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Sodium Hydroxide

Hazardous Classification (according to GHS)

HAZARDOUS

CAS Number

1310-73-2

Signal Word

DANGER

Hazard Pictograms

GHS05 - Corrosion - Corrosive chemicals, may cause severe skin and eye damage and may be corrosive to metals. — GHS05 – Corrosion – Corrosive chemicals, may cause severe skin and eye damage and may be corrosive to metals.

GHS07 - Exclamation mark - Low level toxicity. This includes respiratory, skin, and eye irritation, skin sensitisers and chemicals harmful if swallowed, inhaled or in contact with skin. — GHS07 – Exclamation mark – Low level toxicity. This includes respiratory, skin, and eye irritation, skin sensitisers and chemicals harmful if swallowed, inhaled or in contact with skin.

Hazard Statements & Categories

H314 Causes severe skin burns and eye damage (Class: Corrosion/irritation – Skin, Category 1A)
H335 May cause respiratory irritation (Class: Specific Target Organ Toxicity – respiratory irritation – Single exposure, Category 3)

Other names

Caustic soda
Lye

What It Does

Not entered.

Notes

Not entered

Information Sources

https://hcis.safeworkaustralia.gov.au/HazardousChemical/Details?chemicalID=4177
https://en.wikipedia.org/wiki/Sodium_hydroxide

Last Updated

October 13, 2025

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