UN 1761 — Cupriethylenediamine, solution
Placard: Corrosive. ERG Guide 154. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 1761 is Cupriethylenediamine, solution, a corrosive copper-amine solution assigned to ERG Guide 154. It is typically a deep blue/violet alkaline liquid with ammonia-like vapor and copper-containing runoff concerns.
Hazard overview: UN 1761 presents corrosive solution, respiratory mist/vapor and copper-contaminated runoff hazards. It is usually aqueous, but incompatible acids or oxidizers may increase heat or fuming.
Response guidance: For a UN 1761 incident, responders should verify the product with shipping papers, package markings, SDS and ERG Guide 154. Establish incident command, isolate the area, stay upwind, prevent incompatible contact, control runoff and choose entry or fire-control actions based on monitoring, SDS and local SOP.
Firefighter training notes: Training for UN 1761 should emphasize corrosive exposure routes, water or oxidizer incompatibility where applicable, air monitoring, PPE selection, decontamination and runoff containment. Use ERG 154, SDS and local SOP.
Regulatory context: Cupriethylenediamine, solution is regulated as a hazardous material for transportation and emergency response purposes. Transportation, workplace exposure, spill reporting, pesticide/waste handling where applicable, storage and environmental requirements may vary by formulation, concentration, quantity and jurisdiction. Verify current requirements through shipping papers, SDS, facility documents and applicable DOT, OSHA, EPA, NFPA, state or local authority guidance.
Storage & handling: Cupriethylenediamine, solution should be stored in tightly closed compatible containers in a secure, cool, dry, well-ventilated hazardous-material area according to SDS and local procedures.
UN 1761 Quick Details
Common Hazards of UN 1761
- CORROSIVE alkaline copper-amine solution; contact may burn eyes, skin and respiratory tissue.
- Ammonia-like vapors or mist may irritate the respiratory tract.
- Copper-containing runoff may be toxic to aquatic life and contaminate equipment.
- Generally aqueous and not readily flammable, but fire may produce irritating or toxic gases.
- Reaction with incompatible acids or oxidizers may increase heat or fuming.
- Containers may rupture or fail when heated.
- Avoid skin/eye contact and prevent solution from entering drains.
Chemical Identity & Physical Properties
Deep blue to violet liquid solution with an ammonia-like odor. Aqueous solution of copper complexed with ethylenediamine.
| Also known as | Cupriethylenediamine solutionSchweizer's reagentCuamCopper ethylenediamine complexTetraamminecopper(II) hydroxide |
| CAS Number | 13426-91-0 |
| Appearance | Deep blue to violet liquid solution with an ammonia-like odor. Aqueous solution of copper complexed with ethylenediamine. |
| Flash Point | Not applicable (aqueous solution) |
| Boiling Point | Approximately 100C (212F), water-based solution |
| Vapor Density | Not applicable (non-volatile aqueous solution) |
| Water Reactivity | Miscible with water; already an aqueous solution |
Fireground Response Guidance — UN 1761
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for mist, ammonia-like vapor, fire or confined-space exposure. Chemical-resistant gloves, eye/face protection and protective clothing should be selected from SDS.
Isolation & Evacuation
First Actions for a UN 1761 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, fumes, dust, mist or spray and avoid skin or eye contact.
- Do not touch or walk through spilled material unless properly trained and wearing appropriate protective equipment.
- Prevent product, dust, solution or runoff from reaching drains and waterways where practical.
- Ventilate closed spaces before entering, but only if properly trained, equipped, monitored and authorized by incident command.
- Isolate the spill or leak area and expand the perimeter if vapor, dust, fire involvement, water reaction or unknown concentration is present.
- Use ERG Guide 154, shipping papers, SDS, air monitoring and incident command for protective actions.
📋 Copy & Share Field Card
UN 1761 — Cupriethylenediamine, solutionUse 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.