Rembrandt Ultra Pro made a Archival Safe - No PVC - Acid Free pages for Phone card collectors but they have discontinued it.
But there is another type of page phone card collectors use, Lighthouse Vario and and I quote from their add.
"Lighthouse unequivocally states that VARIO is:
100% SAFE for all philatelic use, banknotes and documents.
100% FREE of plasticized PVC*, stearates and softening agents*.
*(These chemical compounds are usually found in inferior plastic products. They may cause clouding by hydrogen chloride formation, fading and/or discoloration.)"

I bought a bunch of the Rembrandt pages when they dicontinued them and still use them.
I tried the Avery pages and thought they were horrible.

There are places on the web to buy the Vario pages and there is always at least one auction for them in the phone card section of eBay.