UN/NA Number Reference
DOT Class 3 Flammable Liquid placard

UN 1296: Triethylamine

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 1296 is assigned the proper shipping name Triethylamine in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 3 Flammable Liquid material, Packing Group II. Required label(s): 3, 8.

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 132)

Hazards: HIGHLY FLAMMABLE. CORROSIVE. Causes burns. Vapors may form explosive mixture with air.

Fire: Alcohol-resistant foam, dry chemical, CO2. Do not use water jet. Cool containers.

Spill: Eliminate ignition sources. Do not touch. Stop leak if safe. Use foam.

Chemical and Physical Properties

Triethylamine appears as a clear colorless liquid with a strong ammonia to fish-like odor. Flash point 20 °F. Vapors irritate the eyes and mucous membranes. Less dense (6.1 lb / gal) than water. Vapors heavier than air. Produces toxic oxides of nitrogen when burned.

CAS Number: 121-44-8
Molecular Formula: C6H15N
Molecular Weight: 101.19 g/mol
Color / Form: Colorless liquid
Odor: Strong, ammoniacal ordor
Boiling Point: 192.7 F
Melting Point: -174.5 °F (NTP, 1992)
Flash Point: 20 F
Autoignition: 842 °F (USCG, 1999)
Specific Gravity: 0.729 (floats on water)
Vapor Pressure: 53.5 mmHg
Vapor Density: 3.48 (heavier than air)
Water Solubility: Soluble
Log P: log Kow = 1.45

Regulatory Data

CERCLA RQ (40 CFR 302.4)
5000 lb
OSHA PEL
TWA 25 ppm (100 mg/m 3 )
NIOSH REL
See Appendix D
IDLH
200 ppm
RCRA Waste Code(s)
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A release of this material at or above its CERCLA reportable quantity (5000 lb) requires immediate notification to the National Response Center at 800-424-8802.

Special Provisions

49 CFR 172.102 special provision codes for this entry: IB2, T7, TP1. 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 1296 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.