What is the recommended action if dry chemical powders contact skin?

• A. Rinse with water for 5 minutes only
• B. Brush off dry chemical, remove contaminated clothing, and flush the skin with water for at least 20 minutes; avoid secondary transfer
• C. Apply a neutralizing agent to the skin
• D. Wipe away powder with a dry cloth and return to work

Answer: (B)

When dry chemical powders contact skin, the priority is to remove the chemical and stop ongoing exposure. The best action is to brush off the dry powder, remove contaminated clothing, and flush the skin with clean running water for at least 20 minutes, taking care to avoid rubbing or spreading the powder to other areas. Brushing helps lift and remove the abrasive residues without grinding them into the skin, while removing clothing cuts down on further contact. Thorough flushing with water dilutes and washes away residues that may cause chemical burns or irritation, and the 20-minute duration increases the likelihood that all traces are removed, even from under fingernails and folds of skin. Avoid secondary transfer by handling contaminated items carefully and continuing to rinse.

Rinsing for only a short time would leave residues behind, applying a neutralizing agent can trigger heat or dangerous reactions with some chemicals, wiping with a dry cloth can grind the powder into the skin and spread it, and returning to work while still contaminated risks further injury.