Calcium chloride with the molecular formula CaCl2 is an ionic combination of calcium and chlorine that is solid at room temperature and has a significant solubility in water. This material absorbs and retains water due to its hydrophilic properties. Calcium chloride is commonly used to cross-link alginate inks such as Alginate Solution or inks containing alginate such as 3DPL Skin A.

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Material type: Pellet form

Chemical formula: CaCl₂