UN 2030 — Hydrazine, aqueous solution, with more than 37% hydrazine
Placard: Corrosive. ERG Guide 153. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2030 is Hydrazine, aqueous solution, with more than 37% hydrazine, a toxic corrosive hydrazine solution assigned to ERG Guide 153. It can injure by inhalation, ingestion or skin absorption and may burn depending on concentration.
Hazard overview: TOXIC and CORROSIVE hydrazine solution; inhalation, ingestion or skin absorption may cause severe injury. Combustible/flammable behavior depends on concentration; stronger solutions can form ignitable vapors. Liquid and vapor can burn eyes, skin and respiratory tissue.
Response guidance: For a UN 2030 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 2030 should emphasize hydrazine toxicity, skin absorption, flammable vapor behavior, incompatible oxidizers, vapor monitoring, decontamination and runoff control. Use ERG 153, SDS and local SOP.
Regulatory context: Hydrazine, aqueous solution, with more than 37% hydrazine 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: Hydrazine, aqueous solution, with more than 37% hydrazine should be stored in compatible tightly closed containers in a cool, ventilated flammable/corrosive area away from oxidizers, acids where incompatible, heat, ignition sources and unauthorized access. Provide spill containment and vapor control.
UN 2030 Quick Details
Common Hazards of UN 2030
- TOXIC and CORROSIVE hydrazine solution; inhalation, ingestion or skin absorption may cause severe injury.
- Combustible/flammable behavior depends on concentration; stronger solutions can form ignitable vapors.
- Liquid and vapor can burn eyes, skin and respiratory tissue.
- Skin absorption and contaminated clothing can extend exposure.
- Reacts dangerously with oxidizers and some metals or incompatible chemicals.
- Fire may produce nitrogen oxides and other irritating/toxic gases.
- Runoff may be toxic, corrosive and environmentally harmful.
Chemical Identity & Physical Properties
Colorless, fuming, oily liquid with an ammonia-like odor. Hygroscopic and corrosive. May appear slightly yellowish when impure.
| Also known as | DiamineHydrazine hydrateLevoxineDiamideHydrazine monohydrate |
| CAS Number | 302-01-2 |
| Appearance | Colorless, fuming, oily liquid with an ammonia-like odor. Hygroscopic and corrosive. May appear slightly yellowish when impure. |
| Flash Point | 52°C (126°F) for 64% solution; varies with concentration |
| Boiling Point | 120°C (248°F) at 100% concentration; lower for dilute solutions |
| Vapor Density | 1.1 (heavier than air) |
| Water Reactivity | Miscible with water; dissolves readily. Aqueous solutions are less hazardous than anhydrous hydrazine but still toxic and corrosive. |
Fireground Response Guidance — UN 2030
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, mist, fire or confined-space exposure. Chemical-resistant suit, gloves, boots and eye/face protection should be selected from SDS; Level A may be needed for anhydrous or high-concentration hydrazine.
Isolation & Evacuation
First Actions for a UN 2030 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.
- Eliminate ignition sources if safe and keep vapors and runoff out of drains, sewers, basements and low areas.
- Do not touch damaged containers or spilled/released material unless properly trained and wearing appropriate protective equipment.
- 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 2030 — Hydrazine, aqueous solution, with more tUse 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.