UN 2031 - Nitric acid, other than red fuming, with more than 20 % and less than 65 % nitric acid intended for use in sterilization devices only, may be transported on passenger aircraft irrespective of the indication of "forbidden" in columns 10 and 11 of Table 3-1 provided:
a) each inner packaging contains not more than 30 mL;
b) each inner packaging is contained in a sealed leak-proof intermediate packaging with sufficient absorbent material capable of containing contents of the inner packaging;
c) intermediate packagings are securely packed in an outer packaging of a type permitted by Packing Instruction 855 meeting the Packing Group I performance requirements of Part 6; Chapter 1;
d) the maximum quantity of nitric acid in the package does not exceed 300 mL; and
e) reference to Special Provision A212 is made on the dangerous goods transport document as required by Part 5;4.1.5.8.
