Product Identification
【Product Name】2,2,6,6-Tetramethylpiperidine 1-oxyl 2,2,6,6-四甲基哌啶氧化物
【Synonyms】
2,2,6,6-Tetramethyl-1-oxylpiperidine TEMPO
2,2,6,6-Tetramethylpiperidin-1-oxy
2,2,6,6-Tetramethylpiperidine N-oxide
2,2,6,6-Tetramethylpiperidinooxy
2,2,6,6-Tetramethylpiperidinooxyl
2,2,6,6-Tetramethylpiperidinyl 1-oxide
【CAS】2564-83-2
【Formula】C9H18NO
【Molecular Weight】156.25
【EINECS】219-888-8
【RTECS】TN8991900
【RTECS Class】Primary Irritant
【Beilstein/Gmelin】1422418
【EC Class】corrosive
Physical and Chemical Properties
【Appearance】Red-orange solid.
【Solubility in water】9.7 g/L (20 C)
【Melting Point】36 - 39
【Vapor Pressure】3.0 (20 C)
【Density】0.912 g/cm3 (40 C)
【Usage】Catalyst for the oxidation of primary alcohols to aldehydes.
First Aid Measures
【Ingestion】Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
【Inhalation】Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
【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】Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Handling and Storage
【Storage】Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator (approx 4 C).
【Handling】Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Use with adequate ventilation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or flames.
Hazards Identification
【Inhalation】Causes respiratory tract irritation. Olfactory fatigue may occur. Can produce delayed pulmonary edema. Inhalation at high concentrations may cause CNS depression and asphixiation.
【Skin】May cause skin irritation and possible burns.
【Eyes】Causes eye irritation. May cause lacrimation (tearing), blurred vision, and photophobia. May cause chemical conjunctivitis and corneal damage.
【Ingestion】May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
【EC Risk Phrase】R 34
【EC Safety Phrase】S 26 36/37/39 45
【UN (DOT)】1759
Exposure Controls/Personal Protection
【Personal Protection】Eyes: Wear appropriate protective eyeglasses or chemical safety ggles 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】Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
【Exposure Effects】Effects may be delayed.
Fire Fighting Measures
【Flash Point】67
【Autoignition】275
【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. Dust can be an explosion hazard when exposed to heat or flame. Flammable solid. May burn rapidly with flare burning effect. May re-ignite after fire is extinguished. Runoff from fire control or dilution water may cause pollution. Extinguishing media: For large fires, use water spray, fog or regular foam. Contact professional fire-fighters immediately. For small fires, use dry chemical, carbon dioxide, sand, earth, water spray or regular foam. Cool containers with flooding quantities of water until well after fire is out.
Accidental Release Measures
【Small spills/leaks】Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation.
Stability and Reactivity
【Stability】Stable under normal temperatures and pressures.
【Incompatibilities】Strong oxidizing agents, strong acids.
【Decomposition】Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.
Transport Information
【UN Number】1759
【HS Code】2933 39 99