— Air Shipping Requirements

Class 3

Flamm. liquid

Packing Group PG I

QUICK GLANCE

UN 1133 (Adhesives) PG I is a dangerous product classified as Flammable Liquid (Class 3). It presents a high degree of danger (Packing Group I). It can be shipped on passenger aircraft, up to 1 L net per package, and on cargo aircraft only, up to 30 L net per package — cargo aircraft allows a higher net quantity. It qualifies for the Excepted Quantity exemption (up to 300 mL net per package). Specific country restrictions, airline operator restrictions, and special provisions also apply - these override the standard ICAO/IATA rules.

QUICK GLANCE

UN 1133 (Adhesives) PG I is a dangerous product classified as Flammable Liquid (Class 3). It presents a high degree of danger (Packing Group I). It can be shipped on passenger aircraft, up to 1 L net per package, and on cargo aircraft only, up to 30 L net per package — cargo aircraft allows a higher net quantity. It qualifies for the Excepted Quantity exemption (up to 300 mL net per package). Specific country restrictions, airline operator restrictions, and special provisions also apply - these override the standard ICAO/IATA rules.

PROPER SHIPPING NAME

Adhesives

containing flammable liquid

PROPER SHIPPING NAME

Adhesives

containing flammable liquid

PRIMARY

HAZARD CLASS

3

PRIMARY
DANGER

Flamm. liquid

SUBSIDIARY
HAZARD CLASS

SUBSIDIARY
DANGER

PACKING
GROUP

PG I

PRIMARY

HAZARD CLASS

3

PRIMARY
DANGER

Flamm. liquid

SUBSIDIARY
HAZARD CLASS

SUBSIDIARY
DANGER

PACKING
GROUP

PG I

Passenger & cargo aircraft requirements for

Passenger aircraft carry paying passengers, with cargo in the lower hold. Cargo aircraft (freighters) carry freight only, with no passengers on board.

Choosing which aircraft type a shipment of UN 1133 (Adhesives) PG I can use is one of the first important decisions in the process.

Passenger aircraft offer more routes, more frequent flights, and generally lower costs, but they allow smaller quantities per package. Cargo-only aircraft allow larger quantities, but they have fewer flights, longer transit times, and higher costs.

Some dangerous goods are restricted to either passenger aircraft or cargo-only aircraft, but UN 1133 (Adhesives) PG I is not. It can be transported on both types of aircraft:

  • Passenger aircraft 💺 — PERMITTED

  • Cargo aircraft ✈️ — PERMITTED

“Permitted” does not mean the substance can be carried by air without restriction. It is still a dangerous good and must comply with strict packing, packaging, marking, labelling, documentation and quantity rules imposed by IATA/ICAO, as well as by individual countries and airline operators.

excepted & limited quantity provisions for

Exemptions allow you to ship smaller quantities under simplified rules, with reduced packaging, marking, and documentation compared to a full shipment. They don’t remove the hazard classification—only the amount of compliance work required.

EXCEPTED QUANTITY

  • Max net quantity — 300 mL

  • Check carefully the inner packaging strict quantity limits

permitted packaging for

Here are the permitted packaging configurations for UN 1133 (Adhesives) PG I:

  • Passenger aircratft — only combination packaging (inner + outer packaging)

  • Cargo aircraft — single packaging, combination or composite packaging

  • Excepted quantity exemption — only combination packaging (inner + intermediate + outer packaging)

On passenger aircraft and cargo aircraft, multiple outer packaging types (materials and shapes) are permitted provided each is tested and certified to the following requirements:

UN Packing Group I (performance standards)

Packaging types and packaging systems (single, combination, composite packagings) varie depending of the packaging instructions, special provisions, country and airline restrictions.

marks & labels for

Labels and marks communicate hazards and shipping methods to ground handlers, airline crew, and emergency responders at a glance—without anyone needing to open the package or check the paperwork first.

Marking

  • Packaging specification (packaging manufacturer)

  • Consignor

  • Consignee

  • UN/ID number

  • Proper shipping name

  • Max net quantity per package

  • Excepted quantity (if applicable)


Labelling

  • Class 3 — Flammable liquid

  • Cargo Aircraft Only (if applicable)

  • Package orientation




Other marking and labelling requirements must be applied for overpack, environmentally hazardous substances, lithium ion batteries, magnetized materials.

special provisions for

The ICAO/IATA Dangerous Goods Regulations include several hundred special provisions —additional requirements assigned to specific UN numbers, beyond the standard packing instructions.

When a special provision applies, it overrides the packing instruction and quantity rules shown above. It may add packaging conditions, restrict a shipping method that would otherwise be allowed, require extra documentation, or impose limits not mentioned in the general rules. 

The packing instruction alone is never the full picture. It must cross-reference with the special provisions that apply to a specific UN/ID number. 

UN 1133 (Adhesives) PG I is subject to 1 special provision.

State variations for

Some countries impose dangerous goods requirements that are stricter than the ICAO/IATA regulations for goods entering, leaving, or transiting their territory.

When country restrictions apply to a specific UN/ID number, it overrides the standard rules shown above — a country may limit quantities, require additional approval, or prohibit a shipping method that ICAO/IATA would otherwise permit.

UN 1133 (Adhesives) PG I is subject to restrictions by 3 countries.

operator variations for

Individual airline operators may impose dangerous goods requirements that are stricter than ICAO/IATA regulations. An airline operator may refuse carriage entirely, reduce the allowable quantity below the standard limits, or impose additional handling requirements. 

Where an airline operator restriction applies, it overrides the general rules shown above for that specific carrier.

UN 1133 (Adhesives) PG I is subject to restrictions by 36 airlines.

Why is dangerous on an aircraft?

UN 1133 (Adhesives) PG I describes liquids that catch fire extremely easily. Packing Group I means the liquid has a very low flash point and boils at a very low temperature, so it gives off flammable vapours even at everyday temperatures. On an aircraft, this creates a serious ignition risk from heat, sparks, static electricity, or a leaking package, and a fire could start and spread quickly inside the cargo hold.

Because aircraft cargo holds have limited oxygen and rely on fire-suppression systems, fires from highly flammable liquids are much harder to control mid-flight than on the ground, and could threaten the aircraft's structure or safety systems before landing. For this reason, UN 1133 (Adhesives) PG I is normally heavily restricted, requiring strict packaging, quantity limits, and labelling.

Frequently asked questions

What is UN 1133?

What are the packing instructions for UN 1133?

What packing group UN 1133 assigned to?

Can UN 1133 be shipped on a passenger aircraft?

Can UN 1133 be shipped on a cargo-only aircraft?

Is UN 1133 eligible for limited quantity provisions?

Is UN 1133 eligible for excepted quantity provisions?

Is UN specification packaging required for UN 1133?

Is shipper's declaration required for UN 1133?