Question

Collodion is a 4% solution of which of the following in alcohol-ether mixture?
(A) Nitroglycerine
(B) Cellulose Acetate
(C) Glycol Dinitrate
(D) Nitrocellulose

Answer 1

Hint: Collodion is a flammable and syrup solution. There are two basic types of Collodion namely non-flexible and flexible. The flexible type of Collodion is used for surgical dressing or in other words we can say that it is used to hold the dressing in place and the non-flexible Collodion is used in theatrical makeup.

Complete step by step solution:
Collodion is a flammable, syrup solution of pyroxylin which is nitrocellulose or flash paper in the ether and alcohol. It is often used in surgical dressing.
Nitroglycerin is a dense, colourless, oily and explosive liquid which is produced by nitrating glycol with white fuming nitric acid under the conditions which are required for the formation of nitric acid ester. It means that nitroglycerin is not the correct answer.
Cellulose acetate is the acetate ester of cellulose. Synthesis of cellulose acetate is done by the reaction of cellulose with acetic anhydride. It means that cellulose acetate is not the correct answer.
Glycerol dinitrate is a colourless chemical compound and an oily explosive liquid which is synthesized by nitrating glycols. Some of the examples of glycol dinitrate are ethylene glycol dinitrate, propylene glycol dinitrate etc. It means that glycol dinitrate is not the correct answer.

Hence the correct option is option (D) i.e. Nitrocellulose.

Note: Nitrocellulose is used in the coating of playing cards and to hold up the staples together in the staplers. We use nitrocellulose lacquer as a finish on the guitars and saxophones. We can use trimethylene glycerol as a replacement for nitrocellulose in the propellants.