UN 3093 — Corrosive liquid, oxidizing, n.o.s.
Placard: Corrosive. ERG Guide 157. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3093 At a Glance
UN 3093 (Corrosive liquid, oxidizing) is listed as DOT Class 8 Corrosive and is assigned to ERG Guide 157. Use this page to review placard data, common hazards, PPE notes, isolation context, first actions, and related UN numbers.
UN 3093 is Corrosive liquid, oxidizing, n.o.s., a broad corrosive oxidizing liquid entry assigned to ERG Guide 157. Exact identity controls water reaction and fire tactics.
Hazard overview: CORROSIVE and OXIDIZING liquid, n.o.s.; contact can severely burn eyes, skin and respiratory tissue. Can intensify fire involving combustibles and incompatible materials. Water or moist air may release heat or toxic/corrosive gases depending on the exact product.
Response guidance: For UN 3093, isolate the area, remove combustibles/reducing agents and identify the exact oxidizer. Use compatible tactics and contain toxic/corrosive runoff under ERG 157.
Firefighter training notes: Training for UN 3093 should emphasize product verification, SCBA use, oxidizer/corrosive compatibility, vapor/dust monitoring, decontamination and runoff control. Use ERG 157, SDS and local SOP.
Regulatory context: Corrosive liquid, oxidizing, 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 liquid, oxidizing, n.o.s. should be stored in compatible oxidizer/corrosive-rated containers away from combustibles, organics, fuels, reducing agents, heat and contamination.
UN 3093 Quick Details
Common Hazards of UN 3093
- CORROSIVE and OXIDIZING liquid, n.o.s.; contact can severely burn eyes, skin and respiratory tissue.
- Can intensify fire involving combustibles and incompatible materials.
- Water or moist air may release heat or toxic/corrosive gases depending on the exact product.
- Contact with fuels, organics, metals or reducing agents may cause violent reaction.
- Fire may produce toxic, corrosive and oxidizing gases.
- Runoff may be corrosive, oxidizing and harmful to waterways.
- Exact chemical identity must be verified before choosing water, foam or neutralization tactics.
Chemical Identity & Physical Properties
Variable appearance depending on specific substance; typically a liquid at room temperature. May be colorless to various colors with possible irritating or pungent odor. This is a generic shipping classification covering multiple corrosive and oxidizing liquids not otherwise specified.
| Also known as | Corrosive oxidizing liquid NOSOxidizing corrosive liquid not otherwise specifiedUN3093 |
| Appearance | Variable appearance depending on specific substance; typically a liquid at room temperature. May be colorless to various colors with possible irritating or pungent odor. This is a generic shipping classification covering multiple corrosive and oxidizing liquids not otherwise specified. |
| Flash Point | Not applicable (oxidizing material) |
| Boiling Point | Variable depending on specific substance |
| Vapor Density | Variable depending on specific substance; typically heavier than air |
| Water Reactivity | May react with water or moist air to release toxic, corrosive or flammable gases; reaction may generate significant heat increasing vapor concentration |
Fireground Response Guidance — UN 3093
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 3093 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.
- Keep combustibles, organics, fuels and reducing agents away from the oxidizer.
- 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 157, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3093 — Corrosive liquid, oxidizing, 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.