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 At a Glance
UN 3095 (Corrosive solid, self-heating) is listed as DOT Class 8 Corrosive and is assigned to ERG Guide 136. Use this page to review placard data, common hazards, PPE notes, isolation context, first actions, and related UN numbers.
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.