Download DOT’s guide on using the Hazardous Materials regulations here:
https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/docs/training/hazmat/28426/how-use-hmr-final-web.pdf

49 CFR Part 173 Shippers – General Requirements for Shipments and Packagings

Subpart A General  https://www.law.cornell.edu/cfr/text/49/part-173/subpart-A
Subpart B Preparation of Hazardous Materials for Transportation
https://www.law.cornell.edu/cfr/text/49/part-173/subpart-B
Subpart D Definitions, Classifications, Packing Group Assignments and Exceptions
https://www.law.cornell.edu/cfr/text/49/part-173/subpart-D
Subpart F Bulk Packaging for Hazardous Materials Other than  Class 1 and Class 7
https://www.law.cornell.edu/cfr/text/49/part-173/subpart-F

49 CFR Part 178 Specifications for Packagings

Subpart N IBC Performance Oriented Standards

178.700 Purpose, Scope and Definitions https://www.law.cornell.edu/cfr/text/49/178.700
178.702 IBC Codes https://www.law.cornell.edu/cfr/text/49/178.702
178.703 Marking of IBCs https://www.law.cornell.edu/cfr/text/49/178.703
178.704 General IBC Standards https://www.law.cornell.edu/cfr/text/49/178.704
178.707 Standards for composite IBCs https://www.law.cornell.edu/cfr/text/49/178.707

Subpart O Testing of IBCs https://www.law.cornell.edu/cfr/text/49/part-178/subpart-O

49 CFR Part 180 Continuing Qualification and Maintenance of Packagings

Subpart D Qualification and Maintenance of IBCs

180.350 Applicability and definitions https://www.law.cornell.edu/cfr/text/49/180.350
180.351 Qualifications of IBCs https://www.law.cornell.edu/cfr/text/49/180.351
180.352 Requirements for retest and inspection of IBCs https://www.law.cornell.edu/cfr/text/49/180.352