So quicklime exists with stats, and was apparently written up by SKR himself in an official Paizo AP, making it a most offcial poison:
http://www.archivesofnethys.com/PoisonDisplay.aspx?ItemName=Quicklime
Quicklime:
SKR wrote:
Quicklime
Source Pathfinder #95: Anvil of Fire pg. 29 (Amazon)
Price N/A; Weight —
Type contact or inhaled; Save Fortitude DC 18
Frequency 1/round for 6 rounds
Effect 1d2 Con damage, blindness and nausea for 1d10 minutes
Cure 2 consecutive saves
The cost is n/a, maybe meaning you have to go make it yourself by gathering materials. But that is not hard because it is made by picking up rocks or seashells off the ground and cooking them. Is one of the most commonly used substances in the world.
For reference here is a video of how to make quicklime with a real life alchemy set:
https://www.youtube.com/watch?v=Uy6rEDuGXi8
I have searched but never found any discussion of this or something similar. So it appears it would work like so: you have a few ranks of Craft (Alchemy) and Int mod for a +10. You take 10 for a result of 20 vs quicklime DC of 18. To avoid divide by zero use cost as 1 sp instead of 0.
Weekly check is 20*18=360, 360/1=360, is greater than cost of 1 so you finished 360 doses. By day 360/7=51.4..., 51/8 hours of crafting per day=6.375 per hour, 6 per hour implies 10 minutes to make one dose of quicklime, which is accidentally realistic?
Now it is contact/inhaled, and the rules say that somehow you can use inhaled poison as a 10 foot cube, but no one has ever written the actual rule for doing so down? Well instead you can use Poison Shot to spray it in people's faces, so you can effectively use this as a per fight move limited by grit.
http://www.d20pfsrd.com/feats/general-feats/poison-shot-deed-grit
If you look at wikipedia for quicklime you can note that spraying it in people's faces was occasionally a historical tactic, making this possibly the most realistic use of poison in an RPG.
Are there other rules that would change how this works somewhere?
Other questions on gunslinger alchemist:
Do poisons count as alchemical weapons that can be used by the grenadier archetype to stick to weapons?
If a toxicant grenadier alchemist with a pistol uses all his powers together it should work as: swift action to pick up cartridge and imbue it with toxin, move action to take alchemical item out and stick it on cartridge, standard action to stuff cartridge and bomb into pistol and fire it at an enemy, yes?
If he hits and it is a critical, is the damage (1d8 pistol)*4 + (1d6+int bomb)*4 + (extra bomb d6s from levels) + (any alchemical item damage+int)*4? Then followed by a save vs bomb, save vs alchemical item, save vs toxicant toxin.
I'm going to write here just in case someone decides to copy this concept:
ALWAYS DO YOUR RESEARCH on stuff that are just randomly mentioned and are missing important information such as price because there's almost certainly a good reason for it.
In this case the quicklime "poison" is actually a giant's cauldron of quicklime that is poured on a person from ramparts above. This is an environmental hazard with a poison effect not some sort of poison that you could rub a bit of paste to a weapon and expect the same effect.
