United Nations/North American Number Datasheet

UN/NA 1826

8 - Corrosive 5.1 - Oxidizer

Emergency Response Guidebook (ERG, 2020)

A caution icon. The ERG recommendations are developed for use during the initial phase of transportation incidents; they are not intended for spills at facilities.

Material Names

  • Nitrating acid mixture, spent, with more than 50% nitric acid
  • Nitrating acid mixture, spent, with not more than 50% nitric acid
ERG book cover

Response Guide 157

Substances - Toxic and/or Corrosive (Non-Combustible / Water-Sensitive) Sustancias - Tóxicas y/o Corrosivas (No Combustibles / Susceptibles al Agua) Substances - Toxiques et/ou Corrosives (Non-Combustibles / Sensibles à l'Eau)


There are no initial isolation and protective action distances listed in the ERG.

The ERG doesn't predict that large amounts of toxic-by-inhalation gases will be produced if this material is spilled in water.

Hazmat Table (49 CFR 172.101)

UN/NA Proper Shipping Name Hazard Class Labels Notes*

* There are three notes: (1) whether the displayed information is for domestic (U.S.) or international shipping (if neither is specifically indicated, it applies to both), (2) whether the proper shipping name must include one or more technical names of the hazardous material in parentheses, and (3) whether the hazardous material is an inhalation hazard.
UN Nitrating acid mixtures spent with not more than 50 percent nitric acid 8 8
UN Nitrating acid mixtures, spent with more than 50 percent nitric acid 8 8, 5.1

  8 - Corrosive

  5.1 - Oxidizer