| Identification | |
| Name: | Fluorosulfuric acid |
| Synonyms: | Fluosulfonicacid (6CI);Fluorosulfonic acid;Fluorosulfuric acid (HSO3F);Fluosulfuricacid;Monofluorosulfuric acid; |
| CAS: | 7789-21-1 |
| EINECS: | 232-149-4 |
| Molecular Formula: | FHO3S |
| Molecular Weight: | 100.0645 |
| InChI: | InChI=1/FHO3S/c1-5(2,3)4/h(H,2,3,4) |
| Molecular Structure: |  |
| Properties | |
| Transport: | UN 1777 8/PG 1 |
| Melting Point: | -87.3 C |
| Flash Point: | °C |
| Density: | 1.905g/cm3 |
| Stability: | Stable. May corrode glass. Incompatible with many metals, bases. |
| Refractive index: | 1.392 |
| Water Solubility: | Stability Stable. May corrode glass. Incompatible with many metals, bases. Toxicology Corrosive - causes serious burns. Harmful if swallowed orinhaled, and in contact with the skin. |
| Solubility: |
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| Appearance: | colourless liquid |
| Specification: |
It is very strongly acidic [Merck]. Reacts exothermically with chemical bases (examples: amines, amides, and inorganic hydroxides). These reactions can generate dangerously large amounts of heat in small spaces. Reacts violently with water to generate hydrofluoric acid and sulfuric acid. Reacts with active metals, including such structural metals as aluminum and iron, to release hydrogen, a flammable gas. Can initiate the polymerization of certain alkenes. Reacts with cyanide compounds to release gaseous hydrogen cyanide. Generates flammable and/or toxic gases in contact with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and strong reducing agents. Additional gas-generating reactions occur with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), and carbonates. May catalyze (increase the rate of) chemical reactions. |
| Report: |
Reported in EPA TSCA Inventory. |
| Packinggroup: | I |
| Flash Point: | °C |
| Storage Temperature: | 2-8°C |
| Color: | COLORLESS LIQUID; REDDISH-BROWN COLOR WITH ACETONE |
| Safety Data | |
| Hazard Symbols | |
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