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Potassium dichromate

K2Cr2O7 Poisonous, yellowish-red crystals with metallic taste; soluble in water, insoluble in alcohol; melts at 396_C, decomposes at 500_C; used as an oxidising agent and analytical reagent, and in explosives, matches, and electroplating. Also known as potassium bichromate; red potassium chromate.

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