Hazard class · Division guide

Oxidizer (Class 5.1) Storage

Oxidizers can intensify fire or cause combustible materials to ignite more readily. They need strict segregation from fuels, solvents, and organic materials.

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Class, Division, and GHS meaning

DOT Class 5 covers oxidizing substances and organic peroxides. Division 5.1 is oxidizers (solids/liquids that yield oxygen). GHS “Oxidizing liquids/solids Category …” labels describe relative oxidizing strength.

Storage implications for rental buildings

Use dedicated oxidizer-aware storage, keep combustible packing and flammable liquids out of the same compartment unless a reviewed segregation plan allows it, and prefer buildings with secondary containment for liquid oxidizers.

Flammable vs non-flammable within this class

Chemicals in this category (17)

Mapped from free-text hazard class values in Chemical DB. Always verify against the manufacturer SDS.

Ammonium Dichromate(NH4)2Cr2O7Oxidizer: Division 5.1
Flammable hazardFlammable Storage
Ammonium NitrateNH4NO3Oxidizer: Division 5.1
Non-flammableNon-Flammable Storage
Ammonium PerchlorateNH4ClO4Oxidizer: Division 5.1
Non-flammableNon-Flammable Storage
Ammonium PermanganateNH4MnO4Oxidizer
Non-flammableNon-Flammable Storage
Arsenic TrisulfideAs2S3Oxidizer (Division 5.1)
Flammable hazardFlammable Storage
Barium ChlorateBa(ClO3)2Oxidizer (Division 5.1)
Flammable hazardFlammable Storage
Chromyl ChlorideCrO2Cl2Category 1 Oxiziding Liquids
Non-flammableNon-Flammable Storage
Nitric Acid, >40%HNO3Oxidizing Liquids: Catergory 3
Flammable hazardFlammable Storage
Nitric Acid, FumingHNO3oxidizing Liquids: Catergory 3
Flammable hazardFlammable Storage
Potassium ChlorateKClO3Oxidizing Solids, Category 1
Non-flammableNon-Flammable Storage
Potassium PerchlorateKClO4Oxidizing Solids Category 1
Non-flammableNon-Flammable Storage
Potassium PeroxideK2O2Oxidizing Solids Category 2 Skin corrosion Category 1A
Non-flammableNon-Flammable Storage
Sodium ChlorateNaClO3Oxidizing agents Category 1
Non-flammableNon-Flammable Storage
Sodium ChloriteNaClO2Oxidizing solids (Category 1)
Non-flammableNon-Flammable Storage
Sodium PerchlorateNaClO4Oxidizing solids Category 1
Non-flammableNon-Flammable Storage
Sodium PeroxideNa2O2Oxidizing solids Category 1
Non-flammableNon-Flammable Storage
Trichloroisocyanuric AcidC3Cl3N3O3Oxidizing solids Category 2
Flammable hazardFlammable Storage