Quantitative analysis method of nitrocellulose component in propellant

The invention discloses a quantitative analysis method of a nitrocellulose component in a propellant, which comprises the following steps: after treating a propellant sample, extracting with organic ether at 55-70 DEG C; soaking organic ether insoluble substance in water while keeping the water temperature at 40-60 DEG C; drying the organic ether insoluble substance subjected to organic ether extraction and water soaking, cooling and weighing; and determining the nitrogen element content in the organic ether insoluble substance by using a secondary-combustion nitrogen element analysis meter of which the sample size is 80-100mg, and comparing with the nitrogen content in the raw material nitrocellulose to obtain the content of the nitrocellulose component in the propellant. The method is direct, quick and accurate, and is applicable to quantification of the nitrocellulose component in mono-base and double-base propellants as well as modified double-base propellants and composite propellants.