As a Noun: 1. A CHEMICAL HAZARD is a substances, mixture or particles that could be dangerous to health and safety if they are not used or disposed of correctly. Note: 1. The signer in the video is giving an Auslan explanation of the English term CHEMICAL HAZARD. There appears to be no commonly used Auslan sign for CHEMICAL HAZARD (but some signers represent this visually using depicting signs, once they have established the topic). If you know a sign for CHEMICAL HAZARD used by you or other Auslan users (deaf people or interpreters) please go to "Report missing sign" and supply details. Thank you.