1.4S UN Classification Definition

Hazard Division 1.4–Ammunition which presents no significant hazard.Compatibility Group S–Substance or article so packed or designed that any hazardous effects arising from accidental functioning are confined within the package unless the package has been degraded by fire, in which case all blast or projection effects are limited to the extent that they do not significantly hinder or prohibit fire fighting or other emergency response efforts in the immediate vicinity of the package.