UN/NA Number Reference
DOT Class 3 Flammable Liquid placard

UN 2243: Cyclohexyl acetate

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 2243 is assigned the proper shipping name Cyclohexyl acetate 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 130)

Hazards: Flammable. Toxic vapor. Harmful if inhaled or absorbed. May accumulate in low areas.

Fire: Dry chemical, CO2, foam, water spray. Do not use straight streams.

Spill: Eliminate ignition sources. Stop leak. Absorb with sand/earth. Prevent waterway contamination.

Chemical and Physical Properties

Cyclohexyl acetate appears as a colorless liquid. Flash point 136 °F. Slightly less dense than water and insoluble in water. Vapors are much heavier than air and may be narcotic in high concentrations. May emit acrid smoke and irritating fumes when heated to high temperatures. Used as a solvent and in making rubber.

CAS Number: 622-45-7
Molecular Formula: C8H14O2
Molecular Weight: 142.20 g/mol
Color / Form: COLORLESS OILY LIQUID
Odor: ODOR REMINISCENT OF AMYL ACETATE
Boiling Point: 350 F
Melting Point: Freezing point = -65 °C
Flash Point: 136 F
Autoignition: 635 °F (335 °C)
Specific Gravity: 0.966 (floats on water)
Vapor Pressure: 11.0 [mmHg]
Vapor Density: 4.9 (heavier than air)
Water Solubility: Very soluble in ethyl ether and ethanol.
Log P: 2.640
pH: ACID VALUE: 0.2 MAX

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 2243 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.