Question

Collodion is a 4% solution of which one of the following alcohol-ether mixtures?
A.Nitroglycerine
B.Cellulose Acetate
C.Glycol Dinitrate
D.Nitrocellulose

Answer 1

Hint:We have to know that collodion is a flammable and syrupy solution. Collodion is of two basic types namely flexible and non-flexible. We can use the flexible type as surgical dressing or to hold dressings in place. Usually, Non-flexible collodion is used in theatrical make-up.

Complete step by step answer:
As we know that the nitroglycerin or 1,2,3-trinitroxypropane, is a dense, colourless, oily, explosive liquid commonly produced by nitrating glycerol with white fuming nitric acid under conditions required for the formation of the nitric acid ester.
Therefore, the option (A) is incorrect.
Cellulose acetate is the acetate ester of cellulose. We can synthesize cellulose acetate by the reaction of cellulose with acetic anhydride.
Therefore, the option (B) is incorrect.
Glycol dinitrate (or) nitroglycol is a chemical compound that is colorless, oily explosive liquid obtained by nitrating glycols. Some of the glycol dinitrates are ethylene glycol dinitrate, propylene glycol dinitrate etc.
Therefore, the option (C) is incorrect.
We have to know Collodion is a flammable, syrupy solution of nitrocellulose in ether and alcohol. Scientists found out that cellulose nitrate could be dissolved in ether. They prepared a mixture of ether (ethoxyethane) as the solvent and ethanol as a diluent which condensed cellulose nitrate into a clear gelatinous liquid. Collodion was used medically as a dressing in 1847.
Collodion is a 4% solution of nitrocellulose in alcohol-ether mixture.

Therefore, the option (D) is correct.


Note:
We can use cellulose acetate as a synthetic fiber in the production of cigarette filters and playing cards. We can also use cellulose acetate as a film base in photography, and as a component in some coatings.
We can use Collodion to glue electrodes to the head for electro-encephalography. Certain types of nail polish have collodion in them. We can use Collodion in the cleaning of optics like telescope mirrors.
We can use nitrocellulose to coat playing cards and to hold staples together in office staplers. We can use Nitrocellulose lacquer as a finish on guitars and saxophones.
We can use triethylene glycol dinitrate and diethylene glycol dinitrate as replacements for nitroglycerin in propellants.