Chemical Storage and Inventories

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Chemical Storage and Inventories

• MCPS Science Safety Training
• February 12, 2003

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Its the Law

• Maryland Code requires schools to maintain
  records of instructional chemicals.
• Montgomery County Fire Marshall may ask to see
  your schools chemical inventory MSDSs during
  the biannual inspection.
• Montgomery County Fire Marshall may require you
  to demonstrate that you are using the safest
  methods to store, use and dispose of laboratory
  chemicals.

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Chemical Inventory Should Provide

• Information about how a chemical should be stored
  in relationship to other chemicals.
• Information about the hazardous character (if
  any) of the chemical.
• Suggested disposal method.
• Amount currently on hand.
• A reorder minimum.
• A means of identifying unused chemicals.

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Safe Chemical Storage

• Involves more than simply recording chemical
  data.
• Requires careful planning.
• Requires awareness of potential storage hazards.

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Start with Facility Evaluation

• Chemical storage area should be separate and
  securable with vapor barrier door.
• Off limits to all students.
• Shelving secured to walls floors.
• Shelves with lips to prevent roll off.
• No shelf storage above eye level.
• Shelving above work area should be free of
  chemicals and loose materials.
• Storage room should be labeled to identify
  hazardous nature of products stored within.

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Facility Evaluation continued

• Should have 2 exits. Exits free of hazardous
  materials.
• Should have emergency panic button inside storage
  room.
• Smoke detectors should be installed.
• Eye wash fire blanket within 25 feet.
• Ventilation separate from classroom ventilation.
• Ventilation at 4 changes/hour minimum.

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Facility Evaluation continued

• Spill control should be on hand.
• Mercury
• Neutralizing chemicals
• Dry sand/vermiculite
• Separate proper acid flammable cabinets with
  locks resistant to chemical corrosion.
• Area free of ignition sources.
• Use explosion-proof, not standard, refrigerator.
• Post emergency phone numbers. Phone nearby.
• Supply appropriate chemical first aid materials.

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Use Flinn Chemical Storage Plan

• INORGANICS
• Metals, Hydrides
• Acetates, Halides, Iodides, Sulfates, Sulfites,
  Thiosulfates, Phosphates, Halogens
• Amides, Nitrates (except Ammonium Nitrate),
  Nitrites, Azides
• Hydroxides, Oxides, Silicates, Carbonates, Carbon
• Sulfides, Selenides, Phosphides, Carbides,
  Nitrides
• Chlorates, Bromates, Iodates, Chlorites,
  Hypochlorites, Perchlorates, Perchloric Acid,
  Peroxides, Hydrogen Peroxide
• Arsenates, Cyanides, Cyanates
• Borates, Chromates, Manganates, Permanganates
• Acids (except Nitric--isolated by itself)
• Sulfur, Phosphorus, Arsenic, Phosphorus Pentoxide

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Use Flinn Chemical Storage Plan

• ORGANICS
• Acids, Amino Acids, Anhydrides, Peracids
• Alcohols, Glycols, Sugars, Amines, Amides,
  Imines, Imides
• Hydrocarbons, Esters, Aldehydes, Oils
• Ethers, Ketones, Ketenes, Halogenated
  Hydrocarbons, Ethylene Oxide
• Epoxy Compounds, Isocyanates
• Peroxides, Hydroperoxides, Azides
• Sulfides, Polysulfides, Sulfoxides, Nitriles
• Phenols, Cresols
• Dyes, Stains, Indicators

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Chemical Storeroom Management

• Place one person in charge.
• All teachers responsible for storeroom
  management.
• Provide Flinn Storage Plan map of room.
• Make plan easy to locate items.
• Designate label shelves and areas by compatible
  families.

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Inventorying Chemicals

• 2 people arranger, recorder.
• Start in one area.
• Clean, label and keep neat as you go.
• Inventory as a chemical is moved.
• Remove excess chemicals.

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Chemical Inventory Data

• Chemical Name
• CAS (Chemical Abstract Service)
• Class
• Compatible Family
• Hazardous Code
• Disposal Code
• Shelf Location
• R1S2R2
• Room 1, shelf 2, row 2
• Approximate amount on hand
• Minimum amount for reorder
• MSDS

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Some Storage Policies

• Only keep chemicals that are for instruction.
• Do not store chemicals for more than 2 years.
• Do not order excess.
• Use original labels and containers.
• Follow proper disposal procedures.

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