Silver Iodide

AgI

Glaciogenic (cold-cloud) agentPrimary Agent

Mechanism of Action

Acts as ice nucleus (IN) due to crystalline lattice structure similar to natural ice. Induces freezing of supercooled water droplets.

Effective Temperature

-5°C and below

Delivery Methods

Pyrotechnic flares (burn-in-place and ejectable)

Ground-based acetone generators

Wing-mounted dispensers

Usage

Most widely used substance for cold-cloud seeding worldwide

Environmental Notes

Silver is toxic to aquatic life in certain forms, but concentrations from seeding operations are extremely low—far below EPA standards. Silver iodide is largely insoluble in water, reducing bioavailability.