☣️ UN 1075 • CLASS 2

UN 1075 — Petroleum gases, liquefied

Placard: Flammable Gas. ERG Guide 115. 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.

Petroleum gases, liquefied, also known as LPG, are a highly flammable and widely used industrial chemical, with a DOT class of 2, and are commonly encountered by first responders in transportation accidents and industrial settings, the scale of production and transport of this substance is massive, with millions of tons being moved every year, and its industrial uses include fuel for vehicles, heating, and cooking, making it a critical component of modern life, however, its high flammability and potential for explosion make it a significant hazard, and first responders must be trained to handle it properly, the correct handling and response to petroleum gases, liquefied, are crucial to preventing accidents and minimizing damage, and first responders must be aware of the potential hazards and take necessary precautions, the substance is highly volatile and can be easily ignited by heat, sparks, or flames, and its vapors can travel long distances and collect in low-lying areas, making it a significant threat to people and the environment

Hazard overview: Petroleum gases, liquefied, are extremely flammable and can be easily ignited by heat, sparks, or flames, they will form explosive mixtures with air, and their vapors are initially heavier than air, spreading along the ground and collecting in low-lying areas, the vapors can travel to a source of ignition and flash back, causing a fire or explosion, the substance can also cause cold burns if it comes into contact with skin, and its vapors can displace oxygen, leading to asphyxiation, the LC50 for petroleum gases, liquefied, is not well established, but it is known to be highly toxic, and the IDLH is not established, however, the substance is known to be highly hazardous, and first responders must exercise extreme caution when handling it, in the worst-case scenario, a large release of petroleum gases, liquefied, could result in a massive fire or explosion, causing significant damage and loss of life, and first responders must be prepared to respond quickly and effectively to minimize the damage

Response guidance: In the event of a spill or leak of petroleum gases, liquefied, first responders should isolate the area to a distance of 100m in all directions, and if a tank or rail car is involved in a fire, the isolation distance should be 800m, with evacuation of 1600m initial downwind, the correct suppression agent for this substance is dry chemical, CO2, or water spray for cooling containers, however, foam is not effective on gas fires, and first responders should use caution when approaching the scene, as the substance can be highly volatile and explosive, CHEMTREC should be contacted immediately for assistance, and first responders should be aware of the potential for the substance to spread and collect in low-lying areas, making it a significant threat to people and the environment

Firefighter training notes: First responders should be trained to respond to spills or leaks of petroleum gases, liquefied, with caution and awareness of the potential hazards, a common tactical error is underestimating the volatility of the substance, and first responders should be aware of the potential for the substance to spread and collect in low-lying areas, making it a significant threat to people and the environment, the ICS position needs to be aware of the potential hazards and take necessary precautions, and mutual aid criteria should be established to ensure a rapid and effective response, first responders should also be trained to use the correct PPE and suppression agents, and to follow established protocols for responding to spills or leaks of the substance

Regulatory context: Petroleum gases, liquefied, have a DOT class of 2, and are subject to regulations regarding transportation and storage, the OSHA PEL for this substance is not well established, however, the substance is known to be highly hazardous, and first responders must exercise extreme caution when handling it, the substance is also subject to regulations regarding its use and handling, and first responders should be aware of the potential hazards and take necessary precautions

Storage & handling: Petroleum gases, liquefied, should be stored in a well-ventilated area, away from heat sources and ignition sources, the substance should be stored in a container that is specifically designed for the storage of flammable liquids, and the container should be labeled with the correct hazard warnings, the substance should also be stored at a temperature below its flash point, and the area should be equipped with a fire suppression system, the top 3 incompatible materials for this substance are heat sources, ignition sources, and oxidizing agents, and the substance should be stored away from these materials to prevent accidents

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UN 1075 Quick Details

UN 1075
Product name: Petroleum gases, liquefied
DOT Class: 2
Placard type: Flammable Gas
ERG Guide: 115 (check current ERG)
Initial isolation: ERG 115: isolate spill/leak 100m all directions; if tank/rail car involved in fire isolate 800m and evacuate 1600m initial downwind

Common Hazards of UN 1075

  • EXTREMELY FLAMMABLE.
  • Will be easily ignited by heat, sparks or flames.
  • Will form explosive mixtures with air.
  • Vapors from liquefied gas are initially heavier than air and spread along ground.
  • Vapors may travel to source of ignition and flash back.
  • Cylinders exposed to fire may vent and release flammable gas through pressure relief devices.
  • Containers may explode when heated.
  • Ruptured cylinders may rocket.

Chemical Identity & Physical Properties

Petroleum gases, liquefied, are a colorless liquefied gas with a characteristic petroleum odor, often odorized with ethyl mercaptan for leak detection, the substance has a flash point of -104°C (-155°F), a boiling point of -42°C to 0°C (-44°F to 32°F) depending on composition, and a vapor density of 1.5-2.0, which is heavier than air, the substance is also highly volatile, with a vapor pressure that can cause it to rapidly expand and spread, making it a significant hazard

Also known asLPGLiquefied Petroleum GasPropane-Butane mixtureLP GasAutogas
CAS Number68476-85-7
AppearanceColorless liquefied gas with a characteristic petroleum odor (often odorized with ethyl mercaptan for leak detection). Heavier than air as a gas, shipped as a liquid under pressure.
Flash Point-104°C (-155°F)
Boiling Point-42°C to 0°C (-44°F to 32°F) depending on composition
Vapor Density1.5-2.0 (heavier than air)
Water ReactivityNo reaction with water; insoluble
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.

Fireground Response Guidance — UN 1075

Extinguishing Media

Dry chemical, CO2, water spray for cooling containers; foam not effective on gas fires

PPE Requirements

⚠️ Level B minimum in vapor cloud; SCBA and chemical-resistant suit for liquid contact; cold burns possible from liquid

The minimum PPE level required for responding to a spill or leak of petroleum gases, liquefied, is Level B, with an SCBA and chemical-resistant suit for liquid contact, cold burns are possible from liquid contact, and first responders should use caution when handling the substance, the correct PPE is crucial to preventing injury and illness, and first responders should be aware of the potential hazards and take necessary precautions, the PPE should include insulated gloves and a face shield to prevent cold burns, and a self-contained breathing apparatus (SCBA) to prevent inhalation of the substance

Isolation & Evacuation

ERG 115: isolate spill/leak 100m all directions; if tank/rail car involved in fire isolate 800m and evacuate 1600m initial downwind
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 115).

First Actions for a UN 1075 Incident

  • Keep unauthorized personnel away.
  • Stay upwind, uphill and/or upstream.
  • Isolate spill or leak area for at least 100 meters (330 feet) in all directions.
  • Consider initial downwind evacuation for at least 800 meters (1/2 mile).
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📋 Copy & Share Field Card

UN 1075 — Petroleum gases, liquefied
HAZMAT RADIO NOTE — UN 1075 Product: Petroleum gases, liquefied Class 2 / Flammable Gas / ERG 115 PPE: Level B minimum in vapor cloud; SCBA and chemical-resistant suit for liquid contact; cold burns possible from liquid ISOLATION: ERG 115: isolate spill/leak 100m all directions; if tank/rail car involved in fire isolate 800m and evacuate 1600m initial downwind 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 1075 — Petroleum gases, liquefied Class: 2 | Placard: Flammable Gas | ERG Guide: 115 Appearance: Colorless liquefied gas with a characteristic petroleum odor (often odorized with ethyl mercaptan for leak detection). Heavier than air as a gas, shipped as a liquid under pressure. Water Reactivity: No reaction with water; insoluble Extinguishing: Dry chemical, CO2, water spray for cooling containers; foam not effective on gas fires PPE: Level B minimum in vapor cloud; SCBA and chemical-resistant suit for liquid contact; cold burns possible from liquid Isolation: ERG 115: isolate spill/leak 100m all directions; if tank/rail car involved in fire isolate 800m and evacuate 1600m initial downwind — Key Hazards — • EXTREMELY FLAMMABLE. • Will be easily ignited by heat, sparks or flames. • Will form explosive mixtures with air. — First Actions — • Keep unauthorized personnel away. • Stay upwind, uphill and/or upstream. • Isolate spill or leak area for at least 100 meters (330 feet) in all directions. • Consider initial downwind evacuation for at least 800 meters (1/2 mile). SOURCE: allfirefighter.com/hazmat/un/1075 | Always use current ERG + SOP/SOGIC BRIEFING

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

SMS (short)
UN1075 Petroleum gases, liquefied Cls2 ERG115 | allfirefighter.com/hazmat/un/1075SMS / 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-gases-liquefied-un-1075

Related UN Numbers in Class 2

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 1075

Yes, UN 1075 is extremely flammable and can be easily ignited by heat, sparks, or flames. It will form explosive mixtures with air and its vapors are initially heavier than air, spreading along the ground and collecting in low-lying areas.

The minimum PPE level required for responding to a spill or leak of UN 1075 is Level B, with an SCBA and chemical-resistant suit for liquid contact. Cold burns are possible from liquid contact.

Exposure to UN 1075 can cause cold burns, asphyxiation, and other health effects due to its high flammability and potential for explosion. The substance can also displace oxygen, leading to asphyxiation.

UN 1075 is a colorless liquefied gas with a characteristic petroleum odor, often odorized with ethyl mercaptan for leak detection.

The correct suppression agent for UN 1075 is dry chemical, CO2, or water spray for cooling containers. However, foam is not effective on gas fires.
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.