UN 1967 — Parathion and compressed gas mixture
Placard: Toxic Gas. ERG Guide 123. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 1967 is Parathion and compressed gas mixture, a toxic compressed gas mixture assigned to ERG Guide 123. The parathion component creates severe organophosphate poisoning and skin-absorption hazards.
Hazard overview: UN 1967 presents toxic inhalation, skin absorption, pesticide contamination, frostbite/contact and toxic fire-product hazards.
Response guidance: For a UN 1967 incident, verify the product with shipping papers, container markings, SDS and ERG Guide 123. Establish incident command, isolate the area, stay upwind, control ignition or downwind hazards, cool exposed containers from a protected distance when appropriate and base entry decisions on monitoring and local SOP.
Firefighter training notes: Training for UN 1967 should emphasize organophosphate poisoning, skin absorption, respiratory protection, medical coordination, pesticide runoff control and decontamination. Use ERG 123, SDS and local SOP.
Regulatory context: Parathion and compressed gas mixture is regulated as a hazardous material for transportation and emergency response purposes. Requirements for storage, workplace exposure, emergency planning, spill reporting and waste handling vary by exact product, concentration, quantity and jurisdiction. Verify current requirements through shipping papers, SDS, container markings and applicable DOT, OSHA, EPA, NFPA, state or local authority guidance.
Storage & handling: Parathion and compressed gas mixture should be stored in a secure, ventilated toxic-gas area with restricted access, leak detection/monitoring where required, compatible cylinder restraints and emergency response planning according to SDS and local code.
UN 1967 Quick Details
Common Hazards of UN 1967
- TOXIC compressed gas/aerosol mixture containing parathion; inhalation or skin absorption may be fatal.
- Parathion is an organophosphate cholinesterase inhibitor and can cause systemic poisoning.
- Compressed gas may collect in low or confined areas and may cause frostbite if liquefied.
- Fire may produce phosphorus oxides, nitrogen oxides, sulfur oxides and other toxic gases.
- Runoff and decontamination water may carry pesticide contamination.
- Containers may vent, rupture or rocket when heated.
- Avoid all skin contact; contaminated clothing can extend exposure.
Chemical Identity & Physical Properties
Pale yellow to dark brown liquid in normal form; when mixed with compressed gas, appears as pressurized aerosol or liquefied gas mixture. Characteristic garlic-like or petroleum odor.
| Also known as | O,O-diethyl O-(4-nitrophenyl) phosphorothioateDiethyl parathionThiophosE605Folidol |
| CAS Number | 56-38-2 |
| Appearance | Pale yellow to dark brown liquid in normal form; when mixed with compressed gas, appears as pressurized aerosol or liquefied gas mixture. Characteristic garlic-like or petroleum odor. |
| Flash Point | Not applicable (compressed gas mixture) |
| Boiling Point | Not applicable (pressurized mixture) |
| Vapor Density | Heavier than air (compressed gas will settle in low areas) |
| Water Reactivity | Slowly hydrolyzes in water; no violent reaction but toxic decomposition products may form |
Fireground Response Guidance — UN 1967
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA and fully encapsulating chemical protective clothing for close entry or unknown concentrations. Level A may be needed; avoid all skin contact and follow toxic inhalation hazard procedures.
Isolation & Evacuation
First Actions for a UN 1967 Incident
- CALL 911. Then call the emergency response telephone number on the shipping paper, if available.
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Treat the incident as a serious inhalation hazard; use Table 1/protective-action guidance where applicable.
- Avoid breathing gas, vapor, smoke or mist and avoid skin or eye contact.
- Do not touch damaged containers or spilled/released material unless properly trained and wearing appropriate protective equipment.
- Ventilate closed spaces before entering, but only if properly trained, equipped, monitored and authorized by incident command.
- Isolate the release area and expand the perimeter for fire involvement, cylinder heating, vapor accumulation, unknown gas identity or downwind exposure.
- Use ERG Guide 123, shipping papers, SDS, air monitoring and incident command for protective actions.
📋 Copy & Share Field Card
UN 1967 — Parathion and compressed gas 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.