ALCOA WORLD ALUMINA, LLC ALUMINUM FLUORIDE CHE 960 June 2003 Produced at Point Comfort, TX Operations Product Information Product Applications Packaging & Shipping Alcoa Aluminum fluoride (anhydrous) is an off-white, free-flowing granular material, insoluble in most organic and inorganic liquids at room temperatures. It is soluble in many fused salts. At ambient temperatures, it is chemically inactive. It is readily fluidized and can be transferred easily by pneumatic transport systems. Its crystalline structure is similar to that of alumina. At Alcoa’s Point Comfort Operations, it is produced from a reaction between alumina trihydrate and hydrogen fluoride gas. Aluminum fluoride is used by aluminum producers to lower the melting point of electrolytes in the smelting process and increase production efficiency. Bulk shipments available in railcar, barge or ship. Standard packaged product available in 50 and 100 pound bags, 25 kg bags, and super sacks. It is also used as a flux ingredient for the removal of magnesium in the refining of aluminum scrap. When magnesiumbearing aluminum alloys are melted, fluoride reacts with the magnesium and permits removal of this element. This enables remelters to produce aluminum alloys substantially free of magnesium. Physical Properties Aluminum fluoride is considered a non-toxic o chemical unless heated to above 932 F o (500 C) in the presence of moisture, at which time a pyrohydrolysis occurs with the evolution of hydrogen fluoride vapor, a respiratory irritant. For more details, refer to Alcoa Material Safety Data Sheet No. 148. The ceramic industry uses aluminum fluoride for some body and glaze mixtures and in the production of specialty refractory products. Aluminum fluoride is used in the manufacture of aluminum silicates and in the glass industry as a filler. Melting Point Specific Gravity Loose Bulk Density Solubility in H2O o o 2300 F (1260 C) 2.88 3 84 - 94 lb/ft 3 (1346 - 1506 kg/m ) Slightly soluble (0.56 g/100 ml) Typical Properties of Point Comfort Aluminum Fluoride Chemical Analysis, wt% SiO2 Fe2O3 Na2O AlF3 Free Al2O3 Al2(SO4)3 P2O5 LOI (0 - 480oC) Particle Size Analysis (cumulative) % on 100 mesh % on 200 mesh % on 325 mesh Typical Range(1) 0.15 - 0.35 0.005 - 0.015 0.16 - 0.22 90.00 - 94.00 4.00 - 8.00 0.4 - 0.7 0.005 - 0.015 0.15 - 0.80 1 70 95 - 15 95 100 Shipping Limits 0.400 max 0.020 max 0.25 max 90.00 min 10.00 max 0.8 max 0.030 max 1.20 max - (1) Approximately 2 Standard Deviations from Average. Alcoa World Alumina, LLC P. O. Box 101, Point Comfort, TX 77978-0101 800-562-2635 800-562-2640 Fax 877-987-7260 ISO 9002 Certified