Stanford University

Documenting SOP review and Prior Approval

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Last updated: December 20, 2022
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How to Use

Principal Investigators/supervisors use this form to give prior approval for chemical usage involving the following restricted chemicals:

  • Toxic gases regulated by Santa Clara County (e.g. diazomethane, hydrogen cyanide, hydrogen fluoride (anhydrous), and nickel carbonyl)
  • Dimethylmercury
  • Chemicals classified as Department of Transportation (DOT) Division 1.1 explosives (e.g., picric acid, 2,4-dinitrophenylhydrazine (DNPH), ammonium perchlorate)
  • Tert-butyllithium
  • Hydrofluoric acid
  • Tetramethylammonium Hydroxide
  • Procedures with “high” and “unacceptable” risk ratings on a self-conducted Laboratory Risk Assessment

Section 5.2 of the Chemical Hygiene Plan (CHP) lists other options for granting and documenting prior approval.

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