TEMPO
- Product Name
- TEMPO
- CAS No.
- 2564-83-2
- Chemical Name
- TEMPO
- Synonyms
- TEMPO;TEPO;2,2,6,6-TETRAMETHYL-1-PIPERIDINYLOXY;2,2,6,6-TETRAMETHYLPIPERIDINE 1-OXYL;2,2,6,6-Tetramethylpiperidin-1-oxyl;(2,2,6,6-Tetramethylpiperidin-1-yl)oxyl;2,2,6,6-TETRAMETHYLPIPERIDINE-N-OXYL;Tanane;Tanan;TEMPO,98%
- CBNumber
- CB6309451
- Molecular Formula
- C9H18NO*
- Formula Weight
- 156.25
- MOL File
- 2564-83-2.mol
TEMPO Property
- 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)
- Flash point:
- 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.
- InChI
- 1S/C9H18NO/c1-8(2)6-5-7-9(3,4)10(8)11/h5-7H2,1-4H3
- InChIKey
- RVWUHFFPEOKYLB-UHFFFAOYSA-N
- SMILES
- CC1(C)CCCC(C)(C)N1[O]
- 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
- 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
- TSCA listed
- HazardClass
- 8
- PackingGroup
- III
- HS Code
- 29333999
- Storage Class
- 8A - Combustible corrosive hazardous materials
- Hazard Classifications
- Aquatic Chronic 3
Eye Dam. 1
Skin Corr. 1C
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H314Causes severe skin burns and eye damage
H412Harmful to aquatic life with long lasting effects
- Precautionary statements
-
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- 214000
- Product name
- TEMPO
- Purity
- 98%
- Packaging
- 1g
- Price
- $29.1
- Updated
- 2025/07/31
- Product number
- 214000
- Product name
- TEMPO
- Purity
- 98%
- Packaging
- 5g
- Price
- $66.1
- Updated
- 2025/07/31
- Product number
- 8.14681
- Product name
- 2,2,6,6-Tetramethylpiperidine-1-oxyl (free radical)
- Purity
- for synthesis
- Packaging
- 5G
- Price
- $108
- Updated
- 2022/05/15
- Product number
- 8.14681
- Product name
- 2,2,6,6-Tetramethylpiperidine-1-oxyl (free radical)
- Purity
- for synthesis
- Packaging
- 25g
- Price
- $201
- Updated
- 2022/05/15
- Product number
- T1560
- Product name
- 2,2,6,6-Tetramethylpiperidine 1-Oxyl Free Radical
- Purity
- >98.0%(GC)(T)
- Packaging
- 5g
- Price
- $45
- Updated
- 2025/07/31
TEMPO Chemical Properties,Usage,Production
Description
2,2,6,6-Tetramethylpiperidine is a product that is used for the most diverse purposes because of its strong basicity, for example, as a light stabilizer for polyolefins, as a cocatalyst in olefin polymerizations (Ziegler catalysts), as a building block for the synthesis of pharmaceuticals and crop protection products, as a cocatalyst in the synthesis of dichloroacetyl chloride. The 4-unsubstituted 2.2.6,6-tetramethylpiperidine is generally prepared from the corresponding 4-oxo compound. It is known that triacetonamine can be converted by hydrazine to the hydrazone, which is then cleaved in the presence of alkali into 2,26,6-tetramethylpiperidine and nitrogen.
Chemical Properties
orange crystals or powder
Characteristics
2,2,6,6-Tetramethylpiperidinooxy(TEMPO) has the characteristics of high yield, good selectivity, good stability, and recyclable use.
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.
reaction suitability
reagent type: oxidant
Synthesis
(1) Take an appropriate amount of 2.2.6.6-tetramethylpiperidine, add catalyst and methanol and mix well, and the mass:mass:volume ratio of 2.2.6.6-tetramethylpiperidine to catalyst and methanol is (8 to 10):2:3;
(2) heat the mixture to 50 to 70??C (preferably 50-60??C), and dropwise add hydrogen peroxide to the reaction, and the dropwise addition amount of hydrogen peroxide is 2.2. 6.6-tetramethylpiperidine 6 to 7 times;
(3) the solution at the end of the reaction is filtered, the filtrate is extracted with propyl acetate, the propyl acetate phase is distilled to remove propyl acetate, and then cooled down and centrifuged to obtain 2,2,6,6-tetramethylpiperidine oxide.
Purification Methods
Purify TEMPO by sublimation (33o, water aspirator) [Hay & Fincke J Am Chem Soc 109 8012 1987, Keana Chem Rev 78 37 1978].
TEMPO Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from TEMPO manufacturers
- Product
- TEMPO;2,2,6,6-Tetramethyl-1-piperinedinyloxy 2564-83-2
- Price
- US $0.00/kg
- Min. Order
- 1kg
- Purity
- 99%min
- Supply Ability
- 20tons
- Release date
- 2025-10-21
- Product
- 2,2,6,6-Tetramethylpiperidinooxy 2564-83-2
- Price
- US $12.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 200mt/year
- Release date
- 2022-12-14
- Product
- TEMPO 2564-83-2
- Price
- US $0.00/Kg/Drum
- Min. Order
- 25KG
- Purity
- ≥98.5%
- Supply Ability
- 5tons
- Release date
- 2021-06-30