UN/NA Number Reference
DOT Class 8 Corrosive placard

UN 2262: Dimethylcarbamoyl chloride

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 2262 is assigned the proper shipping name Dimethylcarbamoyl chloride in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 8 Corrosive material, Packing Group II. Required label(s): 8, 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 156)

Hazards: TOXIC or CORROSIVE. FLAMMABLE. Vapors may travel to ignition source.

Fire: Alcohol-resistant foam, dry chemical, CO2. Water spray for cooling only.

Spill: Eliminate ignition sources. Do not touch. Ventilate area.

Chemical and Physical Properties

Dimethylcarbamoyl chloride appears as a colorless to yellow liquid with a pungent odor. Burns to skin, eyes and mucous membranes. A lachrymator. Used to make dyes and pharmaceuticals.

CAS Number: 79-44-7
Molecular Formula: C3H6ClNO
Molecular Weight: 107.54 g/mol
Color / Form: Clear, colorless liquid.
Boiling Point: 329 to 333 F
Melting Point: -27 °F (NTP, 1992)
Flash Point: 155 F
Specific Gravity: 1.168 (sinks in water)
Vapor Pressure: 1.95 [mmHg]
Vapor Density: 3.73 (heavier than air)
Water Solubility: Decomposes

Regulatory Data

CERCLA RQ (40 CFR 302.4)
1 lb
OSHA PEL
none
NIOSH REL
Ca
IDLH
Ca [N
RCRA Waste Code(s)
[object Object]

A release of this material at or above its CERCLA reportable quantity (1 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: B2, 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 2262 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.