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| CAS No.: | 12034-12-7 |
|---|---|
| Name: | sodium superoxide |
| Article Data: | 38 |
| Molecular Structure: | |
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| Formula: | NaO2 |
| Molecular Weight: | 54.9886 |
| Synonyms: | Sodiumsuperoxide (6CI,7CI,8CI); Sodium dioxide; Sodium oxide (NaO2) |
| Density: | 2.200 |
| Melting Point: | 552°C |
| Safety: | An oxidizer. When heated to decomposition it emits toxic vapors of Na2O. |
| PSA: | 34.14000 |
| LogP: | 0.06700 |
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Chemistry
IUPAC Name: Sodium molecular oxygen
Synonyms: Sodium superoxide ; Sodium superoxide [UN2547] [Oxidizer]
CAS NO: 12034-12-7
Molecular Formula of Sodium superoxide (CAS NO.12034-12-7) : NaO2
Molecular Weight of Sodium superoxide (CAS NO.12034-12-7) : 54.988
Molecular Structure of Sodium superoxide (CAS NO.12034-12-7) : .png)
Enthalpy of Vaporization: 6.8 kJ/mol
Vapour Pressure: 322000 mmHg at 25°C
Production
NaO2 is prepared by treating sodium peroxide with oxygen at high pressures
Na2O2 + O2 → 2 NaO2
It can also be prepared by careful oxygenation of a solution of sodium in ammonia:
Na + O2 → NaO2
Safety Profile
An oxidizer. When heated to decomposition it emits toxic vapors of Na2O.
Standards and Recommendations
DOT Classification: 5.1; Label: Oxidizer
Specification
1.General Description :A solid. Yellowish at room temperatures but may become white when cooled. Prolonged exposure to fire or heat may cause vigorous decomposition and the rupturing of the containers.
2.Air & Water Reactions: Reacts with moisture and carbon dioxide in the air. Reacts vigorously with water to give oxygen and sodium hydroxide.
3.Reactivity Profile :sodium superoxide violently decomposes above 250°C, evolving oxygen .An oxidizing agent. Reacts with carbon dioxide to give sodium carbonate and oxygen. Mixtures with combustible materials (most organic compounds) are readily ignited by friction, heat, or contact with moisture.
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: 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.