Lead Styphnate Supplier South Africa

What Is Lead Styphnate?

Lead styphnate (lead 2,4,6-trinitroresorcinoxide) is a primary explosive — a heavy metal salt of styphnic acid (2,4,6-trinitroresorcinol) used as the primary initiating charge in commercial percussion caps, electric detonators, and blasting cap assemblies. As a primary explosive, lead styphnate is extremely sensitive to friction, impact, and electrostatic discharge, and detonates with sufficient output to reliably initiate the secondary explosive components (tetrazene, lead azide, PETN) in commercial detonator assemblies. Lead styphnate is characterised by its reliable initiation by stab, percussion, electrostatic discharge, and flame — properties that make it suitable as the primary charge in percussion-initiated detonators and as a flame-sensitive component in electric bridgewire assemblies.

Use in Commercial Detonator Manufacturing

In commercial detonator manufacturing, lead styphnate is used as the primary initiating charge in the detonator’s initiating assembly — the first explosive component in the detonation train that converts the initiating stimulus (electrical current through bridgewire, stab or percussion) into an explosive output sufficient to initiate the succeeding PETN or RDX base charge. Lead styphnate is often used in combination with tetrazene (which sensitises the assembly to friction and stab initiation) and lead azide (which provides stronger output to bridge from primary to secondary explosive) in the complete initiating layer. The precise formulation and assembly of initiating compounds in detonators is the domain of licensed detonator manufacturers; supply of lead styphnate is restricted to these licensed facilities.

Regulatory and Supply Requirements

Lead styphnate is classified as a primary explosive and a Schedule 1 explosive under the Explosives Act (South Africa) and is subject to the most stringent manufacturing, storage, and handling requirements of any explosive class. It is also regulated as a hazardous substance under REACH and equivalent legislation due to the lead content. Supply is strictly restricted to licensed detonator and explosive component manufacturers holding appropriate manufacturing licences, storage licences, and environmental authorisations. Terracore Chemicals supplies lead styphnate to licensed explosive component manufacturers in South Africa and the region. No supply to unlicensed entities — all enquiries require full licensing documentation.