United Nations/North American Number Datasheet

UN/NA 1183

4.3 - Dangerous when wet 8 - Corrosive 3 - Flammable liquid

Emergency Response Guidebook (ERG, 2016)

Material Names

  • Ethyldichlorosilane
ERG book cover

Response Guide 139

Substances - Water-Reactive (Emitting Flammable and Toxic Gases) Sustancias - Reactivas con el Agua (Emiten Gases Inflamables y Tóxicos) Substances - Réagissant à l’Eau (Émettant des Gaz Inflammables et Toxiques)


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)
in all Directions
Then Protect Downwind First
in all Directions
Then Protect Downwind
Day Night Day Night
Ethyldichlorosilane (when spilled in water) 100 ft 0.1 mi 0.2 mi 200 ft 0.4 mi 1.2 mi

ERG Table 2: Water-Reactive Materials which Produce Toxic-By-Inhalation Gases

When spilled in water, large amounts of Hydrogen chloride (HCl) may be produced.

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 Ethyldichlorosilane 4.3 4.3, 8, 3

  4.3 - Dangerous when wet

  8 - Corrosive

  3 - Flammable liquid