12030-88-5

Product Name: Potassium superoxide
Synonyms: Potassium oxide ; Potassium superoxide ; Potassium dioxide ; Burntpotash ; Cacinedpotash ; K(O₂) ; Potassium oxide super ; Potassium superoxide KO₂
Molecular Formula : KO₂
Molecular Weight : 71.09
Molecular Structure:
CAS NO: 12030-88-5
EINECS: 234-746-5
Mol File: 12030-88-5.mol
Enthalpy of Vaporization: 6.8 kJ/mol
Vapour Pressure: 322000 mmHg at 25°C
Melting point:400 °C
Density : 2,14 g/cm³
Water Solubility : reacts
Sensitive : Potassium dioxide (CAS NO.12030-88-5)  is air & moisture sensitive
Stability:  Potassium dioxide (CAS NO.12030-88-5) is stable, but reacts violently with water. Incompatible with moisture, alcohols, strong reducing agents, strong acids, finely powdered metals.
Appearance:  Potassium dioxide (CAS NO.12030-88-5) is light yellow powder or chunks.

Reported in EPA TSCA Inventory.

Explosive reaction when heated with carbon, 2-aminophenol + tetrahydrofuran (at 65°C). Forms a friction-sensitive explosive mixture with hydrocarbons. Violent reaction with diselenium dichloride, ethanol, potassium-sodium alloy. May ignite on contact with organic compounds. Incandescent reaction with metals (e.g., arsenic, antimony, copper, potassium, tin, and zinc). When heated to decomposition it emits toxic fumes of K₂O. See also PEROXIDES, INORGANIC; PEROXIDES, ORGANIC.
Hazard CodesO,C
Risk Statements 8-14-34-35
R8 :Contact with combustible material may cause fire. 
R14 :Reacts violently with water. 
R34:Causes burns. 
R35:Causes severe burns.
Safety Statements 17-27-36/37/39-8-45-26
S17:Keep away from combustible material. 
S27:Take off immediately all contaminated clothing. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
S8:Keep container dry. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR UN 2466 5.1/PG 1
WGK Germany 3
RTECS TT6053000
HazardClass 5.1
PackingGroup I
HS Code 28259080
 

DOT Classification:  5.1; Label: Oxidizer

1.General Description: A yellowish to white solid. Melting point 948°F. Mixtures with combustible material readily ignite by friction, heat, or contact with moisture. Prolonged exposure to fire or heat may cause vigorous decomposition of the material and rupturing of the container.
2.Air & Water Reactions: Reacts explosively with water .
3.Reactivity Profile: Potassium superoxide is a powerful oxidizer. Forms on the surface of potassium metal, solid or molten, that is exposed to the air. Attempts to extinguish burning potassium with powdered graphite has resulted in violent explosions . Highly oxidized potassium metal was dropped into a dish of ethyl alcohol, an immediate explosion shattered the dish. Potassium superoxide was considered the cause of the reaction .Potassium superoxide should not be added to pure organic materials (hydrocarbons), as ignition and violent explosion may occur. Oxidation of arsenic, antimony, copper, potassium, tin, or zinc proceeds with incandescence.Interaction between the superoxide and diselenium dichloride is violent.
4.Health Hazard :TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. Fire may produce irritating and/or toxic gases. Toxic fumes or dust may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.). Runoff from fire control or dilution water may cause pollution.
5.Fire Hazard:  Potassium dioxide (CAS NO.12030-88-5) may explode from friction, heat or contamination. These substances will accelerate burning when involved in a fire. May ignite combustibles (wood, paper, oil, clothing, etc.). Some will react explosively with hydrocarbons (fuels). Containers may explode when heated. Runoff may create fire or explosion hazard.