Chemical Name                            tert-Amyl hydroperoxide

CAS NO.                                        3425-61-4           

Brand Name                                  XJ-TAHP85

Molecular Weight                        104.1

Molecular Formula                       C₅H₁₂O₂    

EINECS                                      222-321-7                                     

Assay / physical form               85% solution in water  

Reactive Oxygen Content         appx.  13.05 % 

Application 

TAHP, tert-Amyl hydroperoxide, is a widely used initiator for free radical reactions, valued for its stability and ease of handling. Unlike other initiators, it doesn't require freezing and can be stored safely at temperatures below 50°C for up to three months without losing effectiveness. This makes it especially convenient for industrial use. 

TAHP is often preferred in applications like emulsion polymerization, aqueous-phase polymerization, curing, and graft polymerization due to its performance advantages over alternatives like persulfates, cumene hydroperoxide, and benzoyl peroxide. 

One notable benefit of TAHP is that its decomposition results in tert-amyl alcohol and small amounts of acetone, which are non-corrosive and cause less wear on equipment, unlike other initiators that often produce acidic by-products.

TAHP is used as a polymerization initiator in the production of styrene and its copolymers, such as SAN and ABS. 

It is also widely used in the polymerization of acrylic and methacrylic compounds, as well as vinyl chloride. 

Beyond its industrial uses, TAHP is an intermediate in organic synthesis, frequently applied in pharmaceutical manufacturing.

XJ-TAHP85 is equivalent is Nouryon Trigonox TAHP-W85.