UN 2907 — Isosorbide dinitrate mixture
Placard: Flammable Solid. ERG Guide 133. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2907 is Isosorbide dinitrate mixture, a flammable nitrate mixture assigned to ERG Guide 133. Heat, friction and formulation sensitivity require control.
Hazard overview: FLAMMABLE solid nitrate mixture; may ignite by heat, sparks, flames, friction or impact. Nitrate ester mixtures may burn rapidly and can decompose violently if overheated or confined. Dust or powder can increase fire sensitivity and contamination spread.
Response guidance: For UN 2907, isolate the area, avoid dust/friction and use SCBA. Use compatible dry or specialist media, protect exposures and watch for re-ignition or violent decomposition under ERG 133.
Firefighter training notes: Training for UN 2907 should emphasize dust/friction control, compatible media, re-ignition, remote cooling, SCBA use and runoff/debris control. Use ERG 133, SDS and local SOP.
Regulatory context: Isosorbide dinitrate mixture is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on package type, quantity, formulation and jurisdiction; verify shipping papers, SDS or authority guidance.
Storage & handling: Isosorbide dinitrate mixture should be stored in tightly closed compatible containers away from heat, sparks, friction, moisture where incompatible, oxidizers/reducing agents as applicable and combustible contamination.
UN 2907 Quick Details
Common Hazards of UN 2907
- FLAMMABLE solid nitrate mixture; may ignite by heat, sparks, flames, friction or impact.
- Nitrate ester mixtures may burn rapidly and can decompose violently if overheated or confined.
- Dust or powder can increase fire sensitivity and contamination spread.
- Fire may produce nitrogen oxides and irritating/toxic gases.
- Containers may rupture or explode when heated.
- Runoff may carry toxic or energetic residue contamination.
- Exact formulation and dilution with inert material must be verified from SDS.
Chemical Identity & Physical Properties
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.
| 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 |
Fireground Response Guidance — UN 2907
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for fire, dust or smoke. Wear flame/heat-resistant and chemical-resistant protection; avoid dust clouds, friction and incompatible media.
Isolation & Evacuation
First Actions for a UN 2907 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind, uphill and upstream.
- Eliminate ignition sources if this can be done safely.
- Avoid breathing vapor, dust, gas, mist, smoke or aerosols and avoid skin or eye contact.
- Do not touch damaged containers or spilled material without proper training and PPE.
- Prevent contaminated liquid, dust, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 133, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 2907 — Isosorbide dinitrate mixtureUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.