Which one of the following chemicals should be used to clean away a blood spillage in the dental workplace?

Sodium hypochlorite is the preferred chemical for cleaning away blood spills in the dental workplace due to its effectiveness as a disinfectant. This substance is known for its ability to kill a wide range of pathogens, including bacteria, viruses, and fungi, making it an ideal choice for managing biohazardous spills. When diluted appropriately, sodium hypochlorite can effectively disinfect surfaces that may be contaminated with blood, minimizing the risk of infection and cross-contamination in the clinical environment.

Its use aligns with infection control protocols that emphasize the importance of timely and thorough cleaning of blood spills to ensure a safe and sterile environment for both patients and dental staff. Other options, while useful in different contexts, do not provide the same level of efficacy in dealing specifically with blood contamination as sodium hypochlorite does.