Bang snaps

The Knallerbse (also bang devil ) is a small, approximately pea-sized pyrotechnic article, thrown to the ground resulting in a bang.

Operation

In a shell of paper is a mineral granules from smallest granules ( sand), with a small amount of silver fulminate ( silver fulminate ) are offset. The sand acts as a friction agent. By the resulting friction during the impact, the unstable silver fulminate decomposes explosively in carbon monoxide, nitrogen, and silver, wherein the pressure of the resulting gas tears the paper wrapper. The silver is reflected partially reflected as a black coating on the sand grains and paper residues.

Security

For security throwdowns are transported and traded in small quantities in cardboard packaging, which (usually sawdust ) are filled with a shock absorbing material. Knallerbsen subject to the Explosives Act and include as classified by the legally competent Federal Institute for Materials Research and Testing ( BAM) to the fireworks of class PI, according to the transport regulations to dangerous goods of class I. A maximum of 2.5 mg of silver contained and may be delivered throughout the year also to persons under the age of 18. Like all pyrotechnic articles must throwdowns are authorized in Germany by BAM and share the approval markings on the packaging. Non-approved products that are imported in large quantities, especially from China and Southeast Asia are potentially dangerous and can cause serious injuries as a result of non-compliance with regulations. Therefore, is also the import by private individuals as well as the use of non- certified products under punishment.

• Pyrotechnic article