UN/NA Number Reference
DOT Class 2.1 Flammable Gas placard

UN 1087: Vinyl methyl ether, stabilized

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 1087 is assigned the proper shipping name Vinyl methyl ether, stabilized in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 2.1 Flammable Gas material. Required label(s): 2.1.

Packing group indicates the degree of danger within a hazard class: PG I is high danger, PG II medium, PG III low. The proper shipping name, hazard class, UN number, and packing group together form the basic shipping description that must appear on shipping papers and, where required, on the package and placard.

Emergency Response (ERG Guide 116)

Hazards: May polymerize explosively when heated or involved in fire. Extremely flammable. BLEVE risk.

Fire: Fight fire from maximum distance. Do not extinguish unless flow stopped. Cool containers with water.

Spill: Eliminate all ignition sources. Stop leak if safe.

Chemical and Physical Properties

Vinyl methyl ether appears as a colorless gas with a sweet odor. Shipped as a liquefied gas under own vapor pressure. Contact with the liquid may cause frostbite. Easily ignited. Vapors are heavier than air. Leaks may either be liquid or vapor. May asphyxiate by the displacement of air. Under prolonged exposure to fire or intense heat containers may rupture violently and rocket.

CAS Number: 107-25-5
Molecular Formula: C3H6O
Molecular Weight: 58.08 g/mol
Color / Form: Colorless, compressed gas or colorless liquid
Odor: Sweet, pleasant
Boiling Point: 41.9 F
Melting Point: -188 °F (USCG, 1999)
Flash Point: -69 F
Autoignition: 549 °F (USCG, 1999)
Specific Gravity: 0.777 (floats on water)
Vapor Pressure: 1316.0 [mmHg]
Vapor Density: 2.0 (heavier than air)
Water Solubility: In water, 0.97 wt% /15,000 mg/L/ at 20 C

Special Provisions

49 CFR 172.102 special provision codes for this entry: 387, B44, T50. These codes modify the general requirements (packaging, quantity limits, exceptions) for this specific material. Look up each code in 49 CFR 172.102 for the full text.

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Reference data compiled from the DOT Hazardous Materials Table (49 CFR 172.101), the 2024 Emergency Response Guidebook, and public chemical databases (PubChem, NIOSH, EPA). Always verify the correct shipping description against the current regulation and the manufacturer's SDS Section 14 before shipping.