☣️ UN 1715 • CLASS 8
UN 1715 — Acetic anhydride
Placard: Corrosive. ERG Guide 137. 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.
Acetic anhydride is a corrosive and toxic substance that can produce irritating, corrosive, and/or toxic gases. It is a colorless liquid with a strong, pungent, vinegar-like acetic odor.
Hazard overview: Acetic anhydride is corrosive and toxic, and can produce irritating, corrosive, and/or toxic gases. It can cause severe burns and respiratory damage.
Response guidance: In case of emergency, evacuate the area immediately and call the fire department. Wear Level B minimum PPE with full-face SCBA required, including acid-resistant protective clothing and gloves.
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UN 1715 Quick Details
UN 1715
Product name: Acetic anhydride
DOT Class: 8
Placard type: Corrosive
ERG Guide: 137 (check current ERG)
Initial isolation: ERG 137: isolate spill 50m all directions; if tank/railcar involved in fire, isolate 800m all directions and evacuate initially
Common Hazards of UN 1715
- CORROSIVE and/or TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance
- Fire will produce irritating, corrosive and/or toxic gases.
- Reaction with water may generate much heat that will increase the concentration of fumes in the air.
- Contact with molten substance may cause severe burns to skin and eyes.
- Runoff from fire control or dilution water may cause environmental contamination.
- EXCEPT FOR ACETIC ANHYDRIDE (UN1715), THAT IS FLAMMABLE, some of these materials may
- May ignite combustibles (wood, paper, oil, clothing, etc.).
- Substance will react with water (some violently), releasing corrosive and/or toxic gases and runoff.
Chemical Identity & Physical Properties
Acetic anhydride is a colorless liquid with a strong, pungent, vinegar-like acetic odor.
| Also known as | Acetyl oxideAcetic oxideEthanoic anhydrideAcetyl anhydrideAcetanhydride |
| CAS Number | 108-24-7 |
| Appearance | Colorless liquid with a strong, pungent, vinegar-like acetic odor. Fumes in moist air. |
| Flash Point | 49C (120F) |
| Boiling Point | 140C (284F) |
| Vapor Density | 3.5 (heavier than air) |
| Water Reactivity | Reacts violently with water producing heat and acetic acid vapors. Avoid water contact. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1715
Extinguishing Media
Dry chemical, CO2, alcohol-resistant foam; avoid direct water application
PPE Requirements
⚠️ Level B minimum; full face SCBA required; acid-resistant protective clothing and gloves
Wear Level B minimum PPE with full-face SCBA required, including acid-resistant protective clothing and gloves.
Isolation & Evacuation
ERG 137: isolate spill 50m all directions; if tank/railcar involved in fire, isolate 800m all directions and evacuate initially
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 137).
First Actions for a UN 1715 Incident
- 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 in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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📋 Copy & Share Field Card
UN 1715 — Acetic anhydrideHAZMAT RADIO NOTE — UN 1715
Product: Acetic anhydride
Class 8 / Corrosive / ERG 137
PPE: Level B minimum; full face SCBA required; acid-resistant protective clothing and gloves
ISOLATION: ERG 137: isolate spill 50m all directions; if tank/railcar involved in fire, isolate 800m all directions and evacuate initially
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 1715 — Acetic anhydride
Class: 8 | Placard: Corrosive | ERG Guide: 137
Appearance: Colorless liquid with a strong, pungent, vinegar-like acetic odor. Fumes in moist air.
Water Reactivity: Reacts violently with water producing heat and acetic acid vapors. Avoid water contact.
Extinguishing: Dry chemical, CO2, alcohol-resistant foam; avoid direct water application
PPE: Level B minimum; full face SCBA required; acid-resistant protective clothing and gloves
Isolation: ERG 137: isolate spill 50m all directions; if tank/railcar involved in fire, isolate 800m all directions and evacuate initially
— Key Hazards —
• CORROSIVE and/or TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance
• Fire will produce irritating, corrosive and/or toxic gases.
• Reaction with water may generate much heat that will increase the concentration of fumes in the air.
— First Actions —
• 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 in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
SOURCE: allfirefighter.com/hazmat/un/1715 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN1715 Acetic anhydride Cls8 ERG137 | ERG 137: isolate spill 50m all directions; if tank/railcar involved in fire, iso | allfirefighter.com/hazmat/un/1715SMS / 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/acetic-anhydride-un-1715
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Frequently Asked Questions about UN 1715
Yes
CORROSIVE and/or TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance.
Avoid contact with water and wear Level B minimum PPE with full-face SCBA required.
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.