Bismuth Subcarbonate CAS 5892-10-4

FAQ - Technical & Supply Chain

• Q:

  Are Bismuth Subcarbonate and Basic Bismuth Carbonate the same commercial material?

  A: Both names commonly identify CAS 5892-10-4, also described as bismuth oxycarbonate. It is a basic oxycarbonate rather than a simple neutral bismuth carbonate. The purchase specification should state the CAS number, bismuth assay basis and offered grade.
• Q:

  What is Bismuth Subcarbonate used for?

  A: Bismuth subcarbonate is used in pigment, ceramic and selected formulation or industrial processes. Confirm suitability for the buyer's specific formulation or industrial process before procurement, because composition and particle-size requirements can differ.
• Q:

  Which batch specifications should be agreed for Bismuth Subcarbonate?

  A: Confirm bismuth content and reporting basis, loss on drying, chloride, sulfate, nitrate where relevant, arsenic, lead and other heavy metals, particle size and bulk density with the methods. Limits differ by ceramic, pigment or regulated use.
• Q:

  What physical form and packaging should be specified?

  A: Confirm particle-size needs, physical form and composition limits for the intended application. Select packaging compatible with the offered form and destination requirements, and state the bismuth assay and relevant impurity results needed for acceptance.
• Q:

  What appearance, density and typical bismuth content should be expected for Bismuth Subcarbonate?

  A: Bismuth subcarbonate CAS 5892-10-4, formula Bi2O2CO3 and molecular weight 509.98, is normally a white to off-white or pale-yellow powder with density about 6.86 g/cm3 at 25 C. Pharmacopoeial/analytical grades often quote bismuth content near 80-82.5% calculated on dried substance, so confirm the actual grade and reporting basis.