Cryospray
Type
Cost
20 cr
Weight
1 lb.
An aerosol flash-freezing agent, cryospray is normally used to preserve specimens collected during scientific expeditions, but enterprising users have learned a blast of the spray can make metal brittle (a use of the spray reduces an unattended metal object’s AC by 2) or as an improvised weapon (the spray can only be used on targets within 5 feet, and does 2d6 cold damage).
A single canister contains enough for 10 uses.
Source