Molekula
4-Amino-TEMPO (4-Amino-2,2,6,6-tetramethylpiperidinyloxy)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
4-Amino-TEMPO (4-Amino-2,2,6,6-tetramethylpiperidinyloxy) is a stable nitroxide radical widely used as a catalyst in oxidation reactions, a spin label in EPR spectroscopy, and a mediator in organic synthesis. It is a crystalline solid with high thermal stability and solubility in organic solvents. CAS 14691-88-4, molecular formula C9H19N2O, molecular weight 171.26 g/mol. Store at 2 to 8°C under inert gas to prevent decomposition. Signal word: Warning (irritant, may cause skin and eye irritation). Molekula supplies 4-Amino-TEMPO from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
1 g — £31.10 per pack ex VAT · £37.32 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Red crystalline powder |
| Melting Point | 143.0°C - 146.0°C |
| Ash | ≤0.10% |
| Identification | Conforms to reference |
| Purity | ≥ 98.0% |
| Moisture | ≤0.50% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Vapour Pressure | 0.00000547 mmHg |
Source: PubChem CID 550942 (Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 13805140 |
| CAS Number | 14691-88-4 |
| EC Number | 238-738-2 |
| Molecular Formula | C9H19N2O |
| Molecular Weight | 171.26 |
| Exact Mass | 171.1497 |
| SMILES | CC1(CC(CC(N1[O])(C)C)N)C |
| InChIKey | XUXUHDYTLNCYQQ-UHFFFAOYSA-N |
| InChI | InChI=1S/C9H19N2O/c1-8(2)5-7(10)6-9(3,4)11(8)12/h7H,5-6,10H2,1-4H3 |
| PubChem CID | 550942 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2933399990 |
| Tariff Code | 2933399990 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1-Piperidinyloxy, 4-amino-2,2,6,6-tetramethyl-
- 2,2,6,6-tetramethyl-4-aminopiperidine-1-oxyl
- 2,2,6,6-tetramethylpiperidine-N-oxyl-4-amine
- 4-Amino-2,2,6,6-tetramethyl-1-piperidinyloxy
- 4-amino-2,2,6,6-tetramethylpiperidin--1-oxyl
- 4-amino-2,2,6,6-tetramethylpiperidine oxide
- 4-Amino-2,2,6,6-tetramethylpiperidinooxyl
- 4-AmTEMPO
- A-TEMPO
- Tempamine
Frequently asked questions
What is 4-Amino-TEMPO used for?
4-Amino-TEMPO is commonly used as a stable free radical for organic synthesis, polymerization control, and as an oxidizing agent in various chemical reactions.
What is the chemical formula and molecular weight of 4-Amino-TEMPO?
The chemical formula is **C₉H₁₉N₂O**, and the molecular weight is **171.26 g/mol**.
How should 4-Amino-TEMPO be stored?
Store at **2–8°C** in a cool, dry place, protected from light and moisture. Follow standard chemical handling practices.
What grades or purities of 4-Amino-TEMPO does Molekula supply?
Molekula supplies **high-purity (97%+)** 4-Amino-TEMPO suitable for research and industrial applications.
Can Molekula supply 4-Amino-TEMPO in bulk quantities?
Yes, we offer bulk packaging options—please contact us for specific quantities and pricing.
What documentation comes with an order of 4-Amino-TEMPO?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.