Moisture-free "canned air" blows away dust, dirt, and other dry contaminants from all kinds of surfaces and hard-to-access areas 100% 1,1,1,2-tetrafluoroethane (HFC) gas. Contains no CFCs or HCFCs and has a zero (stratospheric) ozone depletion potential (ODP). Nonabrasive; safe for most materials. Ultra-pure; leaves no residue. Non-flammable.