UN 2028 — Bombs, smoke, non-explosive, with corrosive liquid, without initiating device
Placard: Corrosive. ERG Guide 153. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2028 is Bombs, smoke, non-explosive, with corrosive liquid, without initiating device, a corrosive smoke device entry assigned to ERG Guide 153. Damaged canisters may release corrosive liquid, vapor or smoke even without an initiating device.
Hazard overview: CORROSIVE smoke device containing liquid; damaged devices may release corrosive vapor, smoke or liquid. Inhalation of smoke or vapor may cause severe respiratory, eye and skin injury. Specific corrosive agent controls water reactivity, toxicity and runoff hazards.
Response guidance: For a UN 2028 incident, verify the product with shipping papers, container markings, SDS and ERG Guide 153. Establish incident command, isolate the area, stay upwind, control ignition or incompatibility hazards, prevent runoff or vapor spread and base entry/fire-control actions on monitoring and local SOP.
Firefighter training notes: Training for UN 2028 should emphasize pressure/fire hazards, exposure routes, air monitoring, PPE selection, evacuation, decontamination and ERG/SDS verification. Use ERG 153, SDS and local SOP.
Regulatory context: Bombs, smoke, non-explosive, with corrosive liquid, without initiating device is regulated as a hazardous material for transportation and emergency response purposes. Storage, workplace exposure, emergency planning, spill reporting, waste handling and environmental requirements vary by exact product, concentration, quantity and jurisdiction. Verify current requirements through shipping papers, SDS, container markings and applicable DOT, OSHA, EPA, NFPA, state or local authority guidance.
Storage & handling: Bombs, smoke, non-explosive, with corrosive liquid, without initiating device should be stored in compatible containers in a secure, cool, ventilated hazardous-material area according to SDS and local procedures.
UN 2028 Quick Details
Common Hazards of UN 2028
- CORROSIVE smoke device containing liquid; damaged devices may release corrosive vapor, smoke or liquid.
- Inhalation of smoke or vapor may cause severe respiratory, eye and skin injury.
- Specific corrosive agent controls water reactivity, toxicity and runoff hazards.
- Fire may produce irritating, corrosive and/or toxic gases.
- Canisters may rupture or project fragments when heated even though listed as non-explosive.
- Runoff may be corrosive/toxic and contaminate equipment, drains or soil.
- Avoid dry disturbance of residues and prevent spread of contaminated smoke-liquid mixture.
Chemical Identity & Physical Properties
Metal or composite canister containing corrosive liquid chemical agent designed to generate smoke when deployed. Not an explosive device. Typically contains irritating or corrosive liquids that vaporize to create screening smoke.
| Also known as | Smoke bombs with corrosive liquidNon-explosive smoke devicesCorrosive smoke munitionsScreening smoke bombs |
| Appearance | Metal or composite canister containing corrosive liquid chemical agent designed to generate smoke when deployed. Not an explosive device. Typically contains irritating or corrosive liquids that vaporize to create screening smoke. |
| Flash Point | Not applicable (non-flammable smoke device) |
| Boiling Point | Varies by specific corrosive agent contained |
| Vapor Density | Heavier than air (corrosive vapors/smoke) |
| Water Reactivity | May react with water depending on specific corrosive agent; avoid water contact |
Fireground Response Guidance — UN 2028
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA and chemical protective clothing for smoke, vapor, leaking liquid or fire exposure. Level A or B may be needed depending on agent identity, concentration and monitoring results.
Isolation & Evacuation
First Actions for a UN 2028 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.
- Avoid breathing vapors, gas, dust, mist, smoke or fumes and avoid skin or eye contact.
- Do not touch damaged containers or spilled/released material unless properly trained and wearing appropriate protective equipment.
- Prevent contaminated dust, liquid, residues, runoff and decontamination waste from spreading.
- Ventilate closed spaces before entering, but only if properly trained, equipped, monitored and authorized by incident command.
- Isolate the spill or release area and expand the perimeter for fire involvement, vapor spread, dust spread, cylinder heating or unknown product identity.
- Use ERG Guide 153, shipping papers, SDS, air monitoring and incident command for protective actions.
📋 Copy & Share Field Card
UN 2028 — Bombs, smoke, non-explosive, with corrosUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.