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Crystal Stable Dyestuff Industry 4-Hydroxy-Tempo

Crystal Stable Dyestuff Industry 4-Hydroxy-Tempo
Basic Information


4-Hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl,TEMPOL;

2,2,6,6-Tetramethyl-4-hydroxy-1-piperidinyloxy radical;

4-Hydroxy-2,2,6,6-Tetramethyl-piperidinyloxy ;



4-Hydroxy-TEMPO free radical;

CAS No. 2226-96-2
EINECS 218-760-9
Formula C9H18NO2


Molecular Weight 172.24
Storage temp 2-8°C
PH 8.2 (20g/l, H2O, 20℃)
Boiling Point 302.58°C
BRN  1422990

Specification of Product
Appearance Orange Crystal
Purity min. 99.0%
Moisture max. 0.5%
Ash max. 0.1%

Safety Information
Hazard Codes   C, Xi
WGK Germanys  1
RTECS TN8991000
Risk Statements  22-36/37/38-36/38
HS Code  29333999

Supply Ability
100 Tons per Month, and our standing inventory is 20-30 tons.
Package and Delivery

fibre drum for 4-Hydroxy-TEMPO

Regular packaging: 25kgs/ 50L fibre drum

If you have any special package requirements, please tell us.


Q: Can you provide samples of your products?

A: Yes. Please get in touch with our marketing office for samples.

Q: What's the MOQ of  4-Hydroxy-TEMPO?

A: There is no MOQ of 4-Hydroxy-TEMPO, any quantity can be provided.


 In biochemical research, 4-Hydroxy-TEMPO Free Radical has been investigated as an agent for limiting reactive oxygen species. It catalyzes the disproportionation of superoxide, facilitates hydrogen peroxide metabolism, and inhibits Fenton chemistry.

Why Choose Us


We have many years of experience in the production of  4-Hydroxy-TEMPO, and  4-Hydroxy-TEMPO is our so competitive product.

Our production is 600-800 tons per year. And our standing inventory is 20-30 tons.

Better payment term   

We can accept T/T and LC at sight for the fist cooperation . We also can supply more payment terms for our regular customers.

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