Potassium Hydroxide Chemical Storage Specifications

Compliant storage and rental solutions for Potassium Hydroxide (KOH). EPA, OSHA, and NFPA guidance for containment, segregation, and fire protection — with rental buildings matched to this material.

Non-flammableNon-Flammable Storage

Chemical formula

About Potassium Hydroxide

Potassium Hydroxide is an odorless, white or slightly yellow, flakey or lumpy solid which is often in a water solution. It is used in making soap, as an electrolyte in alkaline batteries and in electroplating, lithography, and paint and varnish removers. Liquid drain cleaners contain 25 to 36% of Potassium Hydroxide.

Structured hazard data

Hazard class
Corrosive to metals, category 1
Storage category
Non-Flammable Storage
Flammable
No
Flash point
See SDS
Storage temperature
20 C
Recommended extinguishing agent
Dry Chemical
Compatibility / segregation
Incompatibilities with Other Materials: Water, metals, acids. Hazardous Decomposition Products: Oxides of potassium.

Acute oral toxicity Category 4 Skin Corrosion/Irritation Category 1 A Serious Eye Damage/Eye Irritation Category 1 Specific target organ toxicity (single exposure) Category 3 Target Organs - Respiratory system.

Fire Suppression System

Dry Chemical fire suppression is recommended for Potassium Hydroxide

  • Water

    Water

  • Dry Chemical

    Dry Chemical · Recommended

  • CO₂ / Other

    CO₂ / Other

Guidance: Dry Chemical fire suppression is generally recommended for Potassium Hydroxide (KOH). *Please consult your raw material manufacturer's safety data sheet (SDS) and your local authority having jurisdiction to verify the most adequate fire suppression extinguisher for your specific storage or use.

Additional extinguishing notes: Carbon dioxide (CO2)

Always confirm extinguishing agents against the manufacturer SDS and your authority having jurisdiction before specifying a rental building fire-suppression package.

Storage & segregation guidance

Compliant storage and rental solutions for Potassium Hydroxide should account for its listed hazards (Corrosive to metals, category 1), climate control needs (20 C), and segregation requirements. Incompatibilities with Other Materials: Water, metals, acids. Hazardous Decomposition Products: Oxides of potassium.

Review NFPA 30 flammable liquid storage requirements and Fire-rated chemical storage rental when designing fire rating, containment, and building selection.

Properties: Physical State Solid Appearance Light yellow Odor Odorless Odor Threshold No information available pH 13.5 (0.1M) Melting Point/Range 360 °C / 680 °F Boiling Point/Range 1320 °C / 2408 °F Flash Point Not applicable

Matched to this chemical

Recommended storage solutions for Potassium Hydroxide

Fire rating, footprint, and containment options from the US Hazmat Rentals fleet — sized for compliant chemical storage.

  • Non-fire-rated0 HourChemical Storage Shipping

    BoxSAFE CX

    • Non Fire-Rated
    • 8 ft x 40 ft x 8' 5"
    • 50 Qty 55 Gallon Drums
    • 9 Pallets or Totes
    • 302 Square Feet storage
    View product
  • Non-fire-rated0 HourChremical Storage

    Non Fire-Rated

    • 0-Hour Fire-Rated
    • 8 ft x 40 ft
    • 57 Barrels
    • 55 Gal Storage Drums
    View product
  • Non-fire-rated0 HourChremical Storage

    Non Fire-Rate

    • 0-Hour Fire-Rated
    • 8 ft x 20 ft
    • 27 Barrels
    • 55 Gal Storage Drums
    View product

Material handling

How do you manage your bulk chemical storage?

US Hazmat Rentals buildings are designed around the primary storage formats teams use in the field — each path opens the matching storage solution on ushazmatrentals.com.

We have solutions designed for your workflow process needs.

Frequently asked questions

How should Potassium Hydroxide be stored?

Store Potassium Hydroxide in EPA-, OSHA-, and NFPA-compliant containment suited to its hazards (Corrosive to metals, category 1). Climate range guidance: 20 C. Compatibility notes: Incompatibilities with Other Materials: Water, metals, acids. Hazardous Decomposition Products: Oxides of potassium. US Hazmat Rentals provides compliant chemical storage buildings available for rental.

Is Potassium Hydroxide flammable?

Potassium Hydroxide is not flagged as flammable in this database (No). Still verify the SDS and store in compliant containment for its listed hazard class.

What hazard class is Potassium Hydroxide?

Potassium Hydroxide is listed as: Corrosive to metals, category 1. Acute oral toxicity Category 4 Skin Corrosion/Irritation Category 1 A Serious Eye Damage/Eye Irritation Category 1 Specific target organ toxicity (single exposure) Category 3 Target Organs - Respiratory system.

What fire suppression is recommended for Potassium Hydroxide?

Dry Chemical fire suppression is generally recommended for Potassium Hydroxide (KOH). *Please consult your raw material manufacturer's safety data sheet (SDS) and your local authority having jurisdiction to verify the most adequate fire suppression extinguisher for your specific storage or use.

Is compliant Potassium Hydroxide storage available for rent?

Yes. US Hazmat Rentals offers EPA-, OSHA-, and NFPA-compliant chemical storage buildings and containment that can be matched to Potassium Hydroxide. Request sizing and compliance guidance at https://ushazmatrentals.com/chemical-storage-quote-request/.