity before a product can be sold. The rules live mainly in 16 CFR Parts 1500 and 1507, and they apply to every consumer firework offered for sale in the United States, whether imported or made domestically.1U.S. Consumer Product Safety Commission. Fireworks Business Guidance
Which Fireworks the CPSC Actually Regulates
Federal law splits fireworks into two categories. Consumer fireworks are the smaller items classified by the Department of Transportation as UN 0336 (Class 1.4G). Ground devices in this category can contain no more than 50 milligrams of flash powder, and aerial devices no more than 130 milligrams. The CPSC writes and enforces the safety standards for these products.1U.S. Consumer Product Safety Commission. Fireworks Business Guidance
Display fireworks are the large aerial shells and professional-grade devices classified as UN 0333, 0334, or 0335. Importing, manufacturing, or dealing in display fireworks requires a federal explosives license or permit from the Bureau of Alcohol, Tobacco, Firearms and Explosives. ATF does not regulate completed consumer fireworks once they leave the manufacturer, though manufacturing consumer fireworks for commercial sale still requires an ATF manufacturer’s license.2Bureau of Alcohol, Tobacco, Firearms and Explosives. Fireworks
Fireworks Banned Outright
Two provisions in 16 CFR 1500.17(a) block the most dangerous items from the consumer market. Subsection (a)(3) bans fireworks designed to produce a loud bang if the charge exceeds 2 grains (130 milligrams) of pyrotechnic composition. That sweeps in cherry bombs, M-80 salutes, silver salutes, and large aerial bombs.3eCFR. 16 CFR 1500.17 – Banned Hazardous Substances
Subsection (a)(8) sets a lower threshold for firecrackers specifically: any firecracker producing an audible effect from more than 50 milligrams (0.772 grains) of pyrotechnic composition is banned. The same subsection prohibits devices that can be confused with candy or food, such as “dragon eggs” and “cracker balls.”3eCFR. 16 CFR 1500.17 – Banned Hazardous Substances A narrow exception lets wildlife management programs run by the Department of the Interior or equivalent state agencies obtain otherwise-banned devices for animal control, on written application.
What a Legal Consumer Firework Must Do
Any consumer firework other than a firecracker has to meet the performance requirements in 16 CFR Part 1507. A device that fails is automatically classified as a banned hazardous substance and pulled from commerce.4eCFR. 16 CFR Part 1507 – Fireworks Devices
Fuse Timing
A fused device must burn for at least 3 seconds but no more than 9 seconds before ignition. Long enough to light and step back; short enough that a user isn’t tempted to walk over and inspect what looks like a dud.4eCFR. 16 CFR Part 1507 – Fireworks Devices
Base Stability
Fireworks meant to operate upright, such as fountains, must sit on a base whose minimum width or diameter is at least one-third of the total height of the device, including any cap. That ratio keeps a fountain from toppling and firing sideways.4eCFR. 16 CFR Part 1507 – Fireworks Devices
Prohibited Chemicals
Under 16 CFR 1507.2, manufacturers cannot use certain chemicals in consumer fireworks. The list covers arsenic sulfide, arsenates, and arsenites; boron; gallates and gallic acid; mercury salts; picrates and picric acid; thiocyanates; and zirconium. Chlorates are banned except in colored smoke mixtures containing equal or greater sodium bicarbonate, in caps and party poppers, and in small devices with limited total powder. Pure magnesium is banned, though magnesium-aluminum alloys (magnalium) are allowed. Both red and white phosphorus are banned, with an exception for red phosphorus in caps and party poppers. Titanium is banned in fine particle sizes of 100-mesh or smaller.4eCFR. 16 CFR Part 1507 – Fireworks Devices
Warning Labels on Every Device
Consumer fireworks must carry specific warning language dictated by 16 CFR 1500.14(b)(7), and the regulation prescribes different wording for each device category. A fountain, for example, must display “Warning” or “Caution” with a hazard description such as “FLAMMABLE” or “EMITS SHOWERS OF SPARKS,” along with directions to use outdoors only, place on a level surface, light the fuse, and move away. Roman candles carry the hazard statement “SHOOTS FLAMING BALLS” and must tell the user to stick the butt end in the ground and never hold the device by hand.5eCFR. 16 CFR 1500.14 – Products Requiring Special Labeling Any device type not listed by name still has to carry a warning covering where and how to use it and what precautions to take.
Each individual firework in a retail assortment needs its own full label, not just the outer box. The assortment package itself must show a warning on the main panel reading: “WARNING—This assortment contains items that may be hazardous if misused and should be used only under adult supervision. IMPORTANT—Read cautions on individual items carefully.”6eCFR. 16 CFR 1500.83 – Exemptions for Small Packages, Minor Hazards
Formatting rules in 16 CFR 1500.121 scale letter height to the size of the display panel. On the smallest packages (2 square inches or less), the signal word must be at least 3/64 of an inch tall; on packages over 30 square inches, the signal word minimum rises to 5/32 of an inch. Signal word, hazard statement, and any instruction to read further cautions must be grouped in a rectangular block on the main display panel and contrast sharply with the background. If an outer wrapper covers the container at retail, the labeling has to appear on the wrapper too or be clearly legible through it.7eCFR. 16 CFR 1500.121 – Labeling Requirements
Certificate of Conformity Before Sale
Before consumer fireworks reach a shelf, the importer or domestic manufacturer must issue a General Certificate of Conformity. This written document declares that the products have been tested and comply with all applicable federal safety rules. Testing can cover each product individually or rely on a reasonable testing program representing the production lot.8U.S. Consumer Product Safety Commission. General Certificate of Conformity
The certificate must list at least the month and year of manufacture and the city, state (if applicable), and country of final assembly. Manufacturers with multiple facilities in the same city must give the street address of the specific factory. It must also name a person responsible for maintaining the test records, with a full mailing address, email, and phone number. That contact doesn’t have to work for the certifying company, but the certifying company is on the hook when the CPSC asks to see the reports.8U.S. Consumer Product Safety Commission. General Certificate of Conformity
How Fireworks Can and Cannot Be Shipped
Even legal consumer fireworks can’t move through every channel. The U.S. Postal Service bans all fireworks from the mail, classifying them as Division 1.1 through 1.4 explosives regardless of size. That covers roman candles and skyrockets on one end and small firecrackers on the other.9United States Postal Service. Publication 52 – Hazardous, Restricted, and Perishable Mail The TSA prohibits fireworks in both carry-on and checked baggage on commercial flights.10Transportation Security Administration. Fireworks Fireworks you buy while traveling come home by car or not at all. Commercial ground shipment of consumer fireworks is legal but regulated by the Department of Transportation under hazardous materials rules.
Enforcement and Penalties
CPSC enforcement often starts at the port of entry. Agency staff work with U.S. Customs and Border Protection to flag incoming fireworks shipments for inspection, and samples get pulled and tested against the performance, chemical, and labeling standards. Shipments that fail are detained or seized before they reach a store.
Non-compliant fireworks already in distribution can trigger a recall, either voluntary or mandatory, with consumers typically instructed to return the products for a refund. Companies that sell banned fireworks, violate consent decrees, or fail to report known hazards face significant civil penalties. As of 2022, the maximum civil penalty was $120,000 per individual violation and $17,150,000 for a related series of violations, adjusted periodically for inflation.11Federal Register. Civil Penalties; Notice of Adjusted Maximum Amounts
State Law Can Be Stricter
Federal rules are the floor, not the ceiling. Every state imposes its own rules on which consumer fireworks can be sold, purchased, or used inside its borders. Roughly 29 states allow all types of consumer fireworks, including reloadable aerial shells. Others restrict sales to ground-based and handheld “safe and sane” items like sparklers and fountains. Massachusetts prohibits all consumer fireworks entirely. A product that’s fully compliant with CPSC rules can still be illegal to possess where you live, so check state and local law before you buy.