Class 4.2 Spontaneous Combustion:
Full UN Number Database

Browse our complete A-Z directory of Class 4.2 Spontaneously Combustible substances. This index contains every UN Number in our database for materials liable to spontaneous combustion. Select a specific substance below to access detailed transport regulations, packing instructions, and safety guidelines for road (ADR), sea (IMDG), and air (IATA) transit.