Fireworks commonly used materials: 9. Properties of red Dan English name lead tetroxide : molecular formula for Pb3O,, molecular weight of 685.60.
- Physicochemical properties. Appearance and properties: bright orange-red powder or lumpy solid; Boiling point: 500°C (decomposition); Relative density (water = 1):9.1; Solubility: insoluble in water, soluble in hot lye, dilute nitric acid, acetic acid, hydrochloric acid and so on.
- Health Hazards. Frequent inhalation through the mouth or nose can be toxic, causing headache, nausea, vomiting, abdominal cramps, anaemia and other symptoms.
- Hazardous properties. Decomposed by high heat to release toxic body.
- Emergency treatment of leakage. Isolate the leaking contaminated area and restrict access. It is recommended that emergency personnel wear dust masks (full face masks) and anti-virus clothing. Do not directly contact the leaked material. Small amount of leakage: Avoid raising dust and collect in dry, clean, covered containers with a clean shovel. Large quantity leakage: cover with plastic sheet, canvas, etc., then collect for recycling or transport to waste disposal site for disposal.
- Fire extinguishing methods. Use water, sand, etc. to extinguish the fire.
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