Which substance is known as Ethanol chloride?

Ethanol chloride refers specifically to Endofrost, which is a substance used in dentistry, particularly in pulp vitality testing. Endofrost is a cryogenic refrigerant that is utilized to test the vitality of the dental pulp by inducing a cold sensation on the tooth surface, helping to determine if the pulp is healthy or compromised. The formulation of Endofrost includes ethanol, which contributes to its efficacy as a cold stimulus in vital pulp testing.

The other substances listed do not have this specific application in dental practice. Isopropyl alcohol is commonly used as a disinfectant or solvent but is not associated with this particular function. Sodium hypochlorite is an effective antimicrobial agent used mainly in root canal treatment for its ability to dissolve organic tissue and disinfect, but it is not referred to as ethanol chloride. Acetic acid has its uses in various medical and dental contexts but does not relate to the classification or function of Endofrost as ethanol chloride. Hence, Endofrost as ethanol chloride is the correct association within the context of dental practices.