CFR › Title 49 › Part 173 › §173.32149 CFR §173.321Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkEthylamine must be packaged as follows:(a)In 1A1 drums which meet Packing Group I performance level requirements.(b)In specification cylinders as prescribed for any compressed gas except acetylene.