Chemical Resistance of Plastics

A manufacturer plans to construct plastic reagent bottles, some of which will be used for 20% solutions of hydrochloric acid and sodium hydroxide.
Among the following materials, which would be least suitable for this purpose. Enter one letter, corresponding to your selection. .

A
High Density Polyethylene
 B
Polypropylene (isotactic)
 C
Nylon 66
 D
Polystyrene
 E
Poly(ethylene oxide)

Enter your selection here:  
   

Sensitivity to Ozone

Which of the following polymers is most likely to suffer chemical degradation on exposure to atmospheric ozone?
Enter one letter, corresponding to your selection.

A   Polyproplyene
B   Natural Rubber
C   Poly(vinyl chloride)
D   Teflon
E   Polyacrylonitrile

 Enter your selection here:  
     
This script written by William Reusch, Dept. of Chemistry, Michigan State University. Please send comments and corrections to whreusch@pilot.msu.edu.