☣️ UN 0133 • CLASS 1
Mannitol hexanitrate, wetted with not less than 40% water
Placard: Explosive 1.1D. 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.
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Quick details
UN 0133
Class: 1
Placard type: Explosive 1.1D
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: isolate 500m all directions in all cases; evacuate 800m if large fire or container exposed to fire; treat as mass explosion hazard
Chemical & Response Details
| Also known as | NitromanniteHexanitromanniteMannitol hexanitrate esterMHNNitranitol |
| CAS Number | 15825-70-4 |
| Appearance | White to pale yellow crystalline solid when wetted. Odorless or slight nitrous odor. Shipped as a water-dampened paste or slurry to reduce explosive sensitivity. |
| Flash Point | Not applicable (explosive solid) |
| Boiling Point | Not applicable (decomposes explosively before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction with water; water acts as desensitizer and must remain present |
| Extinguishing | Water spray to maintain wetting; do not allow to dry; alcohol-resistant foam for surrounding fires |
| PPE | ⚠️ Level A with SCBA required; full explosive ordnance disposal protective equipment recommended; avoid all static, friction, and shock |
| Isolation | ERG 112: isolate 500m all directions in all cases; evacuate 800m if large fire or container exposed to fire; treat as mass explosion hazard |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Explosion hazard if dried out
- Sensitive to heat, shock, friction
- Runoff may be hazardous
First actions (field-minded)
- CALL 911. Then call emergency response number on shipping paper.
- Isolate area; stage upwind
- Keep product wet — do not allow to dry out
- Request Hazmat + law enforcement
- Consult current ERG Guide 112 and SOP/SOG
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UN 0133 — Mannitol hexanitrate, wetted with not le HAZMAT RADIO NOTE — UN 0133
Product: Mannitol hexanitrate, wetted with not less than 40% water
Class 1 / Explosive 1.1D / ERG 112
PPE: Level A with SCBA required; full explosive ordnance disposal protective equipment recommended; avoid all static, friction, and shock
ISOLATION: ERG 112: isolate 500m all directions in all cases; evacuate 800m if large fire or container exposed to fire; treat as mass explosion hazard
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 0133 — Mannitol hexanitrate, wetted with not less than 40% water
Class: 1 | Placard: Explosive 1.1D | ERG Guide: 112
Appearance: White to pale yellow crystalline solid when wetted. Odorless or slight nitrous odor. Shipped as a water-dampened paste or slurry to reduce explosive sensitivity.
Water Reactivity: No significant reaction with water; water acts as desensitizer and must remain present
Extinguishing: Water spray to maintain wetting; do not allow to dry; alcohol-resistant foam for surrounding fires
PPE: Level A with SCBA required; full explosive ordnance disposal protective equipment recommended; avoid all static, friction, and shock
Isolation: ERG 112: isolate 500m all directions in all cases; evacuate 800m if large fire or container exposed to fire; treat as mass explosion hazard
— Key Hazards —
• Explosion hazard if dried out
• Sensitive to heat, shock, friction
• Runoff may be hazardous
— First Actions —
• CALL 911. Then call emergency response number on shipping paper.
• Isolate area; stage upwind
• Keep product wet — do not allow to dry out
• Request Hazmat + law enforcement
SOURCE: allfirefighter.com/hazmat/un/0133 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0133 Mannitol hexanitrate, wetted with not less than 40% water Cls1 ERG112 | allfirefighter.com/hazmat/un/0133SMS / 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/0133
Related UN numbers (same class)
Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
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FAQ
Explosion hazard if dried out Sensitive to heat, shock, friction Runoff may be hazardous
CALL 911. Then call emergency response number on shipping paper. Isolate area; stage upwind Keep product wet — do not allow to dry out
Level A with SCBA required; full explosive ordnance disposal protective equipment recommended; avoid all static, friction, and shock
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 112 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.