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Which of the following materials is used for Grease Resistance Testing?

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+1 vote
in Food Packaging Technology by (63.0k points)
Which of the following materials is used for Grease Resistance Testing?

(a) Quinone

(b) Azo dye

(c) Sudan Dye

(d) Malachite green

This question was posed to me by my college professor while I was bunking the class.

My question is based upon Optical, Mechanical Properties of Thermoplastic Polymers in section Thermoplastic Polymers Properties & Processing of Food Packaging Technology

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+2 votes
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Best answer
Correct option is (c) Sudan Dye

Best explanation: For plastics, Grease resistance can be performed directly in pouches using groundnut oil colored with Sudan dye. Grease resistance is conducted to measure the resistance of a plastic towards grease, by exposing it to grease containing dye and measuring the time it takes to show at the unexposed side.

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