TAI is quite benign AFAIK, but I don't have the CAS # OTOMH and the IUPAC name escapes me right now. It is used in Europe at all film manufacturers and since Fotoimpex is now selling the DVDs, maybe you can get it through them. I'll look up the # here somewhere.

It was first patented by Birr of Agfa fame in the '30s.

PE