Pure Lye Drain Cleaner / Opener, 2 lbs. Food Grade Sodium Hydroxide Micro Beads Food Grade Sodium hydroxide Lye Micro Beads Great for Pretzel, Bagel, and soap making HDPE Plastic Container keeps product dry in garage. Auto Cleaning Product - Must be used with caution Perfect for Bio Diesel Generation 21 CFR 172.892 (Food Starch-Modified, modified up to 1%), 21 CFR173.310 (Boiler Water Additive), 21 CFR 177.1600 (Polyethylene Resins, Carboxyl Modified). <span class="a-text-bold">Soap and Detergent</span> - saponifies fats into water-soluble sodium soaps. <span class="a-text-bold">Food and Dairy</span> - used in various food processing methods which includes washing and chemical peeling of fruits and vegetables, poultry, soft drink, chocolate processing, cocoa processing, and thickening ice cream. <span class="a-text-bold">Metal Cleaning</span> - clean metals by saponifying surface oils to create a thin soapy layer, etches the surface of certain types of metals, important preparatory step in many welding or painting applications. <span class="a-text-bold">Textile Treatment</span> - aid in scouring, bleaching and neutralizing during textile processing. <span class="a-text-bold">General and Industrial Cleaning</span> - strong base used as an alkali source in cleaning agents. As such, it can dissolve grease, oils, fats and protein based deposits. Used also, for example, to clean and prepare sheet steel in galvanizing plants as well as being a chief ingredient for drain pipe cleaners. <span class="a-text-bold">Biodiesel and Bioethanol</span> - catalyst for the transesterification of methanol and triglycerides as well as for pH adjustment and formation of in situ sodium methylate to prevent the formation of soap due to the presence of water. <span class="a-text-bold">Chemical Production</span> - as a reactive intermediate and catalyst in chemical production as well as in chemical processing plants for scrubbing and drying. <span class="a-text-bold">General Industrial</span> - in the manufacture of products ranging from glue, gelatin, grease, and cosmetics to dry batteries, agricultural products, paint, and varnish removers. <span class="a-text-bold">Petroleum Exploration</span> - treating agent in oil well drilling fluids to increase viscosity which prevents heavier materials from settling. Boiling Point:  2534F (1390C) Melting Point (crystallization begins):  590-608F (310- 320C) Specific Gravity:  2.13 Bulk Density:  Compacted 73 lb/ft3, Loose 70 lb/ft3 pH at 20C:  Strongly Basic Solubility in Water:  42 g/100 g water at 0C (32F), 347 g/100 g water at 100C (212F) Solution Rate:  Twice as fast as flake Refractive Index:  1.3576 Particle Shape:  Spherical, evenly sized Friability:  Very Low as well as Very Low Dust an electrolyte an efficient catalyst a cleaner cell bath more homogeneous gas mix dissolves grease, oils, fats and protein based deposits. as such it is fabulous for grease traps and hoods in kitchens. saponifies surface oils to create a thin soapy layer etches the surface of certain types of metals the etching capabilities make lye an important preparatory step in many welding or painting applications. can strip paint Use caution when purchasing drain openers from other suppliers. Most drain openers contain other chemicals in addition to the lye. Essential Depot&#039;s lye does not contain other chemicals. Those other added chemicals are very undesirable and potentially harmful.