☣️ UN 1336 • CLASS 4
Nitroguanidine, wetted with not less than 20% water
Placard: Flammable Solid. 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 1336
Class: 4
Placard type: Flammable Solid
ERG: Guide 113 (check current ERG)
Isolation: ERG 113: isolate spill 25m all directions; large spill isolate 50m, evacuate 300m downwind if fire; keep material wet at all times
Chemical & Response Details
| Also known as | NQPicrite1-NitroguanidineNitroguanidinGuanidine nitrate |
| CAS Number | 556-88-7 |
| Appearance | White to pale yellow crystalline solid, odorless. Wetted with water as a desensitizing agent to reduce explosive hazard. |
| Flash Point | Not applicable (explosive solid when dry) |
| Boiling Point | Not applicable (decomposes above 232C/450F) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction; water acts as desensitizer and must be maintained above 20% by weight |
| Extinguishing | Water spray, fog, or foam acceptable; do not allow to dry out |
| PPE | ⚠️ Level B minimum with SCBA; structural firefighter PPE provides limited protection; avoid shock, friction, or heat |
| Isolation | ERG 113: isolate spill 25m all directions; large spill isolate 50m, evacuate 300m downwind if fire; keep material wet at all times |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Flammable/combustible material.
- May be ignited by heat, sparks or flames.
- DRIED OUT material may explode if exposed to heat, flame, friction or shock; treat as an
- Keep material wet with water or treat as an explosive (GUIDE 112).
- Runoff to sewer may create fire or explosion hazard.
- Some are toxic and may be fatal if inhaled, ingested or absorbed through skin. Specifically,
- Contact may cause burns to skin and eyes.
- Fire may produce irritating, corrosive and/or toxic gases.
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 immediately for at least 100 meters (330 feet) in all directions.
- Consider initial evacuation for 500 meters (1/3 mile) in all directions.
Advertisement
📋 Copy & Share
UN 1336 — Nitroguanidine, wetted with not less tha HAZMAT RADIO NOTE — UN 1336
Product: Nitroguanidine, wetted with not less than 20% water
Class 4 / Flammable Solid / ERG 113
PPE: Level B minimum with SCBA; structural firefighter PPE provides limited protection; avoid shock, friction, or heat
ISOLATION: ERG 113: isolate spill 25m all directions; large spill isolate 50m, evacuate 300m downwind if fire; keep material wet at all times
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 1336 — Nitroguanidine, wetted with not less than 20% water
Class: 4 | Placard: Flammable Solid | ERG Guide: 113
Appearance: White to pale yellow crystalline solid, odorless. Wetted with water as a desensitizing agent to reduce explosive hazard.
Water Reactivity: No significant reaction; water acts as desensitizer and must be maintained above 20% by weight
Extinguishing: Water spray, fog, or foam acceptable; do not allow to dry out
PPE: Level B minimum with SCBA; structural firefighter PPE provides limited protection; avoid shock, friction, or heat
Isolation: ERG 113: isolate spill 25m all directions; large spill isolate 50m, evacuate 300m downwind if fire; keep material wet at all times
— Key Hazards —
• Flammable/combustible material.
• May be ignited by heat, sparks or flames.
• DRIED OUT material may explode if exposed to heat, flame, friction or shock; treat as an
— 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/1336 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1336 Nitroguanidine, wetted with not less than 20% water Cls4 ERG113 | allfirefighter.com/hazmat/un/1336SMS / 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/1336
Advertisement
FAQ
Flammable/combustible material. May be ignited by heat, sparks or flames. DRIED OUT material may explode if exposed to heat, flame, friction or shock; treat as an Keep material wet with water or treat as an explosive (GUIDE 112). Runoff to sewer may create fire or explosion hazard. Some are toxic and may be fatal if inhaled, ingested or absorbed through skin. Specifically, Contact may cause burns to skin and eyes. Fire may produce irritating, corrosive and/or toxic gases.
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 B minimum with SCBA; structural firefighter PPE provides limited protection; avoid shock, friction, or heat
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 113 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.