2,2,6,6-Tetramethylpiperidinooxy 2564-83-2 CAS NO.2564-83-2

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2,2,6,6-Tetramethylpiperidinooxy Basic information

Product Name:	2,2,6,6-Tetramethylpiperidinooxy
Synonyms:	2,2,6,6-Tetramethyl-1-piperinedinyloxy;TEMPO, FREE RADICAL;TEMPO;2,2,6,6-Tetramethyl-1-piperidyloxy;2,2,6,6-Tetramethylpiperidin-1-oxy;2,2',6,6'-Tetramethylpiperidin-1-oxyl;2,2,6,6-Tetramethylpiperidin-1-oxyl;2,2,6,6-Tetramethylpiperidine 1-oxide
CAS:	2564-83-2
MF:	C9H18NO*
MW:	156.25
EINECS:	219-888-8
Product Categories:	Spin Labels;Synthetic Organic Chemistry;Analytical Chemistry;Environmentally-friendly Oxidation;ESR Spectrometry;Fine Chemical;Oxidation;Redox Catalysts (Environmentally-friendly Oxidation)
Mol File:	2564-83-2.mol

2,2,6,6-Tetramethylpiperidinooxy Chemical Properties

Melting point	36-38 °C(lit.)
Boiling point	193°C
density	1 g/cm3
vapor pressure	0.4 hPa (20 °C)
refractive index	1.4350 (estimate)
Fp	154 °F
storage temp.	Store below +30°C.
solubility	9.7g/l
form	Powder
color	Yellow to green
PH	8.3 (9g/l, H2O, 20℃)
Water Solubility	Soluble in all organic solvents. Insoluble in water.
Merck	14,9140
BRN	1422418
Stability:	Stable. Incompatible with strong acids, strong oxidizing agents. Refrigerate.
InChIKey	RVWUHFFPEOKYLB-UHFFFAOYSA-N
CAS DataBase Reference	2564-83-2(CAS DataBase Reference)
NIST Chemistry Reference	1-Piperidinyloxy, 2,2,6,6-tetramethyl-(2564-83-2)
EPA Substance Registry System	1-Piperidinyloxy, 2,2,6,6-tetramethyl- (2564-83-2)

Safety Information

Hazard Codes	C,Xi
Risk Statements	34-36/37/38
Safety Statements	26-36/37/39-45-24/25
RIDADR	UN 3263 8/PG 2
WGK Germany	3
RTECS	TN8991900
Autoignition Temperature	275 °C
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	29333999

MSDS Information

Provider	Language
2,2,6,6-Tetramethylpiperidine 1-oxyl	English
SigmaAldrich	English
ACROS	English
ALFA	English

2,2,6,6-Tetramethylpiperidinooxy Usage And Synthesis

Chemical Properties	orange crystals or powder
Uses	TEMPO(2,2,6,6-Tetramethylpiperidinooxy) is a stable radical prepared through the oxidation of 2,2,6,6-tetramethylpiperidine. TEMPO has a wide range of applications including use as a free radical scavenger, a reagent in organic synthe sis and as a structural probe in electron spin resonance spectroscopy. TEMPO can also be used as a mediator in free radical polymerization.
Uses	In organic chemistry as a radical trap, 2,2,6,6-Tetramethylpiperidinooxy can be used as a catalyst and in polymerization mediation.
Uses	TEMPO can be used: As a catalytic oxidant for copper-catalyzed, greener oxidation of alcohols under aerobic conditions. As a catalytic oxidant in the iodobenzene diacetae oxidation of nerol to neral. For trapping the styrenyl radical generated from benzoyl peroxide during nitroxide-mediated radical polymerization of styrene. In the carboxylation of water-resistant nanofibrillated cellulose (NFC) films. Copper(I)/TEMPO-catalyzed aerobic oxidation of primary alcohols to aldehydes with ambient air
General Description	For a synthetic protocol using NMP initiators, contributed by Prof. Karen Wooley, please visit our technology spotlight.
Purification Methods	Purify TEMPO by sublimation (33o, water aspirator) [Hay & Fincke J Am Chem Soc 109 8012 1987, Keana Chem Rev 78 37 1978].

 

 

 

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