Principal Applications

  • Calcium Polystyrene Sulfonate

Regulatory Approvals

  • British and Japanese Pharmacopeia Compliant

Typical Packaging

  • Small drum (Fiber)

Typical Physical & Chemical Characteristics:

Polymer Structure Polystyrene crosslinked with divinylbenzene
Appearance Cream to light brown, fine powder
Functional Group Sulfonic Acid
Ionic Form Ca++ 
pH in DI water 6 - 9.5
Microbial: Bile-tolerant Gram-negative bacteria (max.) 100 cfu/g
Assay for calcium 6.5 - 9.5 % dry basis
Particle Size retained on a 150 µm sieve (max.) 0.01 %
Loss on drying (max.) 7 %
Potassium Exchange Capacity 1.3 - 2 meq/g - dry
Residual Iron (max.) 100 ppm
Residual lead (max.) 10 ppm
Residual Potassium (max.) 0.1 ppm
Residual sodium (max.) 0.1 %
Residual styrene (max.) 1 ppm