Chemical Hazards

• Fuming Acids
• Non-Fuming Acids
• Crystalline Acids
• Alkaline Materials
• Caustic Materials
• Salts

Explosives

• Type 1 – High – Mass explosion hazard: TNT/Ammo/Fire wks
• Type 2 – Low Order: Fireworks/C-4/Blasting caps
• Shock Sensitive: Nitroglycerin
• Chemicals or Combinations
• Metal Dusts

Flammable/Combustible Liquids

• A flammable liquid (29 CFR 1910.106(a)(19)) has a flash point (CC test) below 100ºF (37.8ºC). Gases can travel considerable distances to a source of ignition and flash back to the flammable liquid.
• A Combustible Liquid: A combustible liquid (29 CFR 1910.106(a)(19)) has a flash point at or above 100ºF (37.8ºC), but below 200ºF (93.3ºC).

Explosive Range

• LEL and UEL
• Too rich or too lean

Gases, Flammable, Toxic

• Asphyxiants: C02; He; N2 CH4(Methane)
• Propane (LPG).
• Toxic Gases: H2S; CO

Flammable Solids: Matches: Self-heating materials, those that exhibit spontaneous ignition or heat themselves to a temperature of 200 deg.C (392 deg.F) during a 24-hour test period. (This behavior is called spontaneous combustion

Reactive Chemicals

• Water Reactive
• Exothermic/Endothermic
• Metal Hydrides, Hydro: gas reacts with metal
• Air Reactive (Pyrophoric) – 5 min. exposure
• Acid Reactive

Etiological: any infectious agent known or suspected to cause disease in humans.

Oxidizers

Radioactive

Poisons/Toxins

Corrosives

• Caustics
• Acids