Carboxycelluloses nitrates

Celluronic acid produced by treating cellulose with nitrogen tetroxide may then be esterified by means of nitric acid. It has been found that even in. the presence of small number of carboxylic groups a considerable change in the properties of the nitric esters is brought about, as compared with cellulose. 

To characterize the properties of the product of esterification by means of nitric acid, Rogovin, Treyvas and Shorygina [4] have determined the values collected in Table 101. 

The result of nitrating celluronic acid (after Rogovin, Treyvas, Shorygina [4]) 

Content of COOH groups in the original substance % Nitrogen content of product % Solubility in acetone % 

It is clear from the figures that owing to the presence of 2-3% COOH, i.e. one carboxylic group for 8-10 anhydroglucose rings, the product is made very poorly soluble even in such a good solvent of nitrocellulose as acetone. 

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Celluronic acid nitrates (carboxycelluloses nitrates). Celluronic acid obtained by treating cellulose with nitrogen dioxide may then be esterified by means of nitric acid. 

Nitration with mixtures of nitric and phosphoric acids Nitration with mixtures of nitric and acetic acid (or acetic anhydride) Nitration in mixtures and solutions including inactive substances Nitration with nitric acid in the presence of inorganic salts Nitration with nitrogen oxides Celluronic acid nitrates (carboxycelluloses nitrates)... 

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