What colors are used on a sign for chemicals?

The appropriate colors used on a sign for chemicals are yellow and red. These colors are universally recognized within safety contexts to indicate caution and potential hazards associated with chemical substances. Yellow serves as a warning color, signaling that there may be risks that require attention and careful handling. Red highlights urgency and alerts individuals to immediate danger.

In terms of safety protocols, the combination of yellow and red effectively communicates that caution must be exercised around chemical storage and usage. This coding helps ensure that personnel are aware of the potential risks and can take the appropriate measures to protect themselves and others.

The other color combinations, such as green and blue or black and white, do not specifically signify chemical hazards in the same way. Green typically represents safety or go-ahead signals, while blue often indicates informational signage. Black and white may denote general information or restrictions, but lack the specific connotation of danger associated with chemical handling.