National Marker Company sign with the legend ?DANGER - CHLORINE GAS? informs the workers about the chlorine gas handling area and the danger it poses. It is often used in laboratories and industrial facilities to enforce safety measures. The danger sign displays the message in White text on a Red base with Black text on a White base to easily grab an onlooker?s attention. The clear, bold font makes the message easily readable even from a distance. The danger signage complies with OSHA 29 CFR-1910.145 standard and has an NMC Sign Muscle coating that protects the text against fading, scratches, scuffing, mold, and moisture.