Chemical Incompatibilities

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Presentation transcript:

Chemical Incompatibilities

Why is recognizing chemical incompatibilities so important? Storing incompatible chemicals together can result in harmful gases/vapors, heat, fire and explosions

Major groups of incompatibles Acids and bases Oxidizers and flammable liquids Water reactive and aqueous/corrosive materials Solution: segregation or secondary containment

Acids and Bases Acids Bases Nitric acid Sulfuric acid Phosphoric acid Hydrochloric acid Sodium hydroxide Potassium hydroxide Ammonium hydroxide Imidazole

Oxidizers and Flammables 30% (or greater) hydrogen peroxide Silver nitrate Ammonium persulfate Potassium permanganate Nitric acid Ethanol Glacial acetic acid Propanol Acetone Xylene Methanol

Water Reactive and Aqueous/Corrosive Sodium Lithium Lithium borohydride Sodium hydride Fuming nitric acid Concentrated sulfuric acid Concentrated phosphoric acid

Incompatible Chemical Storage Best option is in separate storage cabinets or shelves Secondary containment is the next best option

Incompatible Chemical Storage Includes refrigerators and other storage locations for chemicals

Chemical Storage Reminder Chemicals can expire (e.g. ethyl ether) Important to keep an eye on container Make note of date received Observe expiration dates

Can you spot the mistake?

Can you spot the mistake? Glacial Acetic Acid: flammable! Flammable liquid can’t be stored with acids (HCl) unless it’s in a secondary container

Can you spot the mistake?

Can you spot the mistake? Hydrogen Peroxide: oxidizer! Oxidizers and flammables stored in fridges/freezers must be in secondary containers