UN/NA Number Reference
DOT Class 3 Flammable Liquid placard

UN 2710: Dipropyl ketone

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 2710 is assigned the proper shipping name Dipropyl ketone in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 3 Flammable Liquid material, Packing Group III. Required label(s): 3.

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 128)

Hazards: HIGHLY FLAMMABLE. Vapors may form explosive mixtures with air. Vapors heavier than air. Runoff may pollute waterways.

Fire: Small: dry chemical, CO2, water spray, regular foam. Large: water spray, fog, regular foam. Do not use straight streams.

Spill: Eliminate ignition sources. Stop leak if safe. Use foam to suppress vapors. Absorb with earth, sand, or other absorbent. Prevent runoff to waterways.

Chemical and Physical Properties

Dipropyl ketone appears as a colorless liquid with a pleasant odor. Insoluble in water and less dense than water. Flash point 120 °F. Toxic by inhalation. A skin irritant. Used to make flavorings and as a solvent.

CAS Number: 123-19-3
Molecular Formula: C7H14O
Molecular Weight: 114.19 g/mol
Color / Form: Stable, colorless liquid
Odor: Pleasant odor
Boiling Point: 291 F
Melting Point: -27 °F (NIOSH, 2024)
Flash Point: 120 F
Autoignition: 430 °C
Specific Gravity: 0.82 (floats on water)
Vapor Pressure: 5 mmHg
Vapor Density: 3.93 (heavier than air)
Water Solubility: Insoluble
Log P: log Kow = 2.04

Regulatory Data

OSHA PEL
none
NIOSH REL
TWA 50 ppm (235 mg/m 3 )
IDLH
Not verified in this compiled record; consult the current NIOSH source.

Special Provisions

49 CFR 172.102 special provision codes for this entry: B1, IB3, T2, 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 2710 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.

Check the source: Current DOT Hazardous Materials Table · Official Emergency Response Guidebook. This compiled record is not a shipment classification or a complete response procedure.