19. What is the difference between high nitrogen grades and low nitrogen grades?

High nitrogen grades of industrial nitrocellulose, commonly known as E, H or RS grades have nitrogen contents of 11.7 – 12.3% and are soluble in esters, ketones and glycol ethers.

Low nitrogen grades commonly known as A, L or SS grades have nitrogen contents of 10.7 -11.4% and are soluble in ethanol in addition to esters, ketones and glycol ethers.