8.14681

2,2,6,6-Tetramethylpiperidine-1-oxyl (free radical)

for synthesis

• Synonym(s): 2,2,6,6-Tetramethylpiperidine-1-oxyl (free radical), Tempo
• Empirical Formula (Hill Notation): C₉H₁₈NO
• CAS Number: 2564-83-2
• Molecular Weight: 156.25
• MDL number: MFCD00009599
• EC Index Number: 219-888-8

Properties

• Quality Level: 200
• vapor pressure: 0.4 hPa ( 20 °C)
• assay: ≥98.0% (GC)
• form: powder
• autoignition temp.: 275 °C
• reaction suitability: reagent type: oxidant
• pH: 8.3 (20 °C, 9 g/L in H₂O)
• mp: 39-40 °C
• transition temp: flash point 67 °C
• solubility: 9.7 g/L
• density: 0.912 g/cm³ at 40 °C
• storage temp.: 2-30°C
• InChI: 1S/C9H18NO/c1-8(2)6-5-7-9(3,4)10(8)11/h5-7H2,1-4H3
• InChI key: QYTDEUPAUMOIOP-UHFFFAOYSA-N

Description

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Identity (IR): passes test
Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H314 - H412
• Precautionary Statements: P260 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1C
• Storage Class Code: 8A - Combustible, corrosive hazardous materials
• WGK: WGK 3
• Flash Point(F): 152.6 °F - closed cup
• Flash Point(C): 67 °C - closed cup