Ammonium bifluoride (also known as ammonium hydrogen difluoride) is a white, crystalline solid having a density of 1.2 and deliquescent. Soluble in water and alcohols. It's uses include - ceramics, chemical reagent, etching glass, sterilizer for brewery, dairy and other equipment, electroplating, processing beryllium, and as a laundry sour. Packaged in a wide mouth polyethylene jar with screw cap.This material is shipped in compliance with USPS Publication 52 as an ORM-D. . Shipping .50.