☣️ UN 1348 • CLASS 4
Sodium dinitro-o-cresolate, wetted with not less than 15% water
Placard: Flammable Solid. 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 1348
Class: 4
Placard type: Flammable Solid
ERG: Guide 113 (check current ERG)
Isolation: ERG 113: isolate 25m all directions initially; if fire or dried out, treat as explosive and evacuate 800m+
Chemical & Response Details
| Also known as | DNOC sodium saltSodium 4,6-dinitro-o-cresylateSodium 2-methyl-4,6-dinitrophenoxideDinitro-o-cresol sodium saltSDNOC |
| CAS Number | 2312-76-7 |
| Appearance | Yellow to orange crystalline solid or powder. Slight phenolic odor. Solid at room temperature. Wetted with water for safety during transport. |
| Flash Point | Not applicable when wetted; dried material is explosive |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Soluble in water; wetting agent keeps material stable |
| Extinguishing | Water spray to keep wet, CO2, dry chemical; do NOT allow to dry out |
| PPE | ⚠️ Level B minimum; SCBA required; chemical-resistant suit; avoid any ignition sources |
| Isolation | ERG 113: isolate 25m all directions initially; if fire or dried out, treat as explosive and evacuate 800m+ |
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.
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UN 1348 — Sodium dinitro-o-cresolate, wetted with HAZMAT RADIO NOTE — UN 1348
Product: Sodium dinitro-o-cresolate, wetted with not less than 15% water
Class 4 / Flammable Solid / ERG 113
PPE: Level B minimum; SCBA required; chemical-resistant suit; avoid any ignition sources
ISOLATION: ERG 113: isolate 25m all directions initially; if fire or dried out, treat as explosive and evacuate 800m+
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 1348 — Sodium dinitro-o-cresolate, wetted with not less than 15% water
Class: 4 | Placard: Flammable Solid | ERG Guide: 113
Appearance: Yellow to orange crystalline solid or powder. Slight phenolic odor. Solid at room temperature. Wetted with water for safety during transport.
Water Reactivity: Soluble in water; wetting agent keeps material stable
Extinguishing: Water spray to keep wet, CO2, dry chemical; do NOT allow to dry out
PPE: Level B minimum; SCBA required; chemical-resistant suit; avoid any ignition sources
Isolation: ERG 113: isolate 25m all directions initially; if fire or dried out, treat as explosive and evacuate 800m+
— 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/1348 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1348 Sodium dinitro-o-cresolate, wetted with not less than 15% water Cls4 ERG113 | allfirefighter.com/hazmat/un/1348SMS / 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/1348
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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; SCBA required; chemical-resistant suit; avoid any ignition sources
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.