UN/NA Number Reference

DOT Class 4.2 Spontaneously Combustible placard

UN 1362: Carbon, activated

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 1362 is assigned the proper shipping name Carbon, activated in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 4.2 Spontaneously Combustible material, Packing Group III. Required label(s): 4.2.

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 133)

Hazards: Flammable. May be ignited by friction, heat, sparks. May burn rapidly with flare-burning effect.

Fire: Water spray, foam, dry chemical. Some may be extinguished with CO2.

Spill: Eliminate ignition sources. Do not touch. Cover with dry earth, sand, or non-combustible material.

Chemical and Physical Properties

Carbon, activated is a black grains that have been treated to improve absorptive ability. May heat spontaneously if not properly cooled after manufacture.

CAS Number: 97793-37-8

Molecular Formula: C

Molecular Weight: 12.011 g/mol

Color / Form: Steel gray to black greasy feeling solid.

Odor: Odorless.

Boiling Point: Sublimes

Melting Point: Melting point equals greater than 3500 °C

Autoignition: Activated carbon showed an auto-ignition temperature in flowing air of 452-518 °C. Presence of 5% of the base ('triethylenediamine') adsorbed on the carbon reduced the auto-ignition temperature to 230-260 °C.

Specific Gravity: The apparent density of beech charcoal is 0.45 g/mL and that of pine charcoal is 0.28 g/mL

Vapor Pressure: 1 mm Hg at 3586 C

Water Solubility: Solubility in water: none

Special Provisions

49 CFR 172.102 special provision codes for this entry: IB8, IP3, T1, TP33, W31. 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 1362 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.