U.S. Hazmat Regulations

The federal rulebook every hazmat shipper must follow. Covers all six Part 172 obligations, from shipping papers to the 24-hour emergency phone number.

• All six Part 172 requirements explained
• Fully regulated vs. limited quantity shipments
• PHMSA penalties and the real cost of non-compliance

Before you ship, you may need to register with PHMSA. This guide covers who must register, current fees, how to file, and what registration does not cover.

• Who must register, and who is exempt
• Registration fees and filing timeline
• Registration vs. Part 172 compliance: the distinction that matters

Small shipments of certain hazmat may qualify for reduced requirements under the limited quantity exception. Understand the rules before assuming you're covered.

• Quantity limits by hazard class
• Packaging and marking requirements that still apply
• When an emergency number still applies

Every SDS Section 1 must include an emergency telephone number. This guide explains the OSHA obligation, how it differs from the DOT shipping paper requirement, and the penalties for non-compliance.

• Who must have an SDS and what Section 1 requires
• OSHA SDS obligation vs. DOT shipping paper obligation
• Penalty exposure by industry and enforcement trends