Alcohol resistant foam is designed to resist dissolution in which solvents?

Alcohol resistant foam is designed to resist dissolution in which solvents?

• A. Non-polar solvents
• B. Water
• C. Polar solvents
• D. Organic solvents

Answer: (C)

Alcohol resistant foam is formulated to resist dissolution by polar solvents. Polar solvents, such as alcohols (methanol, ethanol, isopropanol), can break down standard hydrocarbon foams, causing them to lose effectiveness. The additives in alcohol-resistant foam create a stronger, more persistent film that stays intact when in contact with these polar liquids, allowing the foam to blanket and control spills of alcohol-based fuels. Non-polar solvents and water don’t challenge the foam in the same way, and while some organic solvents are non-polar, the key factor here is solvent polarity, which is why polar solvents is the best answer.

Alcohol resistant foam is formulated to resist dissolution by polar solvents. Polar solvents, such as alcohols (methanol, ethanol, isopropanol), can break down standard hydrocarbon foams, causing them to lose effectiveness. The additives in alcohol-resistant foam create a stronger, more persistent film that stays intact when in contact with these polar liquids, allowing the foam to blanket and control spills of alcohol-based fuels. Non-polar solvents and water don’t challenge the foam in the same way, and while some organic solvents are non-polar, the key factor here is solvent polarity, which is why polar solvents is the best answer.