Pyroxylin

Shake 1 ml. of anhydrous methyl alcohol with 1 ml. of paraffin oil. Repeat the experiment with 1 ml. of n butyl alcohol. From your results state which is the better solvent for paraffin oil (a mixture of higher hydrocarbons) and thus explain why n-butanol and higher alcohols are incorporated in pyroxylin lacquers in preference to methyl and ethyl alcohols. 

Cellulose nitrate (pyroxylin) [9004-70-0], made from cellulose and a mixture of nitric and sulfuric acids, is called gun cotton and is used in explosives. Nitrates of lower DS find some appHcation in coatings and adhesives. 

Pyrex glass Pyrites (copper) Pyrites (iron) Pyroxylin plastics Quartz... 

N. See Collodion Cotton or Pyroxylin and Pyrocellulose, Pyro or Pyrocotton in Vol 2. 

Pyroxylins. A group of Nitrocelluloses with N content ranging from 10% and less to about 12.65%. The lower N members (see also under Collodion Cotton in Vol 3, C394-R) are used... 

Uses Determining fat content in milk solvent for alkaloids, fats, oils manufacturing isovaleric acid, isoamyl or amyl compounds, esters, mercury fulminate, artificial silk, smokeless powders, lacquers, pyroxylin photographic chemicals pharmaceutical products microscopy in organic synthesis. 

Bronco Supported vinyl or pyroxyline General Tire Rubber... 

Texileather Pyroxylin-leather cloth General tire Rubber... 

The development of plastics accompanied synthetic fibers. The first synthetic plastic with the trade name Celluloid was made in 1870 from a form of nitrocellulose called pyroxylin, the same substance used to produce the first rayon. Celluloid was developed in part to meet the demand for expensive billiard balls, which at the end of the nineteenth century were produced from ivory obtained from elephant tusks. John Wesley Hyatt (1837-1920) combined pyroxylin with ether and alcohol to produce a hard substance called collodion. Hyatt s collodion, like Bernigaut s original rayon, was unstable and potentially explosive. He solved this problem by adding camphor to the collodion to produce a stable hard plastic he called Celluloid. 

Collodions These are the fluid preparation intended for external use. The vehicle of collodion are volatile (e.g. ethyl alcohol) in nature and when applied on the skin (with brush or rod) evaporates to the skin and leaving a flexible, protective film. The film producing agent is pyroxylin (nitrocellulose) and for flexibility colour oil is added. 

Gladstone of England, by exercising special precautions, was able to determine nitrogen content of pyroxyline as 12.75%, which corresponds to pentanitrate, while the xyloidine corresponded more nearly to trinitrate (Ref 44, p 252)... 

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