☣️ UN 1732 • CLASS 8

UN 1732 — Antimony pentafluoride

Placard: Corrosive. ERG Guide 157. 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.

UN 1732 is Antimony pentafluoride, a hazardous material assigned to ERG Guide 157. Responders should verify the exact product with shipping papers, package markings and SDS before close action.

Hazard overview: UN 1732 presents corrosive, toxic, flammable or reactive hazards depending on the product and incident conditions. Use ERG, SDS and incident command to set isolation, PPE and control actions.

Response guidance: For a UN 1732 incident, responders should verify the product with shipping papers, package markings, SDS and ERG Guide 157. Establish incident command, isolate the area, stay upwind, prevent incompatible contact, control runoff and choose entry or fire-control actions based on monitoring, SDS and local SOP.

Firefighter training notes: Training for UN 1732 should emphasize corrosive/toxic exposure routes, air monitoring, PPE selection, decontamination, runoff containment and compatible extinguishing decisions. Use ERG 157, SDS and local SOP.

Regulatory context: Antimony pentafluoride is regulated as a hazardous material for transportation and emergency response purposes. Transportation, workplace exposure, spill reporting, waste handling, storage and environmental requirements may vary by concentration, formulation, quantity and jurisdiction. Verify current requirements through shipping papers, SDS, facility documents and applicable DOT, OSHA, EPA, NFPA, state or local authority guidance.

Storage & handling: Antimony pentafluoride should be stored in tightly closed compatible containers in a secure, cool, dry, well-ventilated hazardous-material area according to SDS and local procedures.

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UN 1732 Quick Details

UN 1732
Product name: Antimony pentafluoride
DOT Class: 8
Placard type: Corrosive
ERG Guide: 157 (check current ERG)
Initial isolation: ERG 157: isolate spill area 25-50m all directions; evacuate 800m downwind if tank/rail car involved in fire

Common Hazards of UN 1732

  • CORROSIVE material; inhalation, ingestion or skin/eye contact may cause severe injury.
  • Fire may produce irritating, corrosive and/or toxic gases.
  • Runoff may be corrosive and may pollute waterways.
  • Containers may rupture or fail when heated.
  • Specific hazards depend on the exact product, concentration and SDS.

Chemical Identity & Physical Properties

Colorless to pale yellow viscous liquid or oily solid with a pungent, acrid odor. Fumes strongly in moist air.

Also known asAntimony(V) fluorideAntimonic fluoridePentafluoroantimony
CAS Number7783-70-2
AppearanceColorless to pale yellow viscous liquid or oily solid with a pungent, acrid odor. Fumes strongly in moist air.
Flash PointNot applicable (non-flammable)
Boiling Point150C (302F) with decomposition
Vapor Density8.97 (much heavier than air)
Water ReactivityReacts violently with water releasing toxic and corrosive hydrogen fluoride (HF) fumes; generates significant heat
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.

Fireground Response Guidance — UN 1732

Extinguishing Media

Use extinguishing agents appropriate for the surrounding fire and SDS. Water spray may cool containers or reduce vapors only when runoff can be controlled as corrosive or toxic contamination.

PPE Requirements

⚠️ Level A recommended for spills; SCBA required; full chemical-resistant suit; neoprene or Viton gloves

Use positive-pressure SCBA for mist, vapor, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing selected from SDS for corrosive liquid contact.

Isolation & Evacuation

ERG 157: isolate spill area 25-50m all directions; evacuate 800m downwind if tank/rail car involved in fire
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 157).

First Actions for a UN 1732 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.
  • Avoid breathing vapors, fumes, dust or mist and avoid skin or eye contact.
  • Do not touch or walk through spilled 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 spill or leak area and expand the perimeter if vapor, dust, fire involvement, water reaction or unknown concentration is present.
  • Use ERG Guide 157, shipping papers, SDS, air monitoring and incident command for protective actions.
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📋 Copy & Share Field Card

UN 1732 — Antimony pentafluoride
HAZMAT RADIO NOTE — UN 1732 Product: Antimony pentafluoride Class 8 / Corrosive / ERG 157 PPE: Level A recommended for spills; SCBA required; full chemical-resistant suit; neoprene or Viton gloves ISOLATION: ERG 157: isolate spill area 25-50m all directions; evacuate 800m downwind if tank/rail car involved in fire ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO

Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.

SMS WhatsApp
=== IC HAZMAT BRIEFING === UN 1732 — Antimony pentafluoride Class: 8 | Placard: Corrosive | ERG Guide: 157 Appearance: Colorless to pale yellow viscous liquid or oily solid with a pungent, acrid odor. Fumes strongly in moist air. Water Reactivity: Reacts violently with water releasing toxic and corrosive hydrogen fluoride (HF) fumes; generates significant heat Extinguishing: Use extinguishing agents appropriate for the surrounding fire and SDS. Water spray may cool containers or reduce vapors only when runoff can be controlled as corrosive or toxic contamination. PPE: Level A recommended for spills; SCBA required; full chemical-resistant suit; neoprene or Viton gloves Isolation: ERG 157: isolate spill area 25-50m all directions; evacuate 800m downwind if tank/rail car involved in fire — Key Hazards — • CORROSIVE material; inhalation, ingestion or skin/eye contact may cause severe injury. • Fire may produce irritating, corrosive and/or toxic gases. • Runoff may be corrosive and may pollute waterways. — First Actions — • 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. • Avoid breathing vapors, fumes, dust or mist and avoid skin or eye contact. SOURCE: allfirefighter.com/hazmat/un/antimony-pentafluoride-un-1732 | Always use current ERG + SOP/SOGIC BRIEFING

Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.

SMS (short)
UN1732 Antimony pentafluoride Cls8 ERG157 | allfirefighter.com/hazmat/un/antimony-pentafluoride-un-1732SMS / 160 CHAR

Use for: Quick text to command or incoming units. Fits in a single SMS.

⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions. Page: https://allfirefighter.com/hazmat/un/antimony-pentafluoride-un-1732

Related UN Numbers in Class 8

Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
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Frequently Asked Questions about UN 1732

UN 1732 is Antimony pentafluoride, a hazardous material assigned to ERG Guide 157.

Flammability depends on the exact material and SDS; verify before action.

ERG Guide 157 applies to UN 1732 for initial isolation, protective actions and first response guidance.

UN 1732 presents corrosive, toxic, flammable or reactive hazards depending on the product and incident conditions. Use ERG, SDS and incident command to set isolation, PPE and control actions.

Use positive-pressure SCBA for mist, vapor, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing selected from SDS for corrosive liquid contact.
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.