Technical Bulletins > CMA®

9/20/02 - Insolubles in Cryotech CMA® Solid Deicer

Customers making liquid CMA notice that not all CMA dissolves in water.

INSOLUBLES
The solid residue, usually about 1% by weight or less, comes from natural dolomite (dolomitic limestone is an upstream ingredient in CMA). These impurities are mostly silica and unreacted calcium and magnesium carbonates. Particle size is very small, so most insolubles pass through nozzles and filters without incident.

FIBROUS MATERIALS
Some customers have noticed fibrous materials. From time-to-time, we use oat grain to clean and lubricate production equipment instead of chemical solvents and oils. Small fragments of oats may be found in the finished product, which we expect to diminish over time as we continually improve our production processes.

IMPACT ON THE CUSTOMER
Neither residue is hazardous, nor will they affect product quality or performance. For customers making liquid CMA, there may be a need to check and clean filter media more often. Contamination of a batch can occur during the mixing process. For that reason a final filtering prior to loading is recommended. The final filter should be smaller than nozzle openings to catch any oversize or undissolved particles. Should you experience problems or have questions regarding filters, please contact Cryotech at (800)346-7237.