☣️ UN 1076 • CLASS 2
UN 1076 — Phosgene
Placard: Toxic Gas. ERG Guide 125. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ 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.
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UN 1076 Quick Details
UN 1076
Product name: Phosgene
DOT Class: 2
Placard type: Toxic Gas
ERG Guide: 125 (check current ERG)
Initial isolation: ERG 125: Initial isolation 100m all directions; Protective Action Distance 500m daytime, 2000m nighttime for small spills; up to 7+ km for large spills
Common Hazards of UN 1076
- TOXIC and/or CORROSIVE; may be fatal if inhaled, ingested or absorbed through skin.
- Vapors are extremely irritating and corrosive.
- Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
- Fire will produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may cause environmental contamination.
- Some may burn but none ignite readily.
- Vapors from liquefied gas are initially heavier than air and spread along ground.
- Some of these materials may react violently with water.
Chemical Identity & Physical Properties
| Also known as | Carbonyl chlorideCarbon oxychlorideChloroformyl chlorideCarbonic dichloride |
| CAS Number | 75-44-5 |
| Appearance | Colorless gas or fuming liquid below 8°C with a pungent odor of newly mown hay or green corn at low concentrations. Highly toxic even at very low concentrations. |
| Flash Point | Not applicable (non-flammable gas) |
| Boiling Point | 8.2°C (46.8°F) |
| Vapor Density | 3.4 (much heavier than air) |
| Water Reactivity | Reacts slowly with water forming hydrochloric acid and carbon dioxide; reaction accelerates with heat |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1076
Extinguishing Media
Not applicable for fire suppression; evacuate area and allow gas to dissipate; use water spray to knock down vapors
PPE Requirements
⚠️ Level A required; full encapsulating suit with SCBA; extremely toxic by inhalation even at ppm levels; no skin contact permitted
Isolation & Evacuation
ERG 125: Initial isolation 100m all directions; Protective Action Distance 500m daytime, 2000m nighttime for small spills; up to 7+ km for large spills
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 125).
First Actions for a UN 1076 Incident
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Many gases are heavier than air and will spread along the ground and collect in low or confined areas
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area for at least 100 meters (330 feet) in all directions.
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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📋 Copy & Share Field Card
UN 1076 — PhosgeneHAZMAT RADIO NOTE — UN 1076
Product: Phosgene
Class 2 / Toxic Gas / ERG 125
PPE: Level A required; full encapsulating suit with SCBA; extremely toxic by inhalation even at ppm levels; no skin contact permitted
ISOLATION: ERG 125: Initial isolation 100m all directions; Protective Action Distance 500m daytime, 2000m nighttime for small spills; up to 7+ km for large spills
ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO
Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
=== IC HAZMAT BRIEFING ===
UN 1076 — Phosgene
Class: 2 | Placard: Toxic Gas | ERG Guide: 125
Appearance: Colorless gas or fuming liquid below 8°C with a pungent odor of newly mown hay or green corn at low concentrations. Highly toxic even at very low concentrations.
Water Reactivity: Reacts slowly with water forming hydrochloric acid and carbon dioxide; reaction accelerates with heat
Extinguishing: Not applicable for fire suppression; evacuate area and allow gas to dissipate; use water spray to knock down vapors
PPE: Level A required; full encapsulating suit with SCBA; extremely toxic by inhalation even at ppm levels; no skin contact permitted
Isolation: ERG 125: Initial isolation 100m all directions; Protective Action Distance 500m daytime, 2000m nighttime for small spills; up to 7+ km for large spills
— Key Hazards —
• TOXIC and/or CORROSIVE; may be fatal if inhaled, ingested or absorbed through skin.
• Vapors are extremely irritating and corrosive.
• Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Keep unauthorized personnel away.
• Stay upwind, uphill and/or upstream.
• Many gases are heavier than air and will spread along the ground and collect in low or confined areas
SOURCE: allfirefighter.com/hazmat/un/1076 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1076 Phosgene Cls2 ERG125 | ERG 125: Initial isolation 100m all directions; Protective Action Distance 500m | allfirefighter.com/hazmat/un/1076SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS. Includes link to full page.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/1076
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Frequently Asked Questions about UN 1076
TOXIC and/or CORROSIVE; may be fatal if inhaled, ingested or absorbed through skin. Vapors are extremely irritating and corrosive. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause environmental contamination. Some may burn but none ignite readily. Vapors from liquefied gas are initially heavier than air and spread along ground. Some of these materials may react violently with water.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Level A required; full encapsulating suit with SCBA; extremely toxic by inhalation even at ppm levels; no skin contact permitted
Water reactivity: Reacts slowly with water forming hydrochloric acid and carbon dioxide; reaction accelerates with heat. Recommended extinguishing: Not applicable for fire suppression; evacuate area and allow gas to dissipate; use water spray to knock down vapors.
ERG Guide 125 recommendation: ERG 125: Initial isolation 100m all directions; Protective Action Distance 500m daytime, 2000m nighttime for small spills; up to 7+ km for large spills
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 125 and your department SOP/SOG for incident-specific protective actions.
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.