UN/NA Number Reference
DOT Class 4.1 Flammable Solid placard

UN 1349: Sodium picramate, wetted

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 1349 is assigned the proper shipping name Sodium picramate, wetted in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 4.1 Flammable Solid material, Packing Group I. Required label(s): 4.1.

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 113)

Hazards: Picric acid, picrates, and similar wetted explosives. KEEP WET - dry material may detonate from friction, heat, or shock. Heating reduces water content and increases explosion risk.

Fire: Flood with water from maximum distance. Cool containers with water. DO NOT allow material to dry out. Evacuate if fire reaches cargo.

Spill: Do not touch. Keep material wet at all times. Cover with wet sand, wet earth, or water-saturated material. Eliminate friction sources. No metal-on-metal contact.

Chemical and Physical Properties

Sodium picramate appears as a yellow solid. Toxic by inhalation and skin absorption. Primary hazard is fire with either a minor blast or projection hazard or both, but no mass explosion hazard. May explode under prolonged exposure to heat.

CAS Number: 831-52-7
Molecular Formula: C6H4N3NaO5
Molecular Weight: 221.10 g/mol

Special Provisions

49 CFR 172.102 special provision codes for this entry: 23, A8, A19, N41, 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 1349 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.