|Preferred IUPAC name
Picrylsulfonic acid; Trinitrobenzene sulfonate; TNBS
3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||293.16 g·mol−1|
|R-phrases (outdated)||R11 R36/38|
|S-phrases (outdated)||S16 S26 S33 S37/39|
|NFPA 704 (fire diamond)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Trinitrobenzenesulfonic acid (C6H3N3O9S) is a nitroaryl oxidizing acid. Due to its extreme oxidative properties, if mixed with reducing agents including hydrides, sulfides, and nitrides, it may begin a vigorous reaction that culminates in almost immediate detonation. The aromatic nitro compounds may explode in the presence of a base such as sodium hydroxide or potassium hydroxide even in the presence of water or organic solvents because of the explosive tendencies of aromatic nitro compounds which increase in the presence of multiple nitro groups. Not much is known about this compound, but it is used as a peptide terminal amino group neutralizer and is currently being investigated for its effects on the immune system.
Its primary usage is primarily to neutralize peptide terminal amino groups in scientific research. Occasionally it is used as a detonator for certain other explosive compounds.
Health concerns and safety precautions
The primary hazard of working with 2,4,6-trinitrobenzenesulfonic acid is the risk of instantaneous explosion. 2,4,6-Trinitrobenzenesulfonic acid is an extremely sensitive compound especially when mixed with other compounds, exposed to heat, or exposed to rapid temperature or pressure changes. The toxicological properties of this compound have not been investigated, so all health effects are unknown. To best prevent bodily harm or injury it is recommended that all direct contact be avoided and the compound be kept under extremely strict environmentally controlled conditions. In case of spillage it is recommended that a local fire department be called in advance prior to any attempt at cleaning. In case of fire it is recommended that the material be left to burn and the surrounding area be evacuated. If fire fighting is required it is recommended that a fully positive pressure self-contained breathing apparatus be used along with either foam or CO2 extinguishers.
- Atsushi Kitani; Ivan J. Fuss; Kazuhiko Nakamura; Owen M. Schwartz; Takashi Usui; Warren Strober (2000). "Treatment of Experimental (Trinitrobenzene Sulfonic Acid) Colitis by Intranasal Administration of Transforming Growth Factor (Tgf)-β1 Plasmid: TGF-β1–Mediated Suppression of T Helper Cell Type 1 Response Occurs by Interleukin (Il)-10 Induction and IL-12 Receptor β2 Chain Downregulation". The Journal of Experimental Medicine. 192 (1): 41–52. doi:10.1084/jem.192.1.41. PMC 1887715. PMID 10880525.
- Trinitrobenzenesulfonic Acid, Comparative Toxicogenomics Database.
- MSDS, chemcas.com.
- savety, cameochemicals.