The following hazardous and dangerous items require special procurement procedures. When shopping for these items, coordinate with the authorized person in your DLC or MIT’s authorized purchasing agent and make sure to purchase from the appropriate source.
Material Requirement
Radioactive materials Follow the requisition and delivery procedure outlined by the MIT EHS Radiation Protection Program.
Controlled substances (drugs) MIT person(s) who have been assigned DEA Registrations by the U.S. Drug Enforcement Agency must submit two copies of DEA Form 222 with all requisitions. See Purchase a Controlled Substance. 
Ethyl alcohol (tax-free alcohol) Must be purchased from MIT's Preferred Scientific Supplier and the requisition must be signed by a member of the Institute community with the title Department Head, Laboratory Director, Professor, M.D., or Pharmacist.
Select agent toxins: abrin, botulinum, neurotoxins, clostridium perfringens epsilon toxin, conotoxins, deacetoxyscirpenol, ricin, saxitoxin, shigatoxin, shiga-like ribosome inactivating proteins, staphylococcal enerotoxins, tetrodotoxin, T-t toxin Must be purchased by the MIT EHS Biosafety Program.
Highly toxic chemicals: arsenic trioxide, chlorine, hydrogen cyanide, nitrous oxide, phosgene, potassium cyanide (analytical reagent and purified), sodium arseate (analytical reagent), sodium cyanide (analytical reagent) Requests for the chemicals above must be approved by a member of the Institute community with the title Department Head, Laboratory Director, Professor, M.D., or Pharmacist. See Purchase Highly Toxic or Restricted Chemicals.
Nitrous oxide gas Must be purchased from MIT's Preferred Gas Supplier.
Explosives The requisition must be made by a member of the MIT community who meets the following criteria: holds a valid permit from the Massachusetts State Fire Marshall and the local fire department for use, storage, and handling; has cleared a background check by the U.S. Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF), and holds a valid ATF permit; and for Class A and Class B explosives, a valid Certificate of Competency from the Massachusetts State Fire Marshall.
Liquefied petroleum gas (LPG) The requisition must be made by a member of the MIT community who holds a valid permit from the local fire department.
Live animals, animal tissues, body fluids (except sera) Must be purchased by the MIT Division of Comparative Medicine (DCM).
Precious metals, including scraps bearing precious metals and items containing recoverable quantities of precious metals: silver, gold, platinum, palladium, rhodium, iridiu, osmium, ruthenium The requisition must assign G/L 420296 (Precious Metals) and must state either: "Precious Metal Required for Federal Contract or Grant" and include contract or grant number; or "Precious Metal Required for Institute Purposes".