COBALTOUS CHLORIDE Chemical compatibility with O-rings, rubbers, & plastics

Cobaltous chloride, also called cobalt chloride or CoCl2, is a blue crystalline compound commonly used in specialty chemical production, humidity indicator formulations, and laboratory testing applications. While considered relatively low in toxicity, exposure can lead to skin and respiratory irritation. When used in equipment or processing systems, compatibility with O-rings, rubber seals, gaskets, and plastic components should be evaluated to reduce the risk of swelling or degradation. Appropriate storage, careful handling, and proper PPE are recommended to ensure safe use.

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