UN/NA Number Reference
DOT Class 5.1 Oxidizer placard

UN 1462: Chlorites, inorganic, n.o.s.

49 CFR 172.101 Hazardous Materials Table·ERG 2024

DOT Classification and Shipping

UN 1462 is assigned the proper shipping name Chlorites, inorganic, n.o.s. in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 5.1 Oxidizer material, Packing Group II. Required label(s): 5.1.

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 143)

Hazards: May explode from heat or contamination. Strong oxidizer. May ignite combustibles.

Fire: Flood with water from distance. Cool containers. Evacuate area if fire reaches cargo.

Spill: Keep combustibles away. Do not touch. Use water spray.

Chemical and Physical Properties

Sodium chlorite appears as a white crystalline solid. Difficult to burn, but accelerates the burning of organic substances. Forms explosive mixtures with certain combustible materials. May explode under prolonged exposure to heat or fire. Used in water purification, to bleach wood pulp, textile, fats, oils; and for many other uses.

CAS Number: 7758-19-2
Molecular Formula: ClNaO2
Molecular Weight: 90.44 g/mol
Color / Form: White crystals or crystalline powder
Boiling Point: Decomposes
Melting Point: Decomposes as it melts between 180-200 °C
Specific Gravity: 2.47 (solid)
Water Solubility: Soluble

Special Provisions

49 CFR 172.102 special provision codes for this entry: 352, A7, IB6, IP2, N34, T3, TP33. 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 1462 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.