What does hazchem code 3YE mean?

Hazchem code 3YE indicates a specific type of hazardous material that is flammable and corrosive. The "3" refers to the flammable nature of the substance, while "Y" indicates that it should not be mixed with water and "E" denotes that emergency services should be informed of the hazard. This code is used to guide emergency responders in handling the material safely during incidents.