UN/NA Number Reference
DOT Class 5.1 Oxidizer placard

UN 1446: Barium nitrate

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 1446 is assigned the proper shipping name Barium nitrate in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 5.1 Oxidizer material, Packing Group II. Required label(s): 5.1, 6.1.

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 141)

Hazards: Oxidizer. TOXIC. May be fatal if inhaled or swallowed. Accelerates combustion.

Fire: Use flooding water. Do not use dry chemical, foam.

Spill: Do not touch. Keep combustibles away. Use water spray.

Chemical and Physical Properties

Barium nitrate appears as a white crystalline solid. Noncombustible, but accelerates burning of combustible materials. If large quantities are involved in fire or the combustible material is finely divided, an explosion may result. May explode under prolonged exposure to heat or fire. Toxic oxides of nitrogen produced in fires.

CAS Number: 10022-31-8
Molecular Formula: BaN2O6
Molecular Weight: 261.34 g/mol
Color / Form: White cubic crystals
Odor: Odorless
Boiling Point: Decomposes
Melting Point: 1098 °F (USCG, 1999)
Specific Gravity: 3.24 (sinks in water)
Vapor Pressure: Low
Water Solubility: 9 %

Regulatory Data

OSHA PEL
TWA 0.5 mg/m 3 [*Note: The PEL also applies to other soluble barium compounds (as Ba) except Barium sulfate.]
NIOSH REL
TWA 0.5 mg/m 3 [*Note: The REL also applies to other soluble barium compounds (as Ba) except Barium sulfate.]
IDLH
50 mg/m 3 (as Ba)

Special Provisions

49 CFR 172.102 special provision codes for this entry: IB8, IP2, IP4, T3, TP33. 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.

Need the full interactive record? Open UN 1446 in the SpillNerd lookup tool for the live database entry with placard graphics, GHS pictograms, full segregation tables, and synonym search. For another material, use the UN number and chemical lookup.

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.