UN/NA Number Reference
DOT Class 6.1 Toxic Substance placard

UN 1547: Aniline

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 1547 is assigned the proper shipping name Aniline in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 6.1 Toxic Substance material, Packing Group II. Required label(s): 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 153)

Hazards: TOXIC. Combustible. Corrosive. Causes burns. Toxic fumes when heated.

Fire: Small: dry chemical, CO2, water spray. Large: water spray, foam.

Spill: Do not touch. Stop leak if safe. Use water spray to reduce vapor.

Chemical and Physical Properties

Aniline appears as a yellowish to brownish oily liquid with a musty fishy odor. Melting point -6 °C; boiling point 184 °C; flash point 158 °F. Denser than water (8.5 lb / gal) and slightly soluble in water. Vapors heavier than air. Toxic by skin absorption and inhalation. Produces toxic oxides of nitrogen during combustion. Used to manufacture other chemicals, especially dyes, photographic chemicals, agricultural chemicals and others.

CAS Number: 62-53-3
Molecular Formula: C6H7N
Molecular Weight: 93.13 g/mol
Color / Form: Oily liquid; colorless when freshly distilled, darkens on exposure to air and light
Odor: Hedonic tone; pungent
Boiling Point: 363 to 367 F
Melting Point: 21 °F (EPA, 1998)
Flash Point: 158 F
Autoignition: 1139 °F (USCG, 1999)
Specific Gravity: 1.022 (sinks in water)
Vapor Pressure: 0.67 mmHg at 77 F
Vapor Density: 3.22 (heavier than air)
Water Solubility: 10 to 50 mg/mL at 73 F
Log P: 0.9
pH: pH = 8.1 (0.2 molar aq soln)

Regulatory Data

CERCLA RQ (40 CFR 302.4)
5000 lb
EPCRA TPQ (40 CFR 355)
1000 lb
OSHA PEL
TWA 5 ppm (19 mg/m 3 ) [skin]
NIOSH REL
Ca
IDLH
Ca [100 ppm]
RCRA Waste Code(s)
[object Object]

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, TP2. 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 1547 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.