HAZARD CLASSES
Class 1:Explosive
Class: 1.1, 1.2, 1.3 
Class:1.4 
Class: 1.5 
Class: 1.6
Thermodynamically unstable material. Explosion caused by shock or chemical reaction.
Follow manufacturer's recommendation. Discard before expiration date. Store minimum quantities.
Class 2: Gases :
Flammable Gas
Class 2.1
Gas with a flash point less than 1400 F. Ignites easily, burns rapidly. Store away from ignition sources and oxidizers. Secure with a double chain to prevent falling. Store oxygen away from flammable gases. Check connections regularly to avoid leaking.
Non Flammable Gas
Class 2.2
Non-flammable, purified gas in a pressurized tank. Tank rupture, fire, toxic atmosphere, oxygen displacement. Store upright, secure with a double chain to prevent falling. Check connections regularly to avoid leaking.
Inhalation Hazard
Class 2.3
Class 3: Flammable Liquid
Class 3
Liquid with a flash point less 1400 F. Ignites easily, burns rapidly. Store in flammable storage cabinet, away from ignition sources and oxidizers. Quantities should not exceed 10 gallons.
Class 4: Flammable Solid
Class 4.1
Solid that burns readily. Ignites easily, burns rapidly. Store in flammable storage cabinet, away from ignition source and oxidizers.
Class 5.1 Oxidizer
Class 5.1
Agents that react with reducible material to initiate or promote combustion.Fire or explosion.Store away from organics and flammables. Do not store directly on wooden shelves or paper. Store chlorine separately from acids.
Class 5.2 Organic Peroxide
Class 5.2
Any organic compound that forms unstable peroxides when exposed to air.Explosion resulting from formation of concentrated peroxide crystals.Dispose before expiration date. If there is no marked expiration date, label with receipt date and maintain for no more than 1 year or 6 months after opening.
Class 6 Poison -Toxic - Highly Toxic
Class 6.1 - PG I or II
Chemicals that cause damage to target organs (liver, lungs, reproductive system, etc.) if inhaled, ingested, or absorbed through the skin. Toxic chemicals have an LD50 of 50 - 500 mg/kg, single oral dose for rats. Highly toxic chemicals have an LD50 of < 50 mg/kg, single oral dose for rats.Acute or toxic effects that may be local, systemic, or both.Store in a secure, sealed container below shoulder level. Use only in designated areas. Store away from incompatible.
Class 7: Radioactive
Class 7
For a shipment of radioactive materials requiring supplemental operational procedures, the shipper must furnish the master or person in charge of the vessel a copy of the necessary operational instructions.
Class 8: Corrosive
Class 8
Each package required to have a Class 8 (corrosive) label thereon being transported on a vessel must be stowed clear of living quarters, and away from foodstuffs and cargo of an organic nature.
Organic Acids -Compound with pH of 1-7, containing carbon.Segregate from mineral acids, oxidizing acids and bases.
Inorganic Acids -Compound with pH of 1-7, not containing carbon.Segregate from organic acids, oxidizing acids and bases.
Caustics -Compound with pH of 7-14.Tissue damage, violent reactions with strong acids.Segregate from mineral acids, organic acids, and oxidizing acids.
Class 9: Miscellaneous
Class 9
Water Reactive -Reacts violently when exposed to water producing heat or toxic gases.Store away from water, including sprinkler heads, sinks and drains, per manufacturers instructions.
Pyrophoric -Ignites spontaneously in air.Store under inert atmosphere per manufacturers instructions.
Carcinogen -Chemicals that cause cancer in humans or animals models.Carcinogenesis.Store in a secure, sealed container below shoulder level. Use in only designated areas with approved controls. Store away from incompatible.
Cryogen -Liquefied or solidified gases at low temperatures. -Tissue damage (frost bite), oxygen displacement, tank rupture.Store in approved containers. Store in well ventilated areas. (Do not store dry ice in cold rooms.) Design transfer lines such that liquids cannot be trapped in a non-ventilated part of the system.
Sensitizer - Substances that can cause an allergic reaction of the skin or respiratory system. Allergic reaction. Store in secure container taking into account other hazards associated with the substance
Controlled Substances -Substances specifically controlled by federal law.Store in a secure, locked location. Maintain a current inventory.