Chromic Acid (Dichromic Acid, Chromium Trioxide) is most known for its use in the metal finishing (intermediate in chromium plating) industry. Other common uses are as a wood preservative, production of plastic products, ceramic glazes and to clean laboratory glassware
fatal oral dose of chromium has been reported to be 1 to 3 grams.
CHROMIUM TRIOXIDE CHROMIC ACID