Print Friendly Page
United Nations/North American Number Datasheet

UN/NA 1831

8 - Corrosive 6.1 - Poison Inhalation Hazard

Emergency Response Guidebook (ERG, 2016)

The Emergency Response Guidebook (ERG) provides general response recommendations for first responders.

UN/NA datasheets display several items from the ERG: material names, response guide PDFs, initial isolation and protective action distances, warnings about toxic-by-inhalation gases that may be produced if the material spills in water, and polymerization hazards.

Material Names

  • Sulfuric acid, fuming
  • Sulfuric acid, fuming, with less than 30% free Sulfur trioxide
  • Sulfuric acid, fuming, with not less than 30% free Sulfur trioxide
  • Sulphuric acid, fuming
  • Sulphuric acid, fuming, with less than 30% free Sulphur trioxide
  • Sulphuric acid, fuming, with not less than 30% free Sulphur trioxide
ERG book cover

Response Guide 137

link to a PDF file Substances - Water-Reactive - Corrosive

 

ERG Table 1: Initial Isolation and Protective Action Distances

Name of Material Small Spills
(from a small package or small leak)
Large Spills
(from a large package or many small packages)
First
Isolate
in all Directions
Then Protect Downwind First
Isolate
in all Directions
Then Protect Downwind
Day Night Day Night
Sulfuric acid, fuming 200 ft 0.2 mi 0.6 mi 1000 ft 1.8 mi 3.6 mi
Sulfuric acid, fuming, with not less than 30% free Sulfur trioxide 200 ft 0.2 mi 0.6 mi 1000 ft 1.8 mi 3.6 mi
Sulphuric acid, fuming 200 ft 0.2 mi 0.6 mi 1000 ft 1.8 mi 3.6 mi
Sulphuric acid, fuming, with not less than 30% free Sulphur trioxide 200 ft 0.2 mi 0.6 mi 1000 ft 1.8 mi 3.6 mi

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)

The Hazmat Table in 49 CFR 172.101 "lists and classifies those materials which the Department (of Transportation) has designated as hazardous materials for purposes of transportation".

UN/NA datasheets display several items from the Hazmat Table: proper shipping names, hazard classes and divisions (explosives may also include a compatibility group letter), label codes, and special notes relating to shipping location, shipping name, and whether the material is an inhalation hazard.

Descriptive text for each label code is shown below the table, along with representative vehicle placards.

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 Sulfuric acid, fuming with 30 percent or more free sulfur trioxide 8 8, 6.1 Inhalation Hazard Zone B
UN Sulfuric acid, fuming with less than 30 percent free sulfur trioxide 8 8

  8 - Corrosive

  6.1 - Poison Inhalation Hazard