Honeywell Chemicals P.O. Box 1053, 101 Columbia Road Morristown, NJ 07962-1053 800-622-5002 973-455-6141 Fax TYPICAL ALKALINE MATERIALS (BASES) FOR NEUTRALIZATION OF HF ALKALINE MATERIAL COMMON NAMES FORM AVAILABLE HAZARDS + REACTION DOT Class 8 (Corrosive) Very High Heat of Dilution & Neutralization* DOT Class 8 (Corrosive) Very High Heat of Dilution & Neutralization* LB. / LB. 100% HF SODIUM HYDROXIDE (NaOH) CAUSTIC SODA 100% SOLID BEADS or FLAKE <50 % SOLUTION POTASSIUM HYDROXIDE (KOH) CAUSTIC POTASH 85% SOLID BEADS or FLAKE <45 % SOLUTION SODIUM CARBONATE (Na2CO3) SODA ASH DRY POWDER Rapid Evolution of Carbon Dioxide Gas (CO2) 2.85 lb. / lb. 100% HF SODIUM BICARBONATE (NaHCO3) BICARB BAKING SODA DRY POWDER 4.20 lb. / lb. 100% HF CALCIUM CARBONATE (CaCO3) LIMESTONE PEBBLES CALCIUM OXIDE (CaO) QUICKLIME DRY POWDER Rapid Evolution of Carbon Dioxide Gas (CO2) Slow Reaction Slow Evolution of Carbon Dioxide Gas (CO2) Pebble Surface Can Become Passivated DOT Class 8 (Corrosive) Very High Heat of Hydration & Neutralization* CALCIUM HYDROXIDE [Ca(OH)2] HYDRATED LIME DRY POWDER SLURRY IN WATER High Heat of Neutralization* Slippery When Wet 4.00 lb. / lb. 100% HF 6.23 lb. / lb. 100% HF SALT PROPERTIES Sodium Fluoride (NaF) DOT Class 6 (Poison) Sol. in Water = 4.0% Potassium Fluoride (KF) DOT Class 6 (Poison) Sol. in Water >40% Sodium Fluoride (NaF) DOT Class 6 (Poison) Sol. in Water = 4.0% Sodium Fluoride (NaF) DOT Class 6 (Poison) Sol. in Water = 4.0% 2.69 lb. / lb. 100% HF Calcium Fluoride (CaF2) Non-hazardous Sol. In Water = 0.004% 1.46 lb. / lb. 100% HF Calcium Fluoride (CaF2) Non-hazardous Sol. In Water = 0.004% 2.01 lb. / lb. 100% HF Calcium Fluoride (CaF2) Non-hazardous Sol. In Water = 0.004% * NOTE: To better control Heat of Neutralization, the HF Spill and Neutralizing Base should be diluted as much as practical, considering the need to control all effluents. WWW.Hfacid.com