Chalk
Definition
Chalk is a form of limestone. Chalk poisoning occurs when someone accidentally or intentionally swallows chalk.
Poisonous Ingredient
Chalk is generally considered to be non-poisonous, but it can cause problems if large amounts are swallowed.
Where Found
- Billiard chalk (magnesium carbonate)
- Blackboard and artist's chalk (gypsum)
- Tailor's chalk (talc)
Note: This list may not include all uses of chalk.
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