Styphnic acid
（重定向自Trinitroresorcinol）
![](/Images/godic/202502/17/Styphnic_acid5908.png")
![](/Images/godic/202502/17/Styphnic_acid_Ball_and_Stick5908.png")
![](/Images/godic/202502/17/Styphnic_acid_Space_Fill5908.png")
![](/Images/godic/202502/17/Styphnic_acid_structure01.svg5908.png")
Styphnic acid, or 2,4,6-trinitro-1,3-benzenediol, is a yellow astringent acid that forms hexagonal crystals. It is used in the manufacture of dyes, pigments, inks, medicines, and explosives such as lead styphnate. It is itself a low sensitivity explosive, similar to picric acid, but explodes upon rapid heating.