Get the paperwork right, every time

Shipping a hazardous material in an IBC tote is not like shipping water. The moment your product is a regulated dangerous good, you step into DOT hazardous materials rules, UN performance packaging standards, and a documentation trail that inspectors and carriers will check. Getting it wrong risks rejected shipments, fines, and, far worse, an uncontrolled release. This is an overview of what you must know. It is not a substitute for the regulations or professional guidance; verify everything against the current rules for your specific material.

UN-Rated Totes Are the Starting Point

You cannot ship a regulated product in just any tote. It must be a UN performance-rated IBC, which for a composite HDPE tote carries a UN31 code family in its marking. That marking is the tote's certification that it passed drop, stack, vibration, and pressure testing for a defined range of products.

• The marking encodes the packaging type, packing group, design density, test pressure, year of manufacture, and country of certification.
• The tote is only authorized for products within the tested parameters, you cannot exceed the rated specific gravity or pressure.
• A food-grade or general-purpose tote with no UN rating cannot legally carry a regulated hazmat, no matter how sturdy it looks.

When you need certified units, our new IBC totes are available UN-rated, and we can supply rated reconditioned totes where the certification and retest status are documented. Match the rating to your product, our grades guide explains the differences.

Decode the Marking, and Read the Closure Instructions

Two documents govern legal use of a UN31 tote and people ignore both at their peril.

• The UN marking on the tote tells you what it is certified for. Learn to read it, and confirm it matches your product and packing group.
• The closure instructions from the manufacturer specify exactly how the tote must be closed: which gaskets, which torque, which cap. Compliance requires closing the tote precisely per those instructions.

A perfectly good UN-rated tote becomes non-compliant the instant it is closed wrong. The closure instructions are part of the certification, not a suggestion.

Keep the closure instructions on file and make sure whoever fills and seals the tote follows them every time.

The Retest Schedule: 2.5 and 5 Years

UN-rated IBCs do not stay certified forever. They carry a periodic inspection and retest requirement:

• An internal and external inspection roughly every 2.5 years, and
• A more thorough inspection plus leakproofness (and where applicable, pressure) test every 5 years.
• A tote that is past its retest date cannot be filled and offered for transport of regulated goods until it is re-tested and re-marked.

This is one of the most common findings in the field: a valid tote that simply aged out of its retest window. Track the dates on every rated tote in your fleet. Our reconditioning service can inspect, test, and requalify eligible totes so certified units stay in rotation instead of being scrapped.

Marking, Labeling, and Placarding the Shipment

Beyond the tote's UN rating, the shipment itself must be communicated to everyone who handles it:

• Proper shipping name and UN/ID number marked on the package.
• Hazard class labels matching the material.
• Placards on the transport vehicle when quantities require them.
• Orientation and any handling marks required for the product.

Get the classification right first, the proper shipping name, hazard class, and packing group come from the material's profile and drive everything downstream.

Shipping Papers, Training, and the Carrier

Documentation and people are as regulated as the packaging:

• Shipping papers and hazardous materials manifest must accompany the load with the required emergency response information.
• Anyone who prepares, offers, or transports hazmat must be trained and, in many cases, certified; drivers often need a hazmat endorsement.
• The carrier must be authorized to move that hazard class, and securement rules still apply on top of hazmat rules.
• Keep records, training, retest, and shipping documentation all need to be retained.

Because the transport securement basics overlap here, it is worth reading them alongside this, our transport service handles compliant hazmat moves and can coordinate the paperwork.

Build a Compliance Checklist

Before any regulated tote leaves your yard, confirm:

• Product is properly classified (shipping name, class, packing group).
• Tote is UN31-rated and authorized for this product and density.
• Tote is within its 2.5 and 5-year retest dates.
• Tote is closed per the closure instructions.
• Package is marked, labeled, and placarded correctly.
• Shipping papers are complete and personnel are trained.

Hazmat shipping punishes shortcuts and rewards discipline. The rules are detailed, but they are learnable, and a good tote supplier makes it easier by providing certified, in-date, properly documented units. If you need rated totes, retest and requalification, or a compliant hazmat haul, start at contact, and for lower-hazard or non-regulated products, our standard used totes may be all you need.