Which of the following disinfectants contains alcohol?
a. Iodophor
b. Quat
c. Formalin
d. Tincture of bromine

Guida verificata passo dopo passo

Step 1: Understand the nature of each disinfectant listed. Iodophors are complexes of iodine with a solubilizing agent, typically used for their iodine content, not alcohol.

Step 2: Quats, or quaternary ammonium compounds, are cationic detergents used as disinfectants and do not contain alcohol as a component.

Step 3: Formalin is an aqueous solution of formaldehyde gas, used as a disinfectant and preservative, and it does not contain alcohol.

Step 4: Tincture of bromine is a solution of bromine in alcohol (usually ethanol), meaning it contains alcohol as the solvent.

Step 5: Based on the above, identify that the disinfectant containing alcohol is the tincture of bromine.

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Disinfectants and Their Chemical Composition

Disinfectants are chemical agents used to eliminate or reduce harmful microorganisms on surfaces. Each disinfectant has a specific chemical makeup that determines its effectiveness and usage. Understanding the active ingredients helps identify which disinfectants contain alcohol or other solvents.

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Types of Disinfectants

Alcohol-Based Disinfectants

Alcohol-based disinfectants typically contain ethanol or isopropanol, which denature proteins and dissolve lipids, effectively killing many bacteria and viruses. These disinfectants are fast-acting and commonly used in healthcare settings for skin antisepsis and surface cleaning.

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Alcohols

Tinctures as Alcohol Solutions

A tincture is a solution where a chemical substance is dissolved in alcohol, usually ethanol. Tincture of bromine, for example, contains bromine dissolved in alcohol, making it an alcohol-containing disinfectant. This distinguishes it from other disinfectants like iodophors or quats that do not contain alcohol.

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Alcohols

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Domanda del libro di testo

Which class of surfactant is most soluble in water?

a. Quaternary ammonium compounds

b. Alcohols