If you ship small amounts of dangerous goods — aerosols, paints, cosmetics, cleaning chemicals, reagents — you have probably heard that “limited quantity” or “excepted quantity” rules can save you money and paperwork. That is true. It is also where a lot of ecommerce sellers and small manufacturers get into trouble, because the two terms describe different reliefs, with different quantity limits, different marks, and different rules by mode.
Here is how they actually compare under the DOT Hazardous Materials Regulations (49 CFR) and the IATA Dangerous Goods Regulations.
What is a limited quantity (LQ)?
A limited quantity is a hazardous material packaged in small inner packagings (bottles, cans, pouches) inside a strong outer package, within the quantity limits set for that material. For ground transport in the U.S., the limits live in 49 CFR 173.150 through 173.155 — for example, 173.150 covers Class 3 flammable liquids and 173.154 covers Class 8 corrosives. The inner-package limit depends on the material and packing group; the completed package is also capped by gross weight, commonly 30 kg (66 lb).
When your product qualifies, ground LQ shipments get significant relief. In general, limited quantities moved by highway or rail:
- Do not require UN specification packaging (a strong, non-bulk outer package is acceptable)
- Do not require hazard class labels on the package
- Do not require shipping papers when no other regulated function triggers them
- Do not count toward placarding
The package must display the limited quantity mark: the square-on-point diamond with black top and bottom corners.
Limited quantity by air is a different animal
Air changes everything. Under the IATA DGR, limited quantities move under “Y” packing instructions (Y341, Y960, and so on) with smaller quantity limits than ground, and most of the ground relief disappears. Air LQ packages still require:
- The proper shipping name and UN number marked on the package
- Hazard class labels
- A Shipper’s Declaration for Dangerous Goods in most cases
- The LQ mark with a “Y” in the center to show air eligibility
- Packaging capable of passing the drop and stack tests described in the DGR
A carton that legally rides a truck with nothing but an LQ diamond can be rejected at the airline counter — or worse, become an undeclared dangerous goods incident. If your fulfillment operation tenders to both ground and air carriers, your process has to distinguish the two.
What is an excepted quantity (EQ)?
Excepted quantities are much smaller — think milliliters and grams, not liters and kilograms. Under 49 CFR 173.4a and the corresponding IATA provisions (the “E” codes E1 through E5 shown in the dangerous goods list), each inner receptacle is limited to very small amounts (for many materials, 30 mL/30 g or less per inner, with a low cap on the total per package), and the packaging must pass specified integrity tests.
Properly prepared EQ packages get even broader relief than LQ: generally no hazard labels, no shipping papers or Shipper’s Declaration, and no UN specification packaging. The package must bear the excepted quantity mark — the red-hatched-border square — showing the hazard class and, if not marked elsewhere, the name of the shipper or consignee. By air, there is also a limit on the number of EQ packages per aircraft, and not every material or packing group is eligible: the E code in the DG list tells you whether EQ is allowed at all.
EQ is a great fit for sample vials, small reagent kits, and travel-size regulated products. It is not a loophole for full-size retail goods.
What LQ and EQ do NOT relieve you from
This is the part that generates fines. Even for limited and excepted quantities:
- Training is still required. Anyone performing a pre-transportation function — classifying, packaging, marking, offering — is a hazmat employee under 49 CFR 172.704 and must be trained. IATA has its own competency-based training requirement for air shipments. “It’s only limited quantity” is not a defense PHMSA accepts. Go Hazmat runs IATA DGR and DOT hazmat training online and on-site for exactly this gap.
- Classification is still your responsibility. You must correctly classify the material and confirm it qualifies for LQ or EQ under its entry in the hazmat table. Guessing from an SDS section heading is not classification.
- Packaging still has to be right. LQ requires combination packaging within the limits; EQ packaging must pass the required tests. Retail-ready cartons often need rework before they comply — our hazmat repacking service handles that regularly for importers.
- Incident reporting and general requirements of the HMR still apply.
When full regulation applies anyway
The reliefs vanish the moment you step outside the boundaries: quantities over the LQ inner or gross limits, materials with no LQ or EQ allowance (many PG I materials, most Table 1-type high-hazard classes), air shipments that do not meet the Y packing instruction, or vessel shipments that trigger IMDG documentation. Reverse logistics is a classic trap — returns consolidated into one big box can silently exceed LQ limits.
The South Florida wrinkle
Miami is a transshipment city. Freight that arrives by ground LQ frequently departs by air from MIA or by ocean through PortMiami — and at that handoff, the ground relief no longer covers the shipment. We see rejected cargo at MIA every week for exactly this reason. If your goods change modes in South Florida, have someone verify the downstream requirements before the truck leaves your dock; Go Hazmat’s mobile hazmat documentation team can prepare compliant DG declarations on-site when a shipment needs to convert from ground LQ to fully regulated air or ocean freight.
Frequently asked questions
Do I need hazmat training to ship limited quantities?
Yes. The limited quantity provisions relieve you from certain packaging, labeling, and documentation requirements, but not from training. Anyone who classifies, packages, marks, or offers limited quantity shipments is a hazmat employee under 49 CFR 172.704 and must have current general awareness, function-specific, safety, and security training. Air shipments additionally require training that meets IATA requirements.
What is the difference between the LQ mark and the EQ mark?
The limited quantity mark is a square-on-point diamond with black top and bottom corners; for air shipments it must contain a “Y” in the center. The excepted quantity mark is a square with a red hatched border that displays the hazard class of the contents and, if not shown elsewhere on the package, the name of the shipper or consignee. They are not interchangeable — each certifies compliance with a different set of provisions.
Can I ship limited quantities by air the same way I do by ground?
No. Ground limited quantity relief under 49 CFR does not carry over to air. Air LQ shipments must meet the IATA “Y” packing instructions, which impose smaller quantity limits, tested packaging, full marking and labeling, and in most cases a Shipper’s Declaration for Dangerous Goods. Many products that qualify for ground LQ do not qualify for air LQ at all.
