Method in laboratory for nitrocellulose?

Concentrated nitric acid (68%): concentrated sulfuric acid (98%) =1:3 mixed acid must becooling to room temperature, use absorbent cotton, cotton should be added slowly, don’t add too much, just can be mixed acid completely soaked.

Cotton fiber in -OH was ONO2 replaced, strictly speaking should be called

The esterification reaction

The resulting product is,

Three of cellulose nitrate

There are a lot of red brown gas generation is not possible. It should be in cotton fiber -OH was ONO2 replaced so as to balance the reaction successfully. Attention should be paid to mixed acid must be cooling to room temperature, use absorbent cotton, cotton should be added slowly, don’t add too much, just can be mixed acid completely soaked.