Styphnic acid
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| Names | |||
|---|---|---|---|
| Preferred IUPAC name 2,4,6-Trinitrobenzene-1,3-diol | |||
| Identifiers | |||
| 3D model (JSmol) | |||
| ChemSpider | |||
| ECHA InfoCard | 100.001.306 | ||
| PubChem CID | |||
| UNII | |||
| UN number | 0219 – Dry or wetted with < 20% water/alcohol 0394 – Wetted with >= 20% water/alcohol | ||
| CompTox Dashboard (EPA) | |||
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| Properties | |||
| C6H3N3O8 | |||
| Molar mass | 245.11 g/mol | ||
| Density | 1.829 g/cm3 | ||
| Melting point | 180 °C (356 °F; 453 K) | ||
| Boiling point | decomposes | ||
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references | |||
Styphnic acid (from Greek stryphnos "astringent"), 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.