☣️ UN 2907 • CLASS 4
Isosorbide dinitrate mixture
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 2907
Class: 4
Placard type: Flammable Solid
ERG: Guide 133 (check current ERG)
Isolation: ERG 133: isolate spill area 25-50m in all directions; if fire or large spill, isolate 800m and evacuate downwind
Chemical & Response Details
| Also known as | Isosorbide dinitrateISDNIsordilDilatrate-SR1,4:3,6-Dianhydro-D-glucitol dinitrateSorbide nitrate |
| CAS Number | 87-33-2 |
| Appearance | White to off-white crystalline powder or granules, odorless or faint characteristic odor. Solid at room temperature, often formulated in diluted mixtures with inert materials to reduce sensitivity. |
| Flash Point | Not applicable (explosive solid) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Slightly soluble in water; no violent reaction with water |
| Extinguishing | Dry chemical, CO2, sand, or earth; avoid water spray on burning material |
| PPE | ⚠️ Level B minimum; SCBA required in fire or confined spaces; protective gloves and clothing to prevent skin contact |
| Isolation | ERG 133: isolate spill area 25-50m in all directions; if fire or large spill, isolate 800m and evacuate downwind |
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 friction, heat, sparks or flames.
- Some may burn rapidly with flare-burning effect.
- Powders, dusts, shavings, borings, turnings or cuttings may explode or burn with explosive violence.
- Substance may be transported in a molten form at a temperature that may be above its flash point.
- May re-ignite after fire is extinguished.
- Fire may produce irritating and/or toxic gases.
- Contact may cause burns to skin and eyes.
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.
- Isolate spill or leak area for at least 25 meters (75 feet) in all directions.
- Consider initial downwind evacuation for at least 100 meters (330 feet).
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UN 2907 — Isosorbide dinitrate mixture HAZMAT RADIO NOTE — UN 2907
Product: Isosorbide dinitrate mixture
Class 4 / Flammable Solid / ERG 133
PPE: Level B minimum; SCBA required in fire or confined spaces; protective gloves and clothing to prevent skin contact
ISOLATION: ERG 133: isolate spill area 25-50m in all directions; if fire or large spill, isolate 800m and evacuate downwind
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 2907 — Isosorbide dinitrate mixture
Class: 4 | Placard: Flammable Solid | ERG Guide: 133
Appearance: White to off-white crystalline powder or granules, odorless or faint characteristic odor. Solid at room temperature, often formulated in diluted mixtures with inert materials to reduce sensitivity.
Water Reactivity: Slightly soluble in water; no violent reaction with water
Extinguishing: Dry chemical, CO2, sand, or earth; avoid water spray on burning material
PPE: Level B minimum; SCBA required in fire or confined spaces; protective gloves and clothing to prevent skin contact
Isolation: ERG 133: isolate spill area 25-50m in all directions; if fire or large spill, isolate 800m and evacuate downwind
— Key Hazards —
• Flammable/combustible material.
• May be ignited by friction, heat, sparks or flames.
• Some may burn rapidly with flare-burning effect.
— 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.
• Isolate spill or leak area for at least 25 meters (75 feet) in all directions.
SOURCE: allfirefighter.com/hazmat/un/2907 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2907 Isosorbide dinitrate mixture Cls4 ERG133 | allfirefighter.com/hazmat/un/2907SMS / 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/2907
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FAQ
Flammable/combustible material. May be ignited by friction, heat, sparks or flames. Some may burn rapidly with flare-burning effect. Powders, dusts, shavings, borings, turnings or cuttings may explode or burn with explosive violence. Substance may be transported in a molten form at a temperature that may be above its flash point. May re-ignite after fire is extinguished. Fire may produce irritating and/or toxic gases. Contact may cause burns to skin and eyes.
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 in fire or confined spaces; protective gloves and clothing to prevent skin contact
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 133 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.