4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy paramete

CAS No.: 2226-96-2
MF: C9H18NO2 *, C9H18NO2 *
Place of Origin: Shandong, China
Purity: 99%, 99%
Model Number: 11
Appearance: Dark Orange flakes, Dark Orange flakes
Color: Dark orange
Form: Flakes
EINECS: 218-761-4
Other Names: 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy
EINECS No.: 218-761-4
Type: Pharmaceutical Intermediates, Syntheses Material Intermediates
Brand Name: lookchemical
Application: Used a free radical scavenger
Product name: 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy CAS:2226-96-2
CAS: 2226-96-2
MW: 172.24
Other name: 1-Oxyl-2,2,6,6-tetramethyl-4-piperidinol


Item Specifications Results
Appearance Dark Orange flakes Conforms
Ash 0.10%max 0.05%
Assay(GC) 99.0%min 99.8%
Melting point 70.0~72.0℃ 70.3℃
Water content


Toluene insoluble 0.5% 0.30%

The results conforms with enterprise standards


1.The product has good polymerization resistance to acrylate, methacrylate, acrylate, acrylonitrile, styrene, butadiene. Its performance is better than that of phenols, aramines, ethers, quinones and nitro compounds.

2.Used as spin markers for biological compounds and polymers; Spin marker reagents can be used to identify the antagonist and agonist binding sites of NK1 receptor, and can also be used to determine the production of reactive oxygen species in myocardial tissue by electron spin resonance spectroscopy. TEMPOL protects cells overexpressing ChemicalbookCYP2E1 from arachidonic acid toxicity. As a fluoro-labeled derivative of TEMPO that can be prepared by derivating TEMPO propargyl ether and subsequent "click" reaction with fluazide; Used as a highly effective catalyst in oxidation of alcohols with bleach

3.To prevent olefin monomers from self-polymerization during production, separation, refining, storage or transportation, and to control and regulate the degree of polymerization of olefin and its derivatives

Product service

1. Certificate Of Analysis (COA)

2. Material Safety Data Sheet (MSDS)

3. Route of synthesis (ROS)

4. Method of Aanlysis (MOA)

5. Nuclear Magnetic Resonance (NMR)

6. Packing pictures and loading video before loading

7. Free Sample

8. Factory audit


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Q1: Do you accept sample order?
A:  We will make samples before mass production, and after sample approved, we'll begin mass production. Doing 100% inspection during production, then do random inspection before packing.
Q2:  What is our advantage?
A : The series of natural extracted product are all self-developed, produced and tested. Mature production technology, strict cost control, and perfect quality assurance system, ensure the product stability and competitive price.
Q3: What’s your MOQ?
A :  Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q4: Do you supply product report?
A : Yes. We'll give you product analysis report before shipping.
 Q5: Is there a discount?
A :  Different quantity has different discount.
Q6: Can we visit your factory?
A :  Yes. Welcome to visit.
Q7: How to confirm the Product Quality before placing orders?
A :  You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.


H302 (98.77%): Harmful if swallowed [Warning Acute toxicity, oral]

H315 (31.38%): Causes skin irritation [Warning Skin corrosion/irritation]

H318 (57.85%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

H319 (40.62%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

H335 (30.46%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

H373 (14.46%): Causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]

H412 (11.38%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]




1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.


25kg/bag or 25kg/drum, or as your requirements.

Packing can be conducted according to customers' requirements.

Delivery detail

   [Delivery] 5 working days after payment.

4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy picture

Packaging and shipping

Honor Certificate

Professional team