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These placards identify materials that can emit flammable or toxic gases if they come into contact with water. They provide a critical warning to firefighters not to use water to extinguish a fire involving these substances. This information is life-saving, as it prevents a dangerous reaction from becoming much worse. Browse our complete range of Class 4 dangerous when wet placards to find the right DOT-compliant option for your water-reactive cargo transport needs.
Blue is the designated DOT color for materials that are dangerous when wet. It provides a distinct visual contrast to other hazard classes, ensuring the unique risk is understood immediately. This color-coding is essential for preventing the accidental use of water during a fire, which could lead to an explosion. Our DOT Class 4 dangerous when wet placard follows all federal color and design standards for immediate hazard class recognition by emergency responders.
Like all DOT hazard placards, they must be clearly visible on all four sides of the vehicle. This 360-degree visibility is a legal requirement that ensures the hazard is identifiable from any angle. Proper placement is vital for protecting emergency crews and for meeting all federal safety and transport regulations. For full DOT placard mounting requirements, refer to FMCSA hazardous materials transport regulations. Our dangerous when wet placard is sized to meet all federal visibility requirements for all four vehicle mounting positions.
Absolutely! Our placards are made from high-performance, weather-resistant aluminum or vinyl designed to stay intact even when wet. The UV-protective coating prevents fading from the sun, ensuring your critical hazard warning remains bright and legible for years. This durability is essential for maintaining safety in all types of outdoor environments. Our no water reactive materials OSHA danger sign is a great companion product for marking storage and handling areas where water-reactive substances are managed on-site.
Yes, reflective placards are highly recommended for any transport vehicle that operates at night or in rainy weather. They catch the light from flashlights or headlights, ensuring the hazard is seen when visibility is low. This increased visibility is a major advantage in preventing accidents and protecting everyone on the road. Explore our full range of hazmat placards to find reflective finish options across all DOT hazard classes including dangerous when wet materials.
Class 4 Dangerous When Wet placards are required by law to be attached to hazardous materials shipment containers. Transporting Class 4 Dangerous When Wet hazardous materials by highway, railroad car, or cargo ship all necessitate proper identification on the containers and FlipPlacards.com provides a seamless solution for your placards needs. P.O.P. 49CFR part 172.500 regulations dictate that Class 4 Dangerous When Wet placards have a blue background, and bare a Class 4 numeral code in white text. Domestic and international shipments must be identified, and our placards are available in heavy duty polycoatedtagboard, which is water resistant. In addition, our self-adhesive vinyl placards mount easily on the surface, and peel off cleanly without having to remove any extra mess.
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