Add NPLM - napalm. Long-burning liquid. Burns like liquid version of coal. Fire has 950C. Can be ignited by FIRE, PLSM, etc. Napalm can be created by mixing DESL and incendiary jelly (INGL). 

INGL - Incendary jelly (or incendary gel). Dangerous flammable liquid. It's basicly GEL that can be ignited. This dense liquid can be ignited by using FIRE, PLSM, THDR, LIGH, etc. Flames have 720C. Can be manufactured by mixing PHOS with OIL or by mixing GEL with NITR. Incendiary jelly burns longer than other flammable liquids and cause more destruction. INGL burns for 5 frames. Its life value is 5 and after ignition it goes down releasing fire every frame. INGL creates NPLM when mixed with DESL.

IGRD - Incendary grenade - Explosive device that can be used as ammo for mortars to set things on fire. It explodes like BOMB but instead of releasing EMBR, it releases FIRE and BCOL. Explodes when preassure around is higher than 15 or when temp. is higher than 350C. Can be activated by SPRK or FIRE. Can be created by mixing PHOS with GREN (if it's doable). Explodes with little delay (if it's possible). After ignition its life goes down (default life is 25). When life reaches 0, IGRD will explode. You have to wait 25 frames for explosion.