A special label has been designed for this purpose. Some laboratories may synthesize or develop new chemical substances on occasion. This can often be done by comparing the structure of the new substance with the structure of similar materials with known hazardous properties. If the chemical produced is of unknown composition, it must be assumed to be hazardous and appropriate precautions taken. An emergency response flipchart will be posted in laboratories and work areas where chemicals are used.
Line managers are responsible for ensuring that work areas and entrances are appropriately posted.