☣️ UN 1693 • CLASS 6
Tear gas substance, liquid, n.o.s.
Placard: Toxic. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ 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.
Advertisement
Quick details
UN 1693
Class: 6
Placard type: Toxic
ERG: Guide 159 (check current ERG)
Isolation: ERG 159: isolate spill area 25m (75ft) all directions; evacuate immediate area; increase distances for large spills or fire involvement
Chemical & Response Details
| Also known as | Lachrymator liquidLacrimator substance liquidIrritant agent liquidRiot control agent liquidCS agent liquidCN agent liquid |
| Appearance | Liquid of varying color depending on specific agent, typically colorless to yellow or brown. Pungent, irritating odor. Liquid state at room temperature. |
| Flash Point | Varies by formulation, typically 25-80C (77-176F) depending on solvent and active agent |
| Boiling Point | Varies by formulation, typically 150-250C (302-482F) depending on carrier solvent |
| Vapor Density | Heavier than air (typically 3-5 times air density) |
| Water Reactivity | No significant reaction with water, though may form emulsions or suspensions |
| Extinguishing | Alcohol-resistant foam, CO2, dry chemical, water spray for cooling containers |
| PPE | ⚠️ Level A minimum for unknown concentrations; full face respirator with organic vapor and HEPA cartridges; chemical resistant suit, gloves and boots; SCBA required in enclosed spaces |
| Isolation | ERG 159: isolate spill area 25m (75ft) all directions; evacuate immediate area; increase distances for large spills or fire involvement |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Inhalation of vapors or dust is extremely irritating.
- May cause burning of eyes and lachrymation (flow of tears).
- May cause coughing, difficult breathing and nausea.
- Brief exposure effects last only a few minutes.
- Exposure in an enclosed area may be very harmful.
- Fire will produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may cause environmental contamination.
- Some of these materials may burn, but none ignite readily.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- Consider initial downwind evacuation for at least 100 meters (330 feet).
Advertisement
📋 Copy & Share
UN 1693 — Tear gas substance, liquid, n.o.s. HAZMAT RADIO NOTE — UN 1693
Product: Tear gas substance, liquid, n.o.s.
Class 6 / Toxic / ERG 159
PPE: Level A minimum for unknown concentrations; full face respirator with organic vapor and HEPA cartridges; chemical resistant suit, gloves and boots; SCBA required in enclosed spaces
ISOLATION: ERG 159: isolate spill area 25m (75ft) all directions; evacuate immediate area; increase distances for large spills or fire involvement
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 1693 — Tear gas substance, liquid, n.o.s.
Class: 6 | Placard: Toxic | ERG Guide: 159
Appearance: Liquid of varying color depending on specific agent, typically colorless to yellow or brown. Pungent, irritating odor. Liquid state at room temperature.
Water Reactivity: No significant reaction with water, though may form emulsions or suspensions
Extinguishing: Alcohol-resistant foam, CO2, dry chemical, water spray for cooling containers
PPE: Level A minimum for unknown concentrations; full face respirator with organic vapor and HEPA cartridges; chemical resistant suit, gloves and boots; SCBA required in enclosed spaces
Isolation: ERG 159: isolate spill area 25m (75ft) all directions; evacuate immediate area; increase distances for large spills or fire involvement
— Key Hazards —
• Inhalation of vapors or dust is extremely irritating.
• May cause burning of eyes and lachrymation (flow of tears).
• May cause coughing, difficult breathing and nausea.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Keep unauthorized personnel away.
• Stay upwind, uphill and/or upstream.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/1693 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1693 Tear gas substance, liquid, n.o.s. Cls6 ERG159 | allfirefighter.com/hazmat/un/1693SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS. Includes link to full page.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions. Page: https://allfirefighter.com/hazmat/un/1693
Advertisement
FAQ
Inhalation of vapors or dust is extremely irritating. May cause burning of eyes and lachrymation (flow of tears). May cause coughing, difficult breathing and nausea. Brief exposure effects last only a few minutes. Exposure in an enclosed area may be very harmful. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause environmental contamination. Some of these materials may burn, but none ignite readily.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Level A minimum for unknown concentrations; full face respirator with organic vapor and HEPA cartridges; chemical resistant suit, gloves and boots; SCBA required in enclosed spaces
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 159 and your department SOP/SOG for incident-specific protective actions.
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.