UN1075 liquefied petroleum gas table entry.

Where UN1075 sits in the table

The Hazardous Materials Table in 49 CFR 172.101 is where the Department of Transportation fixes a proper shipping name, hazard class, identification number and the codes that point to packaging, air-quantity and vessel-stowage rules. UN1075 has one row: "Petroleum gases, liquefied or Liquefied petroleum gas". In the table the word "or" in italics means you may use either term as the proper shipping name, The row carries no symbol in column 1.

Because UN1075 is a Class 2 gas it has no packing group, and column 5 is empty. The regulation says so directly: "Class 2, Class 7, and Division 6.2 do not have packing groups." Division 2.1 is defined in 173.115(a) as a gas at 20 degrees C (68 degrees F) or less and 101.3 kPa that is ignitable at 13 percent or less by volume in air, or has a flammable range with air of at least 12 percent.

The full row from the eCFR copy of the table, current through October 29, 2026 and read November 2, 2026, is below. Every value is copied from 49 CFR 172.101; the last column is the regulation's own explanation of the column.

The 172.101 row, column by column

How the regulation defines the hazard class

173.115(a) says, abridged: "a flammable gas (Division 2.1) means any material which is a gas at 20 °C (68 °F) or less and 101.3 kPa (14.7 psia) of pressure (a material which has a boiling point of 20 °C (68 °F) or less at 101.3 kPa (14.7 psia)) which is ignitable at 101.3 kPa (14.7 psia) when in a mixture of 13 percent or less by volume with air, or has a flammable range at 101.3 kPa (14.7 psia) with air of at least 12 percent regardless of the lower limit."

Special provisions on this entry, in the rule's words

Column 7 does not explain itself; each code is defined in 172.102. These are the definitions as printed in the eCFR text for the codes listed on the row. Where a provision ends with a list of conditions that this page does not reproduce, it says so.

• N95: UN1075, Liquefied petroleum gas and UN1978, Propane authorized for transport in DOT 4BA240 cylinders is not subject to the UN identification number and proper shipping name marking or the label requirements of this part subject to the following conditions (the listed conditions continue in the rule).

T50 is a portable tank instruction or provision, defined in 172.102(c)(7) and (c)(8). They are on the row but are not reproduced on this page.

What else to know about this entry

Two of the codes on this row are worth reading in full. T50 is a portable tank instruction, and N95 is a packaging note that applies to one specific cylinder type. N95 says that UN1075 and UN1978 (Propane) "authorized for transport in DOT 4BA240 cylinders" are not subject to the identification number and proper shipping name marking or the label requirements of part 172, subject to conditions the rule then lists. Because the conditions are long and change what a package must show, they are not repeated here: read N95 in 172.102(c)(6) before relying on it.

The ERG 2024 numerical index lists several names under UN1075, all pointing to Guide 115: Butane, Butylene, Isobutane, Isobutylene, Liquefied petroleum gas, LPG, Petroleum gases liquefied, Propane and Propylene. Propane is also listed under its own number, UN1978, with the same guide. The index is a first-responder aid; it does not decide which table entry a shipper must use.

Air quantity limits and a worked example

Columns 9A and 9B give the largest net quantity allowed in one package: column 9A for passenger-carrying aircraft or passenger-carrying rail car, column 9B for cargo aircraft only. 172.101(j) says "Forbidden" means the material may not be offered for transportation or transported in the applicable mode, and that the limit is net unless stated otherwise. For UN1075 the row shows Forbidden in column 9A and 150 kg in column 9B.

Worked example, 150 kg net in one package. Passenger aircraft or rail car (column 9A, Forbidden): Forbidden. Cargo aircraft only (column 9B, 150 kg): within 150 kg. The calculator above applies the same comparison to the quantity you type.

Highway placard check

Division 2.1 is on Table 2 of 172.504(e) as FLAMMABLE GAS.

For Table 2 materials moved by highway or rail, 172.504(c) says placards are not required on a transport vehicle or freight container that contains less than 454 kg (1,001 pounds) aggregate gross weight of hazardous materials covered by Table 2, except for bulk packagings and hazardous materials subject to 172.505. In the calculator, 1,000 pounds of non-bulk Table 2 material returns "not required" and 1,001 pounds returns "required", and any bulk packaging returns "required". The weight is the aggregate gross weight of all Table 2 materials on the vehicle, not just this one UN number.

Vessel stowage and the ERG guide

Column 10A gives category E (the material may be stowed "on deck" or "under deck" on a cargo vessel or on a passenger vessel carrying a limited number of passengers, but it is prohibited on a passenger vessel above that number). Column 10B lists 40. Code 40 in 176.84: Stow "clear of living quarters". These apply to shipments by vessel and have no effect on a truck-only move.

The Emergency Response Guidebook 2024 numerical index lists UN1075 under Guide 115, titled "Gases - Flammable (Including Refrigerated Liquids)". 172.101 itself does not list ERG guide numbers; the guide number comes from the PHMSA guidebook. The guide is for first responders during the initial phase of an incident and is not a shipping-paper or compliance document.

What this page does not do

It reproduces the table row and the regulation text it points to, and applies the air-limit and 1,001 pound placard comparisons to numbers you enter. It does not classify a product, pick a packing group, decide which table row applies to your shipment, or replace the packaging sections the row points to (the 173 sections in columns 8A to 8C), the marking, labelling and shipping paper rules in part 172, or hazmat training. Hazardous materials employees must be trained; that decision and the shipping description belong to a trained person. The eCFR header for 172.101 links an amendment published at 91 FR 49310 (August 4, 2026); confirm that the version you rely on includes the latest changes. In an emergency call 911 and the emergency response telephone number on the shipping paper.

Sources

Sources opened and read November 2, 2026. Regulation text was read from the eCFR API, which publishes the current Code of Federal Regulations.

• 49 CFR 172.101, Hazardous Materials Table (eCFR text current through October 29, 2026; read November 2, 2026)
• 49 CFR 172.102, Special provisions (read November 2, 2026)
• 49 CFR 172.504, General placarding requirements (read November 2, 2026)
• 49 CFR 173.115, hazard class definitions (read November 2, 2026)
• 49 CFR 176.84, Other requirements for stowage, cargo handling, and segregation (read November 2, 2026)
• PHMSA: Emergency Response Guidebook 2024 English PDF, numerical index (read via the Internet Archive capture of October 31, 2026; read November 2, 2026)