Calcium Chloride Dihydrate ACS Grade is an analytical reagent conforming to American Chemical Society purity standards. Supplied as white crystalline granules, it is highly soluble and hygroscopic, making it reliable for laboratory preparations, analytical procedures, buffer solutions, and research experiments. The controlled impurity limits and consistent composition ensure accuracy and repeatability in quantitative analysis, quality control testing, and educational laboratory work where ACS-grade reagents are specified.