Restricted Purchases

A few chemicals require pre-approval by EHS or pre-notification of procurement by the purchaser to EHS. These include:

  • Explosives (in any amount)
  • Pyrophorics
  • Water reactives
  • Toxic materials with an LD50 less than 5 mg/kg
  • Organo-mercury compounds with an LD50 less than 50 mg/kg or readily absorbed through the skin
  • Flammable gases
  • Toxic gases

Equipment that requires pre-notification of EHS includes:

  • Ethylene oxide sterilizers
  • Biosafety cabinets
  • Lasers (Class 3B or 4)
  • X-Ray Generating Devices

A complete list of restricted purchases can be found in the process document below, along with the applicable request forms to obtain a restricted item or chemical.

Document describing the types of equipment and chemicals that require notification to EHS and/or approval of the CESC before purchase

Form to be completed prior to purchase of a chemical on the restricted purchase list

Form to be completed prior to purchase of equipment on the restricted purchase list