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Which of the following non-metallic has the highest corrosive resistance to the phosphoric acid with temperature?

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in Corrosion Engineering by (98.5k points)
Which of the following non-metallic has the highest corrosive resistance to the phosphoric acid with temperature?

(a) Teflon

(b) Graphite

(c) Polyvinyl chloride

(d) Polyethylene

The question was asked by my college professor while I was bunking the class.

This interesting question is from Mineral Acids topic in portion Mineral Acids of Corrosion Engineering

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Right answer is (a) Teflon

Easy explanation: Teflon is a non-metallic material that has the highest corrosion resistance to phosphoric acid up to 550°C. Teflon is also known as polytetrafluoroethylene (CF2=CF2).

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