UN1267 petroleum crude oil decoder.

The UN1267 row in the Hazardous Materials Table

The table below is 49 CFR 172.101 as published in the eCFR, current through October 29, 2026, for UN1267. Columns are: class (3), packing group (5), label codes (6), special provisions (7), packaging exceptions (8A), non-bulk packaging (8B), bulk packaging (8C), quantity limits for passenger aircraft or railcar (9A) and cargo aircraft only (9B), and vessel stowage (10A and 10B). UN1267 has 3 rows, so each one is listed.

Reading the packaging columns

Columns 8A to 8C do not hold rules themselves; they point to sections of part 173. For this entry they point to:

• 173.150: Exceptions for Class 3 (flammable and combustible liquids).
• 173.201: Non-bulk packagings for liquid hazardous materials in Packing Group I.
• 173.243: Bulk packaging for certain high hazard liquids and dual hazard materials which pose a moderate hazard.
• 173.202: Non-bulk packagings for liquid hazardous materials in Packing Group II.
• 173.242: Bulk packagings for certain medium hazard liquids and solids, including solids with dual hazards.
• 173.203: Non-bulk packagings for liquid hazardous materials in Packing Group III.

Exceptions in column 8A apply only if that section is referenced for the specific material in the table, so a limited quantity route that exists for one UN number is not automatically open to another.

Special provisions on this entry

The letter prefixes on special provisions tell you where each applies (172.102(c)): a code of only numbers is multi-modal; "A" applies only to transportation by aircraft; "B" only to bulk packaging; "IB" and "IP" only to IBCs; "N" only to non-bulk packaging; "T" and "TP" only to UN portable tanks.

• 144: If transported as a residue in an underground storage tank cleaned and purged or rendered inert per API Standard 1604, the tank and the material are not subject to the other requirements of the subchapter; sediment that itself meets a hazardous material definition still is.
• 357: A bulk packaging that emits hydrogen sulfide in enough concentration that vapors from the crude oil can present an inhalation hazard must be marked as specified in 172.327.
• T11: a portable tank instruction. It set the minimum test pressure, shell thickness, bottom opening and pressure relief requirements for UN portable tanks.
• TP1: The maximum degree of filling of a portable tank must not exceed the figure from the formula given in the provision.
• TP8: A portable tank with a minimum test pressure of 1.5 bar (150 kPa) may be used when the flash point of the material is greater than 0 degrees C (32 degrees F).
• IB2: Authorized IBCs: metal (31A, 31B, 31N), rigid plastic (31H1, 31H2) and composite (31HZ1).
• T4: a portable tank instruction. It set the minimum test pressure, shell thickness, bottom opening and pressure relief requirements for UN portable tanks.
• B1: If the flash point is at or above 38 degrees C (100 degrees F) and below 93 degrees C (200 degrees F), the bulk packaging requirements of 173.241 apply; below 38 degrees C (100 degrees F), 173.242 applies.
• IB3: Authorized IBCs: metal (31A, 31B, 31N), rigid plastic (31H1, 31H2) and composite (31HZ1 and 31HA2, 31HB2, 31HN2, 31HD2, 31HH2).
• T2: a portable tank instruction. It set the minimum test pressure, shell thickness, bottom opening and pressure relief requirements for UN portable tanks.

The group is set by the oil, not by the entry

Unlike acetone or gasoline, crude oil appears in the table in all three packing groups, and column 8B and 8C follow the group: Packing Group I uses 173.201 and 173.243, Group II uses 173.202 and 173.242, and Group III uses 173.203 and column 8C 242 as well. The group comes from the closed-cup flash point and initial boiling point criteria in 173.121(a), which the Class 3 checker on this site walks through. Because crude oil varies by field, the shipper normally classifies from a measured flash point and boiling point rather than from the name.

Special provision 357: hydrogen sulfide marking

Provision 357 applies to every row: a bulk packaging that emits hydrogen sulfide in enough concentration that vapors evolved from the crude oil can present an inhalation hazard must be marked as specified in 172.327. ERG 2024 Guide 128 repeats the point in its health section: "Petroleum crude oil (UN1267) may contain TOXIC hydrogen sulphide gas." The guide also warns that for petroleum crude oil you should not spray water directly into a breached tank car because this can lead to a dangerous boil over.

Special provision 144 and underground tank residue

Provision 144 says that crude oil transported as a residue in an underground storage tank, as defined in 40 CFR 280.12, that has been cleaned and purged or rendered inert per API Standard 1604, is not subject to the other requirements of the subchapter. Sediment left in the tank that meets a hazardous material definition still is. Group III also carries B1, which sends bulk packaging to 173.241 when the flash point is at or above 38 degrees C (100 degrees F) and below 93 degrees C (200 degrees F), and to 173.242 below 38 degrees C.

ERG 2024 Guide 128: Flammable Liquids (Water-Immiscible)

The ERG 2024 numerical index lists UN1267 against Guide 128. The guide appears on pages 185 to 186 of the 2024 guidebook. The guidebook is meant for first responders during the initial phase of an incident, and it says to call 911 and then the emergency response telephone number on the shipping paper.

• Fire or explosion: "HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames." Vapors may form explosive mixtures with air, may travel to a source of ignition and flash back, and most are heavier than air. Many of these liquids float on water, and the guide notes the substance may be transported hot.
• Health: inhalation or contact may irritate or burn skin and eyes; fire may produce irritating, corrosive or toxic gases; vapors may cause dizziness or asphyxiation in confined areas.
• Evacuation: isolate a spill or leak area for at least 50 meters (150 feet) in all directions; for a large spill consider initial downwind evacuation of at least 300 meters (1000 feet); for a tank, rail tank car or highway tank in a fire, isolate for 800 meters (1/2 mile).
• Fire response: small fire, dry chemical, CO2, water spray or regular foam (alcohol-resistant foam if regular foam is ineffective or unavailable); large fire, water spray, fog or regular foam. For mixtures containing alcohol or a polar solvent, alcohol-resistant foam may be more effective.

The guide is a starting point until the material is identified. Read the full guide in the current ERG, and use the shipping paper emergency number for product-specific advice.

Placards, quantity and vessel stowage

3 is a Table 2 category in 172.504(e), so the placard is FLAMMABLE. On a highway vehicle with less than 454 kg (1,001 pounds) aggregate gross weight of Table 2 materials in non-bulk packages, no placard is required, but bulk packagings and materials subject to 172.505 are not eligible for that exception (172.504(c)).

Vessel stowage is the category in column 10A (E, B, A), which the table sets for this entry, plus the column 10B codes. Column 10B is blank for this entry. Hazmat shipped as a limited quantity is allocated stowage category A and is not subject to the column 10B stowage codes (176.63(a)).

Worked example

A well-site hauler loads a cargo tank with Packing Group II crude oil, a bulk packaging. Under 172.504(c) bulk packagings are placarded at any quantity, so the FLAMMABLE placard is required whatever the weight. If the oil is later found to emit enough hydrogen sulfide to present an inhalation hazard, special provision 357 requires the 172.327 marking. For a 4 L laboratory sample of Group I crude sent by cargo aircraft only, the 30 L column 9B limit applies; the same sample cannot go on a passenger aircraft because 4 L is over the 1 L limit.

Limits

This page reads the 172.101 table, the 172.102 special provisions, 172.504 and the section titles named above, plus ERG 2024. It does not classify your material, choose a proper shipping name, or build shipping papers, marks, labels or training requirements. The checker compares your net quantity to the printed column 9A and 9B limits and applies the 1,001 pound rule to the class on the row; it does not model subsidiary hazard placards (172.505), mixed loads, state rules or carrier restrictions. Special provisions are shown in summary; read the full text in 172.102 before relying on one. Hazmat shipping needs trained hazmat employees (49 CFR part 172, subpart H).

Sources

Sources opened and read November 2, 2026.

• eCFR: 49 CFR 172.101, Hazardous Materials Table (current through October 29, 2026) (read November 2, 2026)
• eCFR: 49 CFR 172.102, special provisions (current through October 29, 2026) (read November 2, 2026)
• eCFR: 49 CFR 172.504, general placarding requirements (current through October 29, 2026) (read November 2, 2026)
• eCFR: 49 CFR 173.150, Exceptions for Class 3 (flammable and combustible liquids) (current through October 29, 2026) (read November 2, 2026)
• eCFR: 49 CFR 173.201, Non-bulk packagings for liquid hazardous materials in Packing Group I (current through October 29, 2026) (read November 2, 2026)
• eCFR: 49 CFR 173.243, Bulk packaging for certain high hazard liquids and dual hazard materials which pose a moderate hazard (current through October 29, 2026) (read November 2, 2026)
• eCFR: 49 CFR 173.202, Non-bulk packagings for liquid hazardous materials in Packing Group II (current through October 29, 2026) (read November 2, 2026)
• eCFR: 49 CFR 173.242, Bulk packagings for certain medium hazard liquids and solids, including solids with dual hazards (current through October 29, 2026) (read November 2, 2026)
• eCFR: 49 CFR 173.203, Non-bulk packagings for liquid hazardous materials in Packing Group III (current through October 29, 2026) (read November 2, 2026)
• eCFR: 49 CFR 176.84, other requirements for stowage, cargo handling and segregation (current through October 29, 2026) (read November 2, 2026)
• eCFR: 49 CFR 176.63, stowage locations (current through October 29, 2026) (read November 2, 2026)
• PHMSA: Emergency Response Guidebook (ERG) landing page (read November 2, 2026)
• PHMSA: ERG 2024 PDF, numerical index and guide pages (the phmsa.dot.gov host refused automated requests; the Internet Archive copy of this file was read) (read November 2, 2026)