Flame resisting-ization, noncombustion and prevention flame-ization of a kraftpaper rope

gan made a soufa aqueous solution infringe a kraftpaper rope for about 10 seconds, and after leaving, I squeezed and made them dry naturally solidly.
Ignition is being tried in an alcohol lamp.
I don’t ignite basically and high incombustibility is indicated.

soufa can give incombustibility to cellulosic material easily.
The excellent effect is shown as a flame retarder of the material by which it’s for paper.