Product Name: Oxygen difluoride (7783-41-7)

Molecular Formula: F₂O
Molecular Weight: 53.9962064g/mol
Mol File: 7783-41-7.mol
Density: 1.179g/cm³
Synonyms of Oxygen difluoride (7783-41-7): Difluorin emonoxide ; fluorine monoxide ; Difluoro oxide ; Fluorin oxide ; Fluorine oxide ; Oxygen fluoride ; OF₂.

Toxic; may be fatal if inhaled or absorbed through skin. Fire will produce irritating, corrosive and/or toxic gases. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Runoff from fire control may cause pollution.

Poison by inhalation. Human systemic effects by inhalation: chronic pulmonary edema or congestion. A corrosive skin, eye, and mucous membrane irritant. Attacks lungs with delayed appearance of symptoms. A very powerful oxidizer. Must be kept away from contact with reducing agents. Explosive reaction with adsorbents (e.g., silica gel, alumina, molecular sieve), diborane, halogens + heat, metal halides, aluminum chloride, antimony pentachloride (at 150°C), tungsten + heat, hydrogen sulfide, liquid nitrogen oxide, nitrosyl fluoride, charcoal, sulfur tetrafluoride. Forms spark-sensitive explosive mixtures with water or combustible gases (e.g., carbon monoxide, hydrogen, methane). Ignites on contact with diborane tetrafluoride, nonmetals (e.g., red phosphorus, boron powder, silicon), phosphorus(V) oxide, nitrogen oxide gas. Incandescent reaction with metals (e.g., aluminum, barium, cadmium, magnesium, strontium, zinc, zirconium, lithium (above 400°C)), potassium (above 400°C), sodium. Incompatible with NH₃, As₂O₃, Cl₂ + Cu, CrO₃, Ir, O₃, O₂ + H₂O, Pd, Pt, Rh, Ru, SiO₂. When heated to decomposition it emits highly toxic fumes of F⁻. See also FLUORIDES.
Substance does not burn but will support combustion. Vapors from liquefied gas are initially heavier than air and spread along ground. These are strong oxidizers and will react vigorously or explosively with many materials including fuels. May ignite combustibles (wood, paper, oil, clothing, etc.). Some will react violently with air, moist air and/or water. Cylinders exposed to fire may vent and release toxic and/or corrosive gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket.

OSHA PEL: CL 0.05 ppm
ACGIH TLV: CL 0.05 ppm
DOT Classification:  2.3; Label: Poison Gas, Oxidizer

 Oxygen difluoride (7783-41-7) is a colorless poisonous gas with a strong peculiar odor. Highly toxic by inhalation. Corrosive to skin and eyes. Can explode on contact with water. Decomposes to toxic gaseous fluorine if heated to high temperature. Prolonged exposure of the containers to high heat may result in their violent rupturing and rocketing. Used as an oxidizer for propellants.