Sodium hydroxide is a potentially dangerous substance. It can hurt you if it touches your skin, if you drink it or if you breathe it. Eating or drinking sodium hydroxide can cause severe burns and immediate vomiting, nausea, diarrhea or chest and stomach pain, as well as swallowing difficulties.

(Dangerous when wet) Sodium is a FLAMMABLE SOLID which will ignite spontaneously in AIR or MOIST AIR and reacts violently with WATER or STEAM to produce flammable and explosive Hydrogen gas.

Effects of Exposure: Sodium compounds have variable toxicity. Sodium ions as such are practically nontoxic. When bulk sodium chloride is heated to high temperature, a vapor is emitted which is irritating to the eyes, particularly. Ingestion of large amounts of sodium chloride can cause irritation of the stomach.

Just to be absolutely clear: It's not safe to apply pure sodium hydroxide to your skin, in any amount or concentration. Sodium hydroxide can cause chemical burns and severe skin damage.

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