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Stabilizers and polymer additives

Tempo

Also known as Tanane, Tanan, 2,2,6,6-Tetramethyl-1-piperidinyloxy

CAS 2564-83-2Formula C9H18NOMolar mass 156.25 g/molEC 219-888-8
GHS signal word: Danger. Pictograms: Corrosive 44 suppliers listed
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Tempo chemical structure, C9H18NO, CAS 2564-83-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2564-83-2
Formula
C9H18NO
Molar mass
156.25 g/mol
EC number
219-888-8
HS code
293339
Category
Stabilizers and polymer additives

What is Tempo?

Plain description, key identifiers and synonyms

TEMPO is a member of the class of aminoxyls that is piperidine that carries an oxidanediyl group at position 1 and methyl groups at positions 2, 2, 6, and 6, respectively. It has a role as a ferroptosis inhibitor, a catalyst and a radical scavenger. It is a member of piperidines and a member of aminoxyls.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
2564-83-2 CAS number cross-checked
EC number
219-888-8
Molecular formula
C9H18NO
UNII
VQN7359ICQ
MDL number
MFCD00009599
InChIKey
QYTDEUPAUMOIOP-UHFFFAOYSA-N
InChI
InChI=1S/C9H18NO/c1-8(2)6-5-7-9(3,4)10(8)11/h5-7H2,1-4H3
SMILES (canonical and isomeric)
CC1(CCCC(N1[O])(C)C)C

Synonyms

  • Tanane
  • Tanan
  • 2,2,6,6-Tetramethyl-1-piperidinyloxy
  • 2,2,6,6-Tetramethylpiperidine-1-oxyl
  • Tetramethylpiperidinooxy
  • Tetramethylpiperidine nitroxide
  • 1-Piperidinyloxy, 2,2,6,6-tetramethyl-
  • 2,2,6,6-tetramethyl-4-piperidine-N-oxide
  • 2,2,6,6-Tetramethylpiperidinooxy
  • 2,2,6,6-Tetramethylpiperidine 1-oxyl
  • (2,2,6,6-tetramethylpiperidin-1-yl)oxidanyl
  • Piperidinooxy, 2,2,6,6-tetramethyl-
  • 2,2,6,6-Tetramethyl piperidine-N-oxyl
  • (2,2,6,6-tetramethylpiperidin-1-yl)oxyl
  • 1-Piperidinyloxy, 2,2,6,6-tetramethyl- (9CI)
  • 2,2,6,6-Tetramethylpiperidinyloxy
  • 2,2,6,6-Tetramethylpiperidinooxyl
  • tempo, free radical
  • 1,1,5,5-Tetramethylpentamethylene nitroxide
  • TEMPO, 98%
  • TEMPO, purified by sublimation, 99%
  • 2,2,6,6-Tetramethylpiperidinooxy radical
  • 2,2,6,6-tetramethylpiperidin-1-yloxidanyl
  • 2,2,6,6-tetramethylpiperidinoxy free radical
  • 2,2,6,6-tetramethylpiperidinooxy, free radical
Show all 29 synonyms
  • 1-Piperidinyloxy,2,2,6,6-tetramethyl-,
  • 2,2,6,6-Tetramethylpentamethylene nitroxide
  • 2,2,6,6-Tetramethylpiperidine 1-oxyl, free radical
  • 4-Hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl-

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
156.25 g/molcalc.
Exact mass
156.1388 Dacalc.
LogP (octanol/water)
2.38calc.
Topological polar surface area
23.14 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
11calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1CCNCC1

C1CCNCC1

1 ring, 6 atoms, the Piperidine ring system.

32,085 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive

Hazard statements

  • H314Causes severe skin burns and eye damage.
  • H318Causes serious eye damage.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (15)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Tempo suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 44 suppliers
30 of 30 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

44 suppliers in 8 countries

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Tempo price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Pharmacological actions

  • Antioxidants

Roles

  • antioxidant
  • catalyst
  • ferroptosis inhibitor
  • radical scavenger

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce, Regulatory flags: Added by a premanufacture notice

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Tempo is traded under.

HS 2933.39Indicative HS code

Heterocyclic compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure…

World exports in 2024
$9.16B
−17.9% vs 2023, imports $10.6B
2019 to 2024
Top exporters
  1. China21.5%
  2. India * partner reported12.3%
  3. Ireland11.6%
Top importers
  1. Germany14.2%
  2. United States12.8%
  3. Brazil10.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Tempo is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Tempo, based on the data on this page

What is Tempo?

TEMPO is a member of the class of aminoxyls that is piperidine that carries an oxidanediyl group at position 1 and methyl groups at positions 2, 2, 6, and 6, respectively. It has a role as a ferroptosis inhibitor, a catalyst and a radical scavenger. It is a member of piperidines and a member of aminoxyls.

What is the CAS number of Tempo?

The CAS registry number of Tempo is 2564-83-2.

What is the molecular formula and weight of Tempo?

The molecular formula of Tempo is C9H18NO and its molar mass is 156.25 g/mol.

What is Tempo used for?

Known uses and roles of Tempo include uv absorbers and light stabilizers in paints and coatings, uv stabilizers in plastics and polymers, antioxidant, catalyst, ferroptosis inhibitor and 2 more.

Is Tempo hazardous?

Tempo carries the GHS signal word "Danger". Main hazards: causes severe skin burns and eye damage, causes serious eye damage, harmful to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Tempo?

Tempo is usually classified under HS code 293339 (Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Tempo?

CompoundList lists 44 suppliers of Tempo in China, United States, Japan, Germany and 4 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Tempo in India?

1 supplier in India list Tempo on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Tempo?

Suppliers quote Tempo on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Tempo

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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