UN 3095 — Corrosive solid, self-heating, n.o.s.
Placard: Corrosive. ERG Guide 136. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3095 is Corrosive solid, self-heating, n.o.s., a broad corrosive self-heating solid assigned to ERG Guide 136. Heat buildup, air exposure and package condition matter.
Hazard overview: CORROSIVE self-heating solid, n.o.s.; dust or contact can burn eyes, skin and respiratory tissue. May heat and ignite on exposure to air, moisture, contamination or poor heat dissipation. May re-ignite after apparent extinguishment.
Response guidance: For UN 3095, isolate the material, prevent heat buildup and use SCBA with chemical protection. Avoid disturbance, monitor for re-ignition and verify media with SDS and ERG 136.
Firefighter training notes: Training for UN 3095 should emphasize product verification, SCBA use, oxidizer/corrosive compatibility, vapor/dust monitoring, decontamination and runoff control. Use ERG 136, SDS and local SOP.
Regulatory context: Corrosive solid, self-heating, n.o.s. is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, formulation, temperature-control status and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Corrosive solid, self-heating, n.o.s. should be stored in tightly closed compatible containers with ventilation, secondary containment, restricted access and SDS-based segregation from incompatible materials.
UN 3095 Quick Details
Common Hazards of UN 3095
- CORROSIVE self-heating solid, n.o.s.; dust or contact can burn eyes, skin and respiratory tissue.
- May heat and ignite on exposure to air, moisture, contamination or poor heat dissipation.
- May re-ignite after apparent extinguishment.
- Contact with metals may release flammable hydrogen gas depending on the exact corrosive.
- Fire may produce irritating, corrosive and toxic gases.
- Runoff or debris may spread corrosive and hot self-heating material.
- Exact composition and package condition must be verified from SDS.
Chemical Identity & Physical Properties
Variable appearance depending on specific substance; typically a solid material that may spontaneously heat when exposed to air. The substance is corrosive and capable of self-heating reactions, may be transported in molten form.
| Also known as | Corrosive solid, self-heating, not otherwise specifiedSelf-heating corrosive solidUN3095 |
| Appearance | Variable appearance depending on specific substance; typically a solid material that may spontaneously heat when exposed to air. The substance is corrosive and capable of self-heating reactions, may be transported in molten form. |
| Flash Point | Not applicable (self-heating solid) |
| Boiling Point | Variable depending on specific substance |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | May react with water producing heat; caution advised due to corrosive nature |
Fireground Response Guidance — UN 3095
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA and chemical-resistant protective clothing. Level A or B may be needed for unknown product, heavy vapor, dust, splash or fuming risk.
Isolation & Evacuation
First Actions for a UN 3095 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind, uphill and upstream.
- Avoid breathing vapor, dust, mist, smoke or fumes and avoid skin or eye contact.
- Do not touch damaged containers or spilled material without proper training and PPE.
- Prevent contaminated liquid, dust, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 136, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3095 — Corrosive solid, self-heating, n.o.s.Use 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.