What are the differences between Crude Glycerin, Technical Grade Glycerin, and USP Grade Glycerin? Properties Crude Glycerin Technical Grade Glycerin 99.7 -USP Grade Glycerin Glycerol Content   40 – 88% 98.0 Min 99.70% Ash 2.0% Max N/A N/A Moisture Content N/A 2.0% … Continue reading Glycerin Specifications