Infrared Determination of Nitrogen in Raw Nitrocellulose and Nitrocellulose Contained in Propellants on a Macro and Semimicro Scale
FRANKFORD ARSENAL PHILADELPHIA PA
Pagination or Media Count:
The infrared procedure for the determination of nitrogen in raw nitrocellulose has been improved. In the original method 0.31 to 0.32 gram of sample was dissolved in 45 ml of tetrahydrofuran, the solution was weighed, and the infrared peak at 6.05 microns was measured. The calibration curve was prepared by plotting absorbance against mg of nitrogen per gram of solution. The method has the disadvantage that the height of the peak is uniquely affected by the sample weight. The infrared method for nitrogen in nitrocellulose was extended to the semimicro scale by using a 30.0-mg sample and diluting to 5 ml in a volumetric flask. The infrared procedure has also been applied on a macro and semimicro scale to the direct determination of nitrogen in nitrocellulose after a methylene chloride extraction. The amounts of graphite and inorganic salts found in nitrocellulose-base propellants do not interfere with the latter method.
- Organic Chemistry
- Solid Rocket Propellants