☣️ UN 1267 • CLASS 3

UN 1267 — Petroleum crude oil

Placard: Flammable. ERG Guide 128. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.

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⚠️ This page is a quick-reference aid. For real incidents: stage upwind, isolate, deny entry, request Hazmat early, and consult the current ERG + SOP/SOG.

UN 1267 is Petroleum crude oil, a Class 3 flammable liquid assigned to ERG Guide 128. It can generate vapors that ignite easily, travel to ignition sources and flash back.

Hazard overview: UN 1267 presents flammable vapor, flashback and container-heating hazards. Vapors are typically heavier than air and may collect in low, confined or sewer areas where ignition can cause a vapor explosion.

Response guidance: For a UN 1267 incident, responders should confirm the product using shipping papers, container markings, SDS and ERG Guide 128. Establish incident command, isolate the area, stay upwind and uphill, remove ignition sources when safe, keep vapors or runoff out of sewers and use compatible fire-control agents from a protected position.

Firefighter training notes: Training for UN 1267 should emphasize flammable liquid vapor travel, flashback, sewer vapor explosion risk, foam compatibility, container cooling and atmospheric monitoring. Common errors include standing downwind, allowing runoff into drains and ignoring low-area vapor collection. Use ERG 128, SDS and local SOP.

Regulatory context: Petroleum crude oil is regulated as a hazardous material for transportation and emergency response purposes. Transportation, workplace exposure, spill reporting, waste handling, storage and environmental requirements may vary by formulation, quantity and jurisdiction. Verify current requirements through shipping papers, SDS, facility documents and applicable DOT, OSHA, EPA, NFPA, state or local authority guidance.

Storage & handling: Petroleum crude oil should be stored in tightly closed compatible containers in a cool, dry, well-ventilated flammable-liquid storage area. Keep away from heat, sparks, open flames, oxidizers and incompatible materials, with bonding/grounding, secondary containment and drain protection where required.

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UN 1267 Quick Details

UN 1267
Product name: Petroleum crude oil
DOT Class: 3
Placard type: Flammable
ERG Guide: 128 (check current ERG)
Initial isolation: ERG 128: Initial isolation 50m in all directions. For large spills isolate 100m. If tank/rail car involved in fire, isolate 800m in all directions and consider evacuation.

Common Hazards of UN 1267

  • HIGHLY FLAMMABLE: will be easily ignited by heat, sparks or flames.
  • Vapors may form explosive mixtures with air.
  • Vapors may travel to an ignition source and flash back.
  • Most vapors are heavier than air and may spread along the ground into low or confined areas.
  • Vapor explosion hazard exists indoors, outdoors or in sewers.
  • Runoff to sewer may create fire or explosion hazard.
  • Containers may rupture or explode when heated.

Chemical Identity & Physical Properties

Dark brown to black viscous liquid with characteristic petroleum odor. Mixture of hydrocarbons with varying viscosity depending on source and composition.

Also known asCrude oilCrude petroleumPetroleumRock oilMineral oil (crude)Fossil oil
CAS Number8002-05-9
AppearanceDark brown to black viscous liquid with characteristic petroleum odor. Mixture of hydrocarbons with varying viscosity depending on source and composition.
Flash Point-35°C to 32°C (-31°F to 90°F) depending on composition and vapor pressure
Boiling PointWide range 38°C to 400°C (100°F to 750°F) depending on hydrocarbon fractions present
Vapor Density3-4 (heavier than air)
Water ReactivityNo significant reaction with water. Floats on water surface and spreads rapidly.
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.

Fireground Response Guidance — UN 1267

Extinguishing Media

Use AFFF or alcohol-resistant foam where compatible, dry chemical or CO2 for Class B fires; water spray may be used to cool exposed containers.

PPE Requirements

⚠️ Level B minimum recommended. SCBA with full protective clothing. Splash-resistant chemical suit for spill control. Avoid skin contact due to carcinogenic components.

Use positive-pressure SCBA for fire, heavy vapor or confined-space exposure. Chemical-resistant gloves, splash protection and protective clothing should be selected using SDS, product concentration and incident command.

Isolation & Evacuation

ERG 128: Initial isolation 50m in all directions. For large spills isolate 100m. If tank/rail car involved in fire, isolate 800m in all directions and consider evacuation.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 128).

First Actions for a UN 1267 Incident

  • CALL 911. Then call the emergency response telephone number on the shipping paper, if available.
  • Keep unauthorized personnel away.
  • Stay upwind, uphill and/or upstream.
  • Eliminate ignition sources if it is safe to do so.
  • Do not touch or walk through spilled liquid unless properly trained and wearing appropriate protective equipment.
  • Ventilate closed spaces before entering, but only if properly trained, equipped and authorized by incident command.
  • Isolate the spill or leak area for at least 50 meters (150 feet) in all directions.
  • For large spills, fire involvement or strong vapor movement, expand isolation and consider downwind evacuation based on monitoring and incident command.
  • Use ERG Guide 128, shipping papers, SDS and local SOP for protective actions and entry decisions.
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📋 Copy & Share Field Card

UN 1267 — Petroleum crude oil
HAZMAT RADIO NOTE — UN 1267 Product: Petroleum crude oil Class 3 / Flammable / ERG 128 PPE: Level B minimum recommended. SCBA with full protective clothing. Splash-resistant chemical suit for spill control. Avoid skin contact due to carcinogenic components. ISOLATION: ERG 128: Initial isolation 50m in all directions. For large spills isolate 100m. If tank/rail car involved in fire, isolate 800m in all directions and consider evacuation. ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO

Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.

SMS WhatsApp
=== IC HAZMAT BRIEFING === UN 1267 — Petroleum crude oil Class: 3 | Placard: Flammable | ERG Guide: 128 Appearance: Dark brown to black viscous liquid with characteristic petroleum odor. Mixture of hydrocarbons with varying viscosity depending on source and composition. Water Reactivity: No significant reaction with water. Floats on water surface and spreads rapidly. Extinguishing: Use AFFF or alcohol-resistant foam where compatible, dry chemical or CO2 for Class B fires; water spray may be used to cool exposed containers. PPE: Level B minimum recommended. SCBA with full protective clothing. Splash-resistant chemical suit for spill control. Avoid skin contact due to carcinogenic components. Isolation: ERG 128: Initial isolation 50m in all directions. For large spills isolate 100m. If tank/rail car involved in fire, isolate 800m in all directions and consider evacuation. — Key Hazards — • HIGHLY FLAMMABLE: will be easily ignited by heat, sparks or flames. • Vapors may form explosive mixtures with air. • Vapors may travel to an ignition source and flash back. — First Actions — • CALL 911. Then call the emergency response telephone number on the shipping paper, if available. • Keep unauthorized personnel away. • Stay upwind, uphill and/or upstream. • Eliminate ignition sources if it is safe to do so. SOURCE: allfirefighter.com/hazmat/un/petroleum-crude-oil-un-1267 | Always use current ERG + SOP/SOGIC BRIEFING

Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.

SMS (short)
UN1267 Petroleum crude oil Cls3 ERG128 | allfirefighter.com/hazmat/un/petroleum-crude-oil-un-1267SMS / 160 CHAR

Use for: Quick text to command or incoming units. Fits in a single SMS.

⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions. Page: https://allfirefighter.com/hazmat/un/petroleum-crude-oil-un-1267

Related UN Numbers in Class 3

Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
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Frequently Asked Questions about UN 1267

UN 1267 is Petroleum crude oil, a hazardous material assigned to ERG Guide 128.

Yes. It is flammable and vapors may form explosive mixtures with air.

ERG Guide 128 applies to UN 1267 for initial isolation, protective actions and first response guidance.

UN 1267 presents flammable vapor, flashback and container-heating hazards. Vapors are typically heavier than air and may collect in low, confined or sewer areas where ignition can cause a vapor explosion.

Use AFFF or alcohol-resistant foam where compatible, dry chemical or CO2 for Class B fires; water spray may be used to cool exposed containers.
Sources (high level): DOT/PHMSA marking & class concepts + ERG usage principles. This page does not reproduce ERG guide text—always consult the current ERG for incident-specific protective actions.