UN 1941: Dibromodifluoromethane
DOT Classification and Shipping
UN 1941 is assigned the proper shipping name Dibromodifluoromethane in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 9 Miscellaneous Dangerous Goods material, Packing Group III. Required label(s): 9.
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 171)
Hazards: May cause irritation. Some materials may be harmful if inhaled or swallowed.
Fire: Use water spray, foam, dry chemical, CO2.
Spill: Absorb with earth, sand, or vermiculite. Prevent runoff.
Chemical and Physical Properties
Dibromodifluoromethane is a colorless, nonflammable liquid. It may cause illness from ingestion and may be irritating to skin. If exposed to high temperatures it may emit toxic fumes. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Since it is a liquid it can easily penetrate the soil and contaminate groundwater and nearby streams. It is used as a fire extinguishing agent.
Regulatory Data
Special Provisions
49 CFR 172.102 special provision codes for this entry: T11, TP2. 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.