GHS Hazard Warning Labels. For the globally harmonized system (GHS) of classifying chemicals according to various hazards. These risks include explosives, flammables, oxidizers, compressed gases, corrosives, toxics, irritants and dangers to the environment and our health. These labels are printed red and black onto either white paper with permanent adhesive or gloss white polypropylene with permanent adhesive and gloss laminated for added durability. Available label sizes are 25mm x 25mm, 50mm x 50mm and 100mm x 100mm. Supplied on reels of 250 labels. To ensure these are suitable for your application please ask for FREE MATERIAL SAMPLES.