Butyric acid, along with acetic acid, can be reacted with cellulose to produce the organic ester cellulose acetate butyrate (CAB), which is used in a wide variety of tools, parts, and coatings and is more resistant to degradation than cellulose acetate.
One and a half hours is much too long to cook the chicken at 350 degrees F. The time your chicken will bake in the oven does depend on the internal temperature and the size of your chicken or chicken pieces. Generally I bake chicken at 350 degrees F. for 30 to 40 minutes.
It is a momentous day in meat cookery: the US Department of Agriculture has lowered the recommended minimum cooking temperature of pork by 15 degrees Fahrenheit (9.5C). That may not seem worth a crackling to you, but to pork chefs it is a victory of the light over ancient forces of prejudice and ignorance.