Kodak has published the formula for Xtol as part of its patent 5853964. Kodak supplies Xtol quite inexpensively, which you will discover when you add up the prices of the individual components.(posted 8948 days ago)This is taken directly from the patent:
Part A (Dry Formulation) Sodium sulfite 10 g Diethylenetriaminepenta- 1 g acetic acid, pentasodium salt Sodium metaborate (8 mol) 4.0 g 4-Hydroxymethyl-4-methyl-1- 0.2 g phenyl-3-pyrazolidone
Part B (Dry Formulation): Sodium sulfite 75 g Sodium metabisulfite, 3.5 g Sodium isoascorbate 12 g ______________________________________