What is the pka of irganox 1010 and irgafos 168 antioxidants?

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Joseph Aondoaver Gbertyo

Gagandeep, I think this attached paper will serve.

Yurii V Geletii

Why not to google first ?

These antioxidants are not soluble in water.

Gagandeep Singh Brar

that's the first thing I did. I couldn't find anything on google. All I know is that Irganox 1010 has 4 hydroxyl groups. So, I was wondering if they would have a pka or not.

and also irganox 1010 has phenolic groups and phenol has a pka of around 9 or 10.

pKa of BHT (Butylated hydroxytoluene) is 12.3. No ideas about pKa of phenolic group on the surface of antioxidant. BHT is an antioxidant because of the weak O-H bond. No relationship with pKa.