DUOLITE™ AP143/1083 is an insoluble, strong basic, anion exchange resin suitable for pharmaceutical applications either as an active ingredient or as a carrier for acidic (anionic) drug substances.

Type Matrix
Strong Base Anion Macroreticular aromatic polymer

Guaranteed Sales Specification Units Cl- form
Particle size[2] microns 100% min. < 425
85% min. < 150
50% min. < 75
Loss on Drying [2] [3] % 12 max
Heavy metals [2] [3] % 0.002 max
Identity (by IR spectrum) [2] [3] - Identical to USP reference standard
pH of slurry [2] [3] - 4.0 - 6.0
Residue on ignition [2] [3] % 0.1 max
Dialysable Quaternary amine [2] [3] % 0.05
Trimethylamine [2] ppm 20
Chloride content [2] [3] % 13.0 - 17.0
Sodium glycocholate exchange capacity [2] [3] g/g 1.8 - 2.2
[1] The use of AMBERLITE and DUOLITE pharmaceutical grade ion exchange resins as components of drug formulations is subject to the Food, Drug and Cosmetic Act as amended.
[2] Contractual value
[3] Appears in current USP/NF