UN/NA Number Reference
DOT Class 3 Flammable Liquid placard

UN 2842: Nitroethane

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 2842 is assigned the proper shipping name Nitroethane 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 129)

Hazards: Flammable. Irritating vapor. May cause dizziness. Toxic if inhaled or absorbed through skin.

Fire: Alcohol-resistant foam, dry chemical, CO2, water spray.

Spill: Eliminate ignition sources. Ventilate area. Absorb with earth or sand.

Chemical and Physical Properties

Nitroethane appears as a colorless oily liquid with a pleasant odor. Flash point of 82 °F. Decomposes above 350 °F. Density 1.052 g / cm3. Vapors much heavier than air. and insoluble in water. Vapors may irritate skin, eyes and mucous membranes. Produces toxic oxides of nitrogen during combustion. Used as a propellant and as a solvent.

CAS Number: 79-24-3
Molecular Formula: C2H5NO2
Molecular Weight: 75.07 g/mol
Color / Form: Colorless liquid
Odor: Moderate to strong disagreeable odor
Boiling Point: 239 F
Melting Point: -130 °F (NTP, 1992)
Flash Point: 106 F
Autoignition: 778 °F (USCG, 1999)
Specific Gravity: 1.05 (sinks in water)
Vapor Pressure: 21 mmHg at 77 F
Vapor Density: 2.58 (heavier than air)
Water Solubility: Slightly soluble
Log P: log Kow = 0.18
pH: pH of 0.01 M aqueous solution at 25 °C = 6.0

Regulatory Data

OSHA PEL
TWA 100 ppm (310 mg/m 3 )
NIOSH REL
TWA 100 ppm (310 mg/m 3 )
IDLH
1000 ppm

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 2842 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.