☣️ UN 2802 • CLASS 8
UN 2802 — Copper chloride
Placard: Corrosive. ERG Guide 154. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ This page is a quick-reference aid. For real incidents: stage upwind, isolate, deny entry, request Hazmat early, and consult the current ERG + SOP/SOG.
Copper chloride is a corrosive copper salt shipped as UN 2802. It is commonly encountered as a blue-green solid or powder that can form acidic solutions in water.
Hazard overview: The main risks are corrosive dust, solution contact and contaminated runoff. Heating can produce irritating chloride-containing fumes, and copper salts can be environmentally toxic.
Response guidance: Avoid raising dust, isolate the area and keep runoff contained. Use water spray only when it will not spread contamination; dry chemical or carbon dioxide may be used for surrounding fires.
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UN 2802 Quick Details
UN 2802
Product name: Copper chloride
DOT Class: 8
Placard type: Corrosive
ERG Guide: 154 (check current ERG)
Initial isolation: ERG 154: isolate spill area 25-50m in all directions; if molten material involved, increase distances significantly
Common Hazards of UN 2802
- Copper chloride is corrosive and harmful if inhaled, ingested or contacted.
- Dust can irritate or injure eyes, skin and the respiratory tract.
- Dissolution in water forms an acidic solution and may release heat.
- Fire may produce irritating metal chloride fumes and hydrogen chloride.
- Runoff can be toxic to aquatic life and should be contained.
- Contact with incompatible acids, bases or reactive metals may intensify hazards.
- Containers may fail when heated or physically damaged.
Chemical Identity & Physical Properties
Copper chloride is generally a blue-green hygroscopic crystalline solid or powder. It dissolves in water to form a heat-releasing acidic solution.
| Also known as | Cupric chlorideCopper(II) chlorideCopper dichlorideCupric chloride dihydrate |
| CAS Number | 7447-39-4 |
| Appearance | Blue-green crystalline solid or powder, hygroscopic, odorless to slight hydrochloric acid odor when exposed to moist air. |
| Flash Point | Not applicable (non-flammable solid) |
| Boiling Point | 993C (1819F) - decomposes |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Dissolves in water producing heat and acidic solution; no violent reaction |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2802
Extinguishing Media
Use water spray, dry chemical, or CO2; avoid contact with acids
PPE Requirements
⚠️ Level C minimum; chemical-resistant gloves, goggles, and protective clothing required; SCBA for spills or confined spaces
Use chemical-resistant gloves, eye protection and protective clothing. SCBA is required for dust clouds, confined spaces, fire smoke or unknown airborne concentrations.
Isolation & Evacuation
ERG 154: isolate spill area 25-50m in all directions; if molten material involved, increase distances significantly
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 154).
First Actions for a UN 2802 Incident
- Call 911 and the emergency response number shown on the shipping papers or container documents.
- Keep unauthorized personnel away and establish an isolation perimeter before entry.
- Stay upwind, uphill and upstream; keep responders out of vapors, dusts and runoff.
- Avoid breathing vapors, dust, mist or smoke and avoid skin or eye contact.
- Do not touch damaged containers or spilled material unless properly trained and protected.
- Ventilate confined spaces only when personnel are trained, equipped and monitored.
- Use ERG guidance, SDS, shipping papers and air monitoring to confirm protective actions.
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📋 Copy & Share Field Card
UN 2802 — Copper chlorideHAZMAT RADIO NOTE — UN 2802
Product: Copper chloride
Class 8 / Corrosive / ERG 154
PPE: Level C minimum; chemical-resistant gloves, goggles, and protective clothing required; SCBA for spills or confined spaces
ISOLATION: ERG 154: isolate spill area 25-50m in all directions; if molten material involved, increase distances significantly
ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO
Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
=== IC HAZMAT BRIEFING ===
UN 2802 — Copper chloride
Class: 8 | Placard: Corrosive | ERG Guide: 154
Appearance: Blue-green crystalline solid or powder, hygroscopic, odorless to slight hydrochloric acid odor when exposed to moist air.
Water Reactivity: Dissolves in water producing heat and acidic solution; no violent reaction
Extinguishing: Use water spray, dry chemical, or CO2; avoid contact with acids
PPE: Level C minimum; chemical-resistant gloves, goggles, and protective clothing required; SCBA for spills or confined spaces
Isolation: ERG 154: isolate spill area 25-50m in all directions; if molten material involved, increase distances significantly
— Key Hazards —
• Copper chloride is corrosive and harmful if inhaled, ingested or contacted.
• Dust can irritate or injure eyes, skin and the respiratory tract.
• Dissolution in water forms an acidic solution and may release heat.
— First Actions —
• Call 911 and the emergency response number shown on the shipping papers or container documents.
• Keep unauthorized personnel away and establish an isolation perimeter before entry.
• Stay upwind, uphill and upstream; keep responders out of vapors, dusts and runoff.
• Avoid breathing vapors, dust, mist or smoke and avoid skin or eye contact.
SOURCE: allfirefighter.com/hazmat/un/copper-chloride-un-2802 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN2802 Copper chloride Cls8 ERG154 | allfirefighter.com/hazmat/un/copper-chloride-un-2802SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/copper-chloride-un-2802
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Frequently Asked Questions about UN 2802
No. Copper chloride is not flammable, but fire can produce irritating or corrosive fumes.
It can dissolve and release heat, forming an acidic corrosive solution.
Copper-containing runoff can be corrosive and toxic to aquatic environments.
Use eye and skin protection plus respiratory protection; SCBA is appropriate for heavy dust or fire conditions.
Sources (high level): DOT/PHMSA marking & class concepts + ERG usage principles.
This page does not reproduce ERG guide text—always consult the current ERG for incident-specific protective actions.