I am presently investigating a fire in which cellulose insulation is the alleged first fuel ignited. Where can I find data on the ignitability of cellulose insulation and its ignition temperature? A search of the web produced data about older insulation, but I am dealing with insulation that was installed recently.

If you have investigated fire(s) involving cellulose insulation, I would appreciate your response concerning the ignition sources involved in your fire(s).