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  1. Special Provisions

Information only — not personal consulting. Verify against current official regulations. Help and scope

  1. HazMat Tool
  2. 49 CFR 172.102 Special Provisions
  3. T-Codes
  4. T21
T21T-Codes

Excerpts from 49 CFR §172.102. Verify against the current official rule text before relying on them.

Provision text

Minimum test pressure (bar)10
Minimum shell thickness10 mm
Pressure-relief requirementsNormal
Bottom opening requirementsProhibited for liquids. § 178.275(d)(2).

Materials referencing this code

  • UN 2870 - Aluminum borohydride or Aluminum borohydride in devices
  • UN 1854 - Barium alloys, pyrophoric
  • UN 2881 - Metal catalyst, dry
  • UN 3392 - Organometallic substance, liquid, pyrophoric
  • UN 3394 - Organometallic substance, liquid, pyrophoric, water-reactive
  • UN 3391 - Organometallic substance, solid, pyrophoric
  • UN 3393 - Organometallic substance, solid, pyrophoric, water-reactive
  • UN 2447 - Phosphorus white, molten
  • UN 1383 - Pyrophoric metals, n.o.s., or Pyrophoric alloys, n.o.s
  • UN 3200 - Pyrophoric solid, inorganic, n.o.s
  • UN 3254 - Tributylphosphane
  • UN 2008 - Zirconium powder, dry

Back to all T-Codes