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Hazards by class

Hazards by class. B ases. Precautions: Wear gloves Protect metals (cover with plastic ) Wipe off seal after each use before closing. Corrosive. DDC 01xx. White Label. Examples: 1 2 3 4. A cids. Precautions: Separate organic and inorganic Wear gloves

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Hazards by class

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  1. Hazards by class

  2. Bases Precautions: • Wear gloves • Protect metals (cover with plastic) • Wipe off seal after each use before closing Corrosive DDC 01xx White Label Examples: • 1 • 2 • 3 • 4

  3. Acids Precautions: • Separate organic and inorganic • Wear gloves • Protect metals (cover with plastic) • Wipe off seal after each use before • closing Corrosive DDC 02xx White Label Examples: (with cap color) • Acetic Acid—Brown • Phosphoric Acid—White • Hydrochloric Acid—Blue • Sulfuric Acid—Yellow • Nitric Acid—Red

  4. Oxidizers Precautions: • Keep away from combustible materials Oxidizing DDC 16xx Yellow Label Examples: • Sodium hypochlorite • Potassium permanganate • Peroxides • Perchlorates • Nitrates

  5. Flammables Precautions: • Keep away from oxidizers and ignition sources Flammable DDC 08xx Red Label Examples: • Many solvents • Acetone, ether, methanol, benzene • Phosphorus • Magnesium

  6. Reactive Precautions: • Keep well sealed • Protect against moisture and vibration • Isolate from atmosphere by storing under inert gas (Nitrogen) or liquid (oil) Reacts with Air Water Shock DDC 04xx, 12xx Yellow Label Examples: Water reactive: • Na/K/Li metal • Metal hydrides Shock reactive: • Organic peroxides • Heavy metal azides

  7. Inhalation Hazard Precautions: • Keep well sealed Toxic if inhaled DDC ##PH Blue Label Examples: • Methyl iodide • Methylamine • Thionyl chloride • Silica • Ammonia

  8. Toxic Precautions: • Do not swallow, touch, or inhale • Wash hands after handling Toxic if swallowed DDC 18xx Blue Label Examples: • Cyanides • Azides • Sulfides • DMSO • Chloroform

  9. Low Hazard DDC 05xx, 06xx Precautions: • Keep liquids below eye level Irritant Grey Label Orange Label Green Label Examples: • Halogen salts • Buffers • Chemicals with low reactivity (lots of examples)

  10. Radioactive Precautions: • Authorized users only! • Leave shielding in place • What about the testing / monitoring badges/ rings? DDC ##RA Examples: • 3H • 14C • 32P • 125I • 35S

  11. Biohazard Precautions: • Materials must be inactivated before disposal May also be: Toxic Harmful to environment Examples: • E. coli • S. cerevisiae • Salmonella • Viruses

  12. Mercury or Heavy Metal Precautions: • Materials must be disposed as hazardous waste Toxic Harmful to environment Examples: • Mercury • Cadmuim • Lead

  13. Carcinogen Precautions: • Do not swallow, touch or inhale • Use appropriate gloves Cancer causing Toxic Examples: • Arsenic • Beryllium • Benzene • Formaldehyde • Vinyl Chloride

  14. Reproductive Toxin Precautions: • Do not swallow, touch or inhale • Use appropriate gloves Toxic Examples: • Selenium/ Tellurium • Methylene chloride • Chloroform • Arsenic • Xylene

  15. Nanoparticle Precautions: • Do not swallow, touch or inhale • Use appropriate gloves • Keep well sealed Examples: • Au (gold) • Ag (silver) • Mesoporous silica • Iron oxide

  16. Time Sensitive Materials DDC ##PF Precautions: • Avoid metal caps, heat, light • Visually check for crystals • Test every 1, 3, 6 or 12 months • Dispose if > 80 ppm peroxides or > 2 yrs Peroxide formers Examples: • Diethyl Ether • Tetrahydrofuran (THF) • Dioxane

  17. Sensitive Materials Temperature sensitive store at proper temperature Light sensitive store in the dark Precautions: • Store in secondary containers to segregate hazards

  18. Sensitive to Humidity Some chemicals need to be kept • Dry • Store in dessicant to remove humidity. • Protect from moisture. • Moist • Store in overpack with wet towel. • Do NOT allow to dehydrate

  19. Pressure Difference Compressed Gas Pressurized materials Vacuum Risk of Projectiles DDC ##CG Precautions: Do not heat, cool, or attempt to open while under pressure Protect from impact • Use plastic netting to control glass shards if implosion • Apply grease to seal • Secure upright • Transport in a secure cart

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