MilliporeSigma
All Photos(1)

8.14681

Sigma-Aldrich

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:
Molecular Weight:
156.25
MDL number:
EC Index Number:
219-888-8

Quality Level

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

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.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

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

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Quality

Enter Lot Number to search for Certificate of Quality (COQ).

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service