While Iran's military sought to deny the delivery of ammonium perchlorate from China, new videos emerged showing an apocalyptic scene at the still-smoldering port.

IHI Corporation and GE Vernova have completed a new large-scale test facility for advancing the capabilities of next-generation combustion technologies using ammonia.

AMPAC is the leading North American manufacturer of ammonium perchlorate, a critical oxidizer and the primary ingredient used in solid rocket propellants for both defense and space systems.

More Atta Kenare/Getty Images What to Know The shipment from China includes thousands of tons of ammonium perchlorate, a vital chemical oxidizer for producing solid-fuel ballistic missiles.

Potassium chlorate includes one fewer atom of oxygen per molecule than the potassium perchlorate used in black smoke and is an even stronger oxidizer—so strong it’s dangerous to use with ...

A Washington Post examination of videos, satellite imagery and expert analysis reconstructs how the fatal explosion at Iran’s Shahid Rajaee port unfolded.

The shipment of Chinese sodium perchlorate indicates a rapid rebuilding of Iran’s missile industry since Israeli strikes in October – with Beijing’s help.

Ammonium perchlorate is among chemicals controlled by the Missile Technology Export Control Regime, a voluntary international anti-proliferation body.

Ammonium perchlorate is among chemicals controlled by the Missile Technology Export Control Regime, a voluntary international anti-proliferation body.