chemical incompatibilities. why is recognizing chemical incompatibilities so important? storing...
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• Nitric acid• Sulfuric acid• Phosphoric acid• Hydrochloric acid
Bases• Sodium hydroxide• Potassium hydroxide• Ammonium hydroxide• Imidazole
Oxidizers and Flammables
Oxidizers• 30% (or greater) hydrogen
peroxide• Silver nitrate• Ammonium persulfate• Potassium permanganate• Nitric acid
Flammables• Ethanol• Glacial acetic acid• Propanol• Acetone• Xylene• Methanol
Water Reactive and Aqueous/Corrosive
Water Reactive• Sodium• Lithium• Lithium borohydride• Sodium hydride
Aqueous• 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