Calcium Chloride (CaCl₂)

Keep packaged solids tightly sealed and protected from humidity; once packaging is compromised, calcium chloride can absorb enough water to cake or liquefy. For liquid storage, select materials using the supplier’s compatibility guidance. OxyChem specifically cautions that common stainless steels may suffer chloride stress cracking in concentrated calcium chloride service and recommends appropriately lined carbon steel or suitable non-metallic systems for certain services.
HSE control principle
Use the current product-specific SDS, local dangerous-goods requirements, receiving-site risk assessment and applicable engineering standards. Website text should never substitute for a supplier SDS or site procedure.

A technically meaningful RFQ should define the key quality parameters that control calcium chloride performance in the intended application. Typical COA requirements include CaCl₂ assay, magnesium/alkali chlorides, water-insoluble matter, particle size, moisture or hydration state, solution density/specific gravity, and solution pH. CaCl₂ assay is typically determined by titrimetric or supplier methods and serves as the primary grade discriminator. Mg/alkali chlorides and water-insoluble matter are controlled through supplier or ASTM methods to manage impurities and brine cleanliness. Particle size is commonly assessed by sieve analysis because it affects handling and dissolution rate, while moisture/hydration state influences flowability and active content. For prepared brines, solution density/specific gravity is used to verify concentration, and pH is checked at a defined concentration to confirm process compatibility. Where applicable, acceptance should also consider relevant standards such as ASTM D98, AASHTO M144, or FCC requirements. Final COA and test requirements should match the producer specification, customer standard, and intended application.