What is the Ksp value for Titanium Phosphate and what form does
Titanium Phosphate exist in.

I would suggest that you try the Merck manual, which, unfortunately,
is not freely available online, but should be available in most
university libraries.

I just tried looking in the Merck Index, but it's not there. I tried
other chemical handbooks and references (including Scifinder Scholar,
which is supposed to be connected to ACS's CAS), but none seemed to
have a listing for Titanium Phosphate.

A search on web turned up a couple of results... Titanium Phosphate is
amorphous and exists in such forms as TiO(OH)(H2PO4)·2H20. It also
seems to be associated with ceramics.

Do you know what the chemical structure is of the form you want? I
know Titanium has possible oxidation states of +2, +3, +4.

Here are some numbers if you need to search the CAS database.

CAS Registry Number
# 17017-57-1

Related Registry Number
# 13772-30-0 (titanium(4+)-PO4[2:1])
# 15578-51-5 (titanium(4+)-PO4[4:3])