1. Special Provisions

49 CFR 172 Special Provision A189 (A-Codes)

These provisions apply only to transportation by aircraft.
CodeA189
DescriptionExcept where the defining criteria of another class or division are met, concentrations of formaldehyde solution:
  • a. With less than 25 percent but not less than 10 percent formaldehyde, must be described as UN3334, Aviation regulated liquid, n.o.s.; and
  • b. With less than 10 percent formaldehyde, are not subject to this subchapter.
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