Agent Name

Potassium hydroxide

CAS Number

1310-58-3

Formula

H-K-O

Major Category

Other Classes

Synonyms

Caustic potash; Cyantek CC 723; Hydroxyde de potassium [French]; Potash; Potash lye; Potassa; Potasse caustique [French]; Potassio (idrossido di) [Italian]; Potassium (hydroxyde de) [French]; Potassium hydrate; Potassium hydroxide; [ChemIDplus] UN1813; UN1814

Category

Bases

Description

Odorless, white or slightly yellow lumps, rods, flakes, sticks, or pellets. [Note: May be used as an aqueous solution.]; [NIOSH]

Sources/Uses

Used to make liquid soaps; it is also used in paint, varnish removers, and drain cleaners; it is used in electroplating, photoengraving, and lithography. [ACGIH] Used as a wet etchant in semiconductor manufacturing at standard concentrations of 50% or 10%; [CSH, p. 46]

Comments

Liquid causes second or third degree burns after short contact. [CHRIS] Potassium hydroxide 30-70% is highly corrosive to skin; [Quick CPC] A corrosive substance that can cause pulmonary edema; [ICSC]

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

Ceiling (ACGIH)

2 mg/m3

Explanatory Notes

VP: negligible at room temperature; [CHEMINFO]

Adverse Effects
Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Biomedical References

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Processes

Industrial Processes with risk of exposure:

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