A watusi is a type of Christmas firework that is popular in the Philippines. Its ingredients are yellow phosphorus,

potassium chlorate Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO3. In its pure form, it is a white crystalline substance. After sodium chlorate, it is the second most common chlorate in industrial use. It ...

, potassium nitrate, and trinitrotoluene.
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The ingredients in the firework are highly toxic, and ingestion can lead to painful death. In particular, children have been killed by watusi fireworks after sucking on them or mistaking them for sweets. The yellow phosphorus, the most dangerous component of the watusi, may explode and rip apart the esophagus when ingested. The Department of Health is attempting to forbid watusi, because it caused hundreds of children to die of phosphorus poisoning.

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