How long is the shelf life of fireworks?
Absolutely not. The stability of the internal composition in expired fireworks fails, leading to risks such as delayed fuse ignition, mid-air extinguishing, clumping causing barrel bursts, and irregular debris scattering. This can easily cause burns, injuries, or even fires.
Regular Household Fireworks & Standard Firecrackers (Shelf Life: 3 Years) Mass-market consumer products for personal use, including aerial shells, flower pots, peony fireworks, ground fountains, standard handheld sparklers, and festival mini-bursts, all have an official shelf life of 3 years, provided they do not contain metal flash compositions or iron sand. The shelf life starts from the manufacturing date (year and month).
Special Effects Fireworks with Flash/Iron Sand (Shelf Life: 1 Year) Fireworks featuring bright flashes, metallic bursts, or similar effects contain active materials like iron sand or magnesium-aluminum powder. These are highly reactive and prone to oxidation and moisture damage. National standards mandate a strict shelf life of only 1 year for such products. Regardless of appearance, any product exceeding one year is considered expired and must not be ignited.
A cool, dry storage environment is the standard for extending the usability of household fireworks.
Special Effects Fireworks with Flash/Iron Sand (Shelf Life: 1 Year) Fireworks featuring bright flashes, metallic bursts, or similar effects contain active materials like iron sand or magnesium-aluminum powder. These are highly reactive and prone to oxidation and moisture damage. National standards mandate a strict shelf life of only 1 year for such products. Regardless of appearance, any product exceeding one year is considered expired and must not be ignited.
A cool, dry storage environment is the standard for extending the usability of household fireworks.
Fireworks that are expired or improperly stored suffer from compromised stability in their gunpowder, fuses, and special effects compositions. This drastically increases safety risks and is a primary cause of Spring Festival firework accidents. Common dangers include: damp/clogged fuses, delayed ignition after lighting, mid-air failure, clumping leading to barrel bursts, low-altitude close-range explosions, erratic spraying, and casing fragments causing injuries or fires.