How long should skin be flushed with water during dry chemical exposure?

• A. 2 minutes
• B. 60 seconds
• C. At least 20 minutes
• D. 5 minutes

Answer: (C)

The main idea is that dry chemical skin exposures require a long, thorough rinse with water to remove residues and reduce ongoing injury risk. Dry chemicals can cling to skin or continue reacting and causing irritation after initial contact, so washing away the material as completely as possible is essential. Irrigating with cool running water for about 20 minutes gives enough time to dilute and flush away the chemical, minimizing burns and tissue damage. Shorter rinses—like a minute or two, or even five minutes—often leave behind chemical residues that can keep irritating the skin, which is why those shorter durations aren’t sufficient. After starting the rinse, remove contaminated clothing and continue washing until the chemical is gone and medical assessment is obtained if symptoms persist.