☣️ UN 3276 • CLASS 6
UN 3276 — Nitriles, liquid, poisonous, n.o.s.
Placard: Toxic. ERG Guide 151. 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.
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UN 3276 Quick Details
UN 3276
Product name: Nitriles, liquid, poisonous, n.o.s.
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial isolation: ERG 151: Initial isolation 50m all directions; Protect downwind 300m day or 800m night for small spills; Large spills isolate 800m day or 3200m night
Common Hazards of UN 3276
- Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
- Avoid any skin contact.
- Fire may produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental
- Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive
- Containers may explode when heated.
- Runoff may pollute waterways.
Chemical Identity & Physical Properties
| Also known as | Nitrile compounds, liquidToxic nitriles, liquidPoisonous nitrile solutionOrganic nitriles, liquid |
| Appearance | Colorless to pale yellow liquid with varying odor depending on specific nitrile compound. May have characteristic almond-like or pungent odor at room temperature. |
| Flash Point | Varies by compound, typically -20C to 80C (-4F to 176F) |
| Boiling Point | Varies by compound, typically 80C to 250C (176F to 482F) |
| Vapor Density | Greater than 1 (heavier than air) for most nitrile compounds |
| Water Reactivity | Generally stable in water, though some nitriles may hydrolyze slowly |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3276
Extinguishing Media
Alcohol-resistant foam, CO2, dry chemical, water spray for cooling
PPE Requirements
⚠️ Level A required for unknown concentrations; Level B minimum with SCBA; avoid all skin contact, use nitrile or butyl rubber gloves
Isolation & Evacuation
ERG 151: Initial isolation 50m all directions; Protect downwind 300m day or 800m night for small spills; Large spills isolate 800m day or 3200m night
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
First Actions for a UN 3276 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.
- Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- 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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UN 3276 — Nitriles, liquid, poisonous, n.o.s.HAZMAT RADIO NOTE — UN 3276
Product: Nitriles, liquid, poisonous, n.o.s.
Class 6 / Toxic / ERG 151
PPE: Level A required for unknown concentrations; Level B minimum with SCBA; avoid all skin contact, use nitrile or butyl rubber gloves
ISOLATION: ERG 151: Initial isolation 50m all directions; Protect downwind 300m day or 800m night for small spills; Large spills isolate 800m day or 3200m night
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 3276 — Nitriles, liquid, poisonous, n.o.s.
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Colorless to pale yellow liquid with varying odor depending on specific nitrile compound. May have characteristic almond-like or pungent odor at room temperature.
Water Reactivity: Generally stable in water, though some nitriles may hydrolyze slowly
Extinguishing: Alcohol-resistant foam, CO2, dry chemical, water spray for cooling
PPE: Level A required for unknown concentrations; Level B minimum with SCBA; avoid all skin contact, use nitrile or butyl rubber gloves
Isolation: ERG 151: Initial isolation 50m all directions; Protect downwind 300m day or 800m night for small spills; Large spills isolate 800m day or 3200m night
— Key Hazards —
• Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
• Avoid any skin contact.
• Fire may produce irritating, corrosive and/or toxic gases.
— 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.
• Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
SOURCE: allfirefighter.com/hazmat/un/3276 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3276 Nitriles, liquid, poisonous, n.o.s. Cls6 ERG151 | allfirefighter.com/hazmat/un/3276SMS / 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/3276
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Frequently Asked Questions about UN 3276
Highly toxic, may be fatal if inhaled, ingested or absorbed through skin. Avoid any skin contact. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive Containers may explode when heated. Runoff may pollute waterways.
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 for unknown concentrations; Level B minimum with SCBA; avoid all skin contact, use nitrile or butyl rubber gloves
Water reactivity: Generally stable in water, though some nitriles may hydrolyze slowly. Recommended extinguishing: Alcohol-resistant foam, CO2, dry chemical, water spray for cooling.
ERG Guide 151 recommendation: ERG 151: Initial isolation 50m all directions; Protect downwind 300m day or 800m night for small spills; Large spills isolate 800m day or 3200m night
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 151 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.