| [Autoignition] > 350 | |
| [Fire Fighting] Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water spray, dry chemical, carbon dioxide, or alcohol-resistant foam. | |
| [Ingestion] If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. | |
| [Inhalation] Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. | |
| [Skin] Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. | |
| [Eyes] Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. | |
| [Storage] Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. | |
| [Handling] Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. | |
| [Ingestion] May be harmful if swallowed. Causes digestive tract irritation. | |
| [Inhalation] Causes respiratory tract irritation. Causes irritation of mucous membrane. | |
| [Skin] Causes mild skin irritation. | |
| [Eyes] Causes severe eye irritation. | |
| [EC Risk Phrase] R 22 34 | |
| [EC Safety Phrase] S 26 36/37/39 45 | |
| [UN (DOT)] 3261 | |
| [Personal Protection] Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. | |
| [Respirators] A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use. | |
| [Appearance] White to beige powder. | |
| [Solubility in water] Decomposition | |
| [Melting Point] 155 - 165 | |
| [Usage] Used as an activating electrophile in a swern like oxidation. | |
| [Product Name] Pyridine sulfur trioxide | |
| [Synonyms] Pyridine, compound with sulfur trioxide (1:1) | |
| [CAS] "CASEN_26412-87-3.htm">26412-87-3 | |
| [Formula] C5H5NO3S | |
| [Molecular Weight] 159.16 | |
| [EINECS] 247-683-3 | |
| [Beilstein/Gmelin] 3704116 | |
| [Beilstein Reference] 5-20-05-00184 | |
| [EC Class] harmful, irritant | |
| [Small spills/leaks] Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. | |
| [Disposal Code] 12 | |
| [Incompatibilities] Metals, strong oxidizing agents, moisture, diphenylmercury. | |
| [Stability] Stable under normal temperatures and pressures. | |
| [Decomposition] Nitrogen oxides, carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide, nitrogen. | |
| [UN Number] 3261 | |
| [HS Code] 2942 00 00 |
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