Inhibitor 701, 4 Hydroxy Tempo

Chemical Name: 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

Synonyms: Inhibitor 701, TEMPO

CAS NO. :2226-96-2



Inhibitor 701 is a new type of free radical polymeric inhibitor with high efficiency and wide application. It has a good blocking effect under the condition of oxygen without oxygen.


The product is used to prevent polyolefin 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 in organic synthesis. 701 has good polymerization resistance to acrylate, methacrylate, acrylic acid, acrylonitrile, styrene, and butadiene.

Typical properties

Appearance Orange-red crystal

Purity ≥99%

Melting point 69-72 o C

Water content ≤0.5%

Ash ≤0.1%

Package & Storage

Package: 25kg carton inner with a plastic bag or as customer`s requirement. Storage: Keep container tightly closed in a dry and well-ventilated place. Avoid storage with other acidic

chemicals. Avoid damp, high temperature.


The use of proper protective equipment is recommended. Excess exposure to the product should be avoided. Wash thoroughly after handling. All safety information is provided in the Safety Data Sheet.